Merge remote-tracking branch 'upstream/master'

2018-03-14 12:45:23 +01:00
parent aee599b5f5 510ad19f90
commit 2d11766b50
535 changed files with 7319 additions and 4817 deletions
@@ -16,3 +16,4 @@
 - [Introduction to Minimax Algorithm](http://www.baeldung.com/java-minimax-algorithm)
 - [How to Calculate Levenshtein Distance in Java?](http://www.baeldung.com/java-levenshtein-distance)
 - [How to Find the Kth Largest Element in Java](http://www.baeldung.com/java-kth-largest-element)
+- [Multi-Swarm Optimization Algorithm in Java](http://www.baeldung.com/java-multi-swarm-algorithm)
@@ -9,6 +9,7 @@
        <exec-maven-plugin.version>1.5.0</exec-maven-plugin.version>
        <lombok.version>1.16.12</lombok.version>
        <commons-math3.version>3.6.1</commons-math3.version>
+        <tradukisto.version>1.0.1</tradukisto.version>
    </properties>

    <parent>
@@ -39,6 +40,11 @@
            <artifactId>jgrapht-core</artifactId>
            <version>1.0.1</version>
        </dependency>
+        <dependency>
+            <groupId>pl.allegro.finance</groupId>
+            <artifactId>tradukisto</artifactId>
+            <version>${tradukisto.version}</version>
+        </dependency>
        <dependency>
            <groupId>org.assertj</groupId>
            <artifactId>assertj-core</artifactId>
@@ -46,7 +52,6 @@
            <scope>test</scope>
        </dependency>
    </dependencies>
-
    <build>
        <pluginManagement>
            <plugins>
@@ -77,4 +82,4 @@
            </plugin>
        </plugins>
    </reporting>
-</project>
+</project>
@@ -0,0 +1,75 @@
+package com.baeldung.algorithms.numberwordconverter;
+
+import java.math.BigDecimal;
+
+import pl.allegro.finance.tradukisto.MoneyConverters;
+
+public class NumberWordConverter {
+
+    public static final String INVALID_INPUT_GIVEN = "Invalid input given";
+
+    public static final String[] ones = { "", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "ten", "eleven", "twelve", "thirteen", "fourteen", "fifteen", "sixteen", "seventeen", "eighteen", "nineteen" };
+
+    public static final String[] tens = {
+      "", // 0
+      "", // 1
+      "twenty", // 2
+      "thirty", // 3
+      "forty", // 4
+      "fifty", // 5
+      "sixty", // 6
+      "seventy", // 7
+      "eighty", // 8
+      "ninety" // 9
+    };
+
+    public static String getMoneyIntoWords(String input) {
+        MoneyConverters converter = MoneyConverters.ENGLISH_BANKING_MONEY_VALUE;
+        return converter.asWords(new BigDecimal(input));
+    }
+
+    public static String getMoneyIntoWords(final double money) {
+        long dollar = (long) money;
+        long cents = Math.round((money - dollar) * 100);
+        if (money == 0D) {
+            return "";
+        }
+        if (money < 0) {
+            return INVALID_INPUT_GIVEN;
+        }
+        String dollarPart = "";
+        if (dollar > 0) {
+            dollarPart = convert(dollar) + " dollar" + (dollar == 1 ? "" : "s");
+        }
+        String centsPart = "";
+        if (cents > 0) {
+            if (dollarPart.length() > 0) {
+                centsPart = " and ";
+            }
+            centsPart += convert(cents) + " cent" + (cents == 1 ? "" : "s");
+        }
+        return dollarPart + centsPart;
+    }
+
+    private static String convert(final long n) {
+        if (n < 0) {
+            return INVALID_INPUT_GIVEN;
+        }
+        if (n < 20) {
+            return ones[(int) n];
+        }
+        if (n < 100) {
+            return tens[(int) n / 10] + ((n % 10 != 0) ? " " : "") + ones[(int) n % 10];
+        }
+        if (n < 1000) {
+            return ones[(int) n / 100] + " hundred" + ((n % 100 != 0) ? " " : "") + convert(n % 100);
+        }
+        if (n < 1_000_000) {
+            return convert(n / 1000) + " thousand" + ((n % 1000 != 0) ? " " : "") + convert(n % 1000);
+        }
+        if (n < 1_000_000_000) {
+            return convert(n / 1_000_000) + " million" + ((n % 1_000_000 != 0) ? " " : "") + convert(n % 1_000_000);
+        }
+        return convert(n / 1_000_000_000) + " billion" + ((n % 1_000_000_000 != 0) ? " " : "") + convert(n % 1_000_000_000);
+    }
+}
@@ -0,0 +1,84 @@
+package com.baeldung.algorithms.moneywords;
+
+import static org.junit.Assert.assertEquals;
+
+import org.junit.Test;
+
+import com.baeldung.algorithms.numberwordconverter.NumberWordConverter;
+
+public class NumberWordConverterTest {
+
+    @Test
+    public void whenMoneyNegative_thenReturnInvalidInput() {
+        assertEquals(NumberWordConverter.INVALID_INPUT_GIVEN, NumberWordConverter.getMoneyIntoWords(-13));
+    }
+
+    @Test
+    public void whenZeroDollarsGiven_thenReturnEmptyString() {
+        assertEquals("", NumberWordConverter.getMoneyIntoWords(0));
+    }
+
+    @Test
+    public void whenOnlyDollarsGiven_thenReturnWords() {
+        assertEquals("one dollar", NumberWordConverter.getMoneyIntoWords(1));
+    }
+
+    @Test
+    public void whenOnlyCentsGiven_thenReturnWords() {
+        assertEquals("sixty cents", NumberWordConverter.getMoneyIntoWords(0.6));
+    }
+    
+    @Test
+    public void whenAlmostAMillioDollarsGiven_thenReturnWords() {
+        String expectedResult = "nine hundred ninety nine thousand nine hundred ninety nine dollars";
+        assertEquals(expectedResult, NumberWordConverter.getMoneyIntoWords(999_999));
+    }
+    
+    @Test
+    public void whenThirtyMillionDollarsGiven_thenReturnWords() {
+        String expectedResult = "thirty three million three hundred forty eight thousand nine hundred seventy eight dollars";
+        assertEquals(expectedResult, NumberWordConverter.getMoneyIntoWords(33_348_978));
+    }
+    
+    @Test
+    public void whenTwoBillionDollarsGiven_thenReturnWords() {
+        String expectedResult = "two billion one hundred thirty three million two hundred forty seven thousand eight hundred ten dollars";
+        assertEquals(expectedResult, NumberWordConverter.getMoneyIntoWords(2_133_247_810));
+    }
+
+    @Test
+    public void whenGivenDollarsAndCents_thenReturnWords() {
+        String expectedResult = "nine hundred twenty four dollars and sixty cents";
+        assertEquals(expectedResult, NumberWordConverter.getMoneyIntoWords(924.6));
+    }
+
+    @Test
+    public void whenOneDollarAndNoCents_thenReturnDollarSingular() {
+        assertEquals("one dollar", NumberWordConverter.getMoneyIntoWords(1));
+    }
+
+    @Test
+    public void whenNoDollarsAndOneCent_thenReturnCentSingular() {
+        assertEquals("one cent", NumberWordConverter.getMoneyIntoWords(0.01));
+    }
+
+    @Test
+    public void whenNoDollarsAndTwoCents_thenReturnCentsPlural() {
+        assertEquals("two cents", NumberWordConverter.getMoneyIntoWords(0.02));
+    }
+
+    @Test
+    public void whenNoDollarsAndNinetyNineCents_thenReturnWords() {
+        assertEquals("ninety nine cents", NumberWordConverter.getMoneyIntoWords(0.99));
+    }
+
+    @Test
+    public void whenNoDollarsAndNineFiveNineCents_thenCorrectRounding() {
+        assertEquals("ninety six cents", NumberWordConverter.getMoneyIntoWords(0.959));
+    }
+
+    @Test
+    public void whenGivenDollarsAndCents_thenReturnWordsVersionTwo() {
+        assertEquals("three hundred ten £ 00/100", NumberWordConverter.getMoneyIntoWords("310"));
+    }
+}
@@ -0,0 +1,76 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+	<artifactId>apache-curator</artifactId>
+	<version>0.0.1-SNAPSHOT</version>
+	<packaging>jar</packaging>
+    
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>parent-modules</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
+    </parent>
+    
+    <properties>
+        <curator.version>4.0.1</curator.version>
+        <zookeeper.version>3.4.11</zookeeper.version>
+        <jackson-databind.version>2.9.4</jackson-databind.version>
+
+        <!-- testing -->
+        <assertj.version>3.6.1</assertj.version>
+        <avaitility.version>1.7.0</avaitility.version>
+
+    </properties>
+
+	<dependencies>
+    
+        <!-- curator -->
+        
+        <dependency>
+            <groupId>org.apache.curator</groupId>
+            <artifactId>curator-x-async</artifactId>
+            <version>${curator.version}</version>
+            <exclusions>
+                <exclusion>
+                    <groupId>org.apache.zookeeper</groupId>
+                    <artifactId>zookeeper</artifactId>
+                </exclusion>
+            </exclusions>
+        </dependency>
+        
+        <dependency>
+            <groupId>org.apache.curator</groupId>
+            <artifactId>curator-recipes</artifactId>
+            <version>${curator.version}</version>
+        </dependency>
+        
+        <dependency>
+            <groupId>org.apache.zookeeper</groupId>
+            <artifactId>zookeeper</artifactId>
+            <version>${zookeeper.version}</version>
+        </dependency>
+        
+        <!-- utils -->
+        <dependency>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-databind</artifactId>
+            <version>${jackson-databind.version}</version>
+        </dependency>
+        
+        <!-- test scoped -->
+
+        <dependency>
+            <groupId>org.assertj</groupId>
+            <artifactId>assertj-core</artifactId>
+            <version>${assertj.version}</version>
+            <scope>test</scope>
+        </dependency>
+        
+        <dependency>
+            <groupId>com.jayway.awaitility</groupId>
+            <artifactId>awaitility</artifactId>
+            <version>${avaitility.version}</version>
+            <scope>test</scope>
+        </dependency>
+	</dependencies>
+</project>
@@ -0,0 +1,31 @@
+package com.baeldung.apache.curator.modeled;
+
+public class HostConfig {
+    private String hostname;
+    private int port;
+
+    public HostConfig() {
+
+    }
+
+    public HostConfig(String hostname, int port) {
+        this.hostname = hostname;
+        this.port = port;
+    }
+
+    public int getPort() {
+        return port;
+    }
+
+    public void setPort(int port) {
+        this.port = port;
+    }
+
+    public String getHostname() {
+        return hostname;
+    }
+
+    public void setHostname(String hostname) {
+        this.hostname = hostname;
+    }
+}
@@ -0,0 +1,22 @@
+package com.baeldung.apache.curator;
+
+import org.apache.curator.RetryPolicy;
+import org.apache.curator.framework.CuratorFramework;
+import org.apache.curator.framework.CuratorFrameworkFactory;
+import org.apache.curator.retry.RetryNTimes;
+import org.junit.Before;
+
+public abstract class BaseTest {
+
+    @Before
+    public void setup() {
+        org.apache.log4j.BasicConfigurator.configure();
+    }
+
+    protected CuratorFramework newClient() {
+        int sleepMsBetweenRetries = 100;
+        int maxRetries = 3;
+        RetryPolicy retryPolicy = new RetryNTimes(maxRetries, sleepMsBetweenRetries);
+        return CuratorFrameworkFactory.newClient("127.0.0.1:2181", retryPolicy);
+    }
+}
@@ -0,0 +1,89 @@
+package com.baeldung.apache.curator.configuration;
+
+import static com.jayway.awaitility.Awaitility.await;
+import static org.assertj.core.api.Assertions.assertThat;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.UUID;
+import java.util.concurrent.atomic.AtomicBoolean;
+
+import org.apache.curator.framework.CuratorFramework;
+import org.apache.curator.x.async.AsyncCuratorFramework;
+import org.junit.Test;
+
+import com.baeldung.apache.curator.BaseTest;
+
+public class ConfigurationManagementManualTest extends BaseTest {
+
+    private static final String KEY_FORMAT = "/%s";
+
+    @Test
+    public void givenPath_whenCreateKey_thenValueIsStored() throws Exception {
+        try (CuratorFramework client = newClient()) {
+            client.start();
+            AsyncCuratorFramework async = AsyncCuratorFramework.wrap(client);
+            String key = getKey();
+            String expected = "my_value";
+
+            // Create key nodes structure
+            client.create()
+                .forPath(key);
+
+            // Set data value for our key
+            async.setData()
+                .forPath(key, expected.getBytes());
+
+            // Get data value
+            AtomicBoolean isEquals = new AtomicBoolean();
+            async.getData()
+                .forPath(key)
+                .thenAccept(
+                    data -> isEquals.set(new String(data).equals(expected)));
+
+            await().until(() -> assertThat(isEquals.get()).isTrue());
+        }
+    }
+
+    @Test
+    public void givenPath_whenWatchAKeyAndStoreAValue_thenWatcherIsTriggered()
+        throws Exception {
+        try (CuratorFramework client = newClient()) {
+            client.start();
+            AsyncCuratorFramework async = AsyncCuratorFramework.wrap(client);
+            String key = getKey();
+            String expected = "my_value";
+
+            // Create key structure
+            async.create()
+                .forPath(key);
+
+            List<String> changes = new ArrayList<>();
+
+            // Watch data value
+            async.watched()
+                .getData()
+                .forPath(key)
+                .event()
+                .thenAccept(watchedEvent -> {
+                    try {
+                        changes.add(new String(client.getData()
+                            .forPath(watchedEvent.getPath())));
+                    } catch (Exception e) {
+                        // fail ...
+                    }
+                });
+
+            // Set data value for our key
+            async.setData()
+                .forPath(key, expected.getBytes());
+
+            await().until(() -> assertThat(changes.size() > 0).isTrue());
+        }
+    }
+
+    private String getKey() {
+        return String.format(KEY_FORMAT, UUID.randomUUID()
+            .toString());
+    }
+}
@@ -0,0 +1,79 @@
+package com.baeldung.apache.curator.connection;
+
+import static com.jayway.awaitility.Awaitility.await;
+import static org.assertj.core.api.Assertions.assertThat;
+
+import java.util.concurrent.atomic.AtomicBoolean;
+
+import org.apache.curator.RetryPolicy;
+import org.apache.curator.framework.CuratorFramework;
+import org.apache.curator.framework.CuratorFrameworkFactory;
+import org.apache.curator.retry.RetryNTimes;
+import org.apache.curator.x.async.AsyncCuratorFramework;
+import org.junit.Test;
+
+public class ConnectionManagementManualTest {
+
+    @Test
+    public void givenRunningZookeeper_whenOpenConnection_thenClientIsOpened()
+        throws Exception {
+        int sleepMsBetweenRetries = 100;
+        int maxRetries = 3;
+        RetryPolicy retryPolicy = new RetryNTimes(maxRetries,
+            sleepMsBetweenRetries);
+
+        try (CuratorFramework client = CuratorFrameworkFactory
+            .newClient("127.0.0.1:2181", retryPolicy)) {
+            client.start();
+
+            assertThat(client.checkExists()
+                .forPath("/")).isNotNull();
+        }
+    }
+
+    @Test
+    public void givenRunningZookeeper_whenOpenConnectionUsingAsyncNotBlocking_thenClientIsOpened()
+        throws InterruptedException {
+        int sleepMsBetweenRetries = 100;
+        int maxRetries = 3;
+        RetryPolicy retryPolicy = new RetryNTimes(maxRetries,
+            sleepMsBetweenRetries);
+
+        try (CuratorFramework client = CuratorFrameworkFactory
+            .newClient("127.0.0.1:2181", retryPolicy)) {
+            client.start();
+            AsyncCuratorFramework async = AsyncCuratorFramework.wrap(client);
+
+            AtomicBoolean exists = new AtomicBoolean(false);
+
+            async.checkExists()
+                .forPath("/")
+                .thenAcceptAsync(s -> exists.set(s != null));
+
+            await().until(() -> assertThat(exists.get()).isTrue());
+        }
+    }
+
+    @Test
+    public void givenRunningZookeeper_whenOpenConnectionUsingAsyncBlocking_thenClientIsOpened()
+        throws InterruptedException {
+        int sleepMsBetweenRetries = 100;
+        int maxRetries = 3;
+        RetryPolicy retryPolicy = new RetryNTimes(maxRetries,
+            sleepMsBetweenRetries);
+
+        try (CuratorFramework client = CuratorFrameworkFactory
+            .newClient("127.0.0.1:2181", retryPolicy)) {
+            client.start();
+            AsyncCuratorFramework async = AsyncCuratorFramework.wrap(client);
+
+            AtomicBoolean exists = new AtomicBoolean(false);
+
+            async.checkExists()
+                .forPath("/")
+                .thenAccept(s -> exists.set(s != null));
+
+            await().until(() -> assertThat(exists.get()).isTrue());
+        }
+    }
+}
@@ -0,0 +1,49 @@
+package com.baeldung.apache.curator.modeled;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.fail;
+
+import org.apache.curator.framework.CuratorFramework;
+import org.apache.curator.x.async.AsyncCuratorFramework;
+import org.apache.curator.x.async.modeled.JacksonModelSerializer;
+import org.apache.curator.x.async.modeled.ModelSpec;
+import org.apache.curator.x.async.modeled.ModeledFramework;
+import org.apache.curator.x.async.modeled.ZPath;
+import org.junit.Test;
+
+import com.baeldung.apache.curator.BaseTest;
+
+public class ModelTypedExamplesManualTest extends BaseTest {
+
+    @Test
+    public void givenPath_whenStoreAModel_thenNodesAreCreated()
+        throws InterruptedException {
+
+        ModelSpec<HostConfig> mySpec = ModelSpec
+            .builder(ZPath.parseWithIds("/config/dev"),
+                JacksonModelSerializer.build(HostConfig.class))
+            .build();
+
+        try (CuratorFramework client = newClient()) {
+            client.start();
+            AsyncCuratorFramework async = AsyncCuratorFramework.wrap(client);
+            ModeledFramework<HostConfig> modeledClient = ModeledFramework
+                .wrap(async, mySpec);
+
+            modeledClient.set(new HostConfig("host-name", 8080));
+
+            modeledClient.read()
+                .whenComplete((value, e) -> {
+                    if (e != null) {
+                        fail("Cannot read host config", e);
+                    } else {
+                        assertThat(value).isNotNull();
+                        assertThat(value.getHostname()).isEqualTo("host-name");
+                        assertThat(value.getPort()).isEqualTo(8080);
+                    }
+
+                });
+        }
+
+    }
+}
@@ -0,0 +1,74 @@
+package com.baeldung.apache.curator.recipes;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import org.apache.curator.framework.CuratorFramework;
+import org.apache.curator.framework.recipes.leader.LeaderSelector;
+import org.apache.curator.framework.recipes.leader.LeaderSelectorListener;
+import org.apache.curator.framework.recipes.locks.InterProcessSemaphoreMutex;
+import org.apache.curator.framework.recipes.shared.SharedCount;
+import org.apache.curator.framework.state.ConnectionState;
+import org.junit.Test;
+
+import com.baeldung.apache.curator.BaseTest;
+
+public class RecipesManualTest extends BaseTest {
+
+    @Test
+    public void givenRunningZookeeper_whenUsingLeaderElection_thenNoErrors() {
+        try (CuratorFramework client = newClient()) {
+            client.start();
+            LeaderSelector leaderSelector = new LeaderSelector(client, "/mutex/select/leader/for/job/A", new LeaderSelectorListener() {
+
+                @Override
+                public void stateChanged(CuratorFramework client, ConnectionState newState) {
+
+                }
+
+                @Override
+                public void takeLeadership(CuratorFramework client) throws Exception {
+                    // I'm the leader of the job A !
+                }
+
+            });
+
+            leaderSelector.start();
+
+            // Wait until the job A is done among all the members
+
+            leaderSelector.close();
+        }
+    }
+
+    @Test
+    public void givenRunningZookeeper_whenUsingSharedLock_thenNoErrors() throws Exception {
+        try (CuratorFramework client = newClient()) {
+            client.start();
+            InterProcessSemaphoreMutex sharedLock = new InterProcessSemaphoreMutex(client, "/mutex/process/A");
+
+            sharedLock.acquire();
+
+            // Do process A
+
+            sharedLock.release();
+        }
+    }
+
+    @Test
+    public void givenRunningZookeeper_whenUsingSharedCounter_thenCounterIsIncrement() throws Exception {
+        try (CuratorFramework client = newClient()) {
+            client.start();
+
+            try (SharedCount counter = new SharedCount(client, "/counters/A", 0)) {
+                counter.start();
+
+                counter.setCount(0);
+                counter.setCount(counter.getCount() + 1);
+
+                assertThat(counter.getCount()).isEqualTo(1);
+            }
+
+        }
+    }
+
+}
@@ -0,0 +1,25 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>com.baeldung</groupId>
+    <artifactId>apache-tika</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>parent-modules</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
+    </parent>
+
+    <properties>
+        <tika.version>1.17</tika.version>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.apache.tika</groupId>
+            <artifactId>tika-parsers</artifactId>
+            <version>${tika.version}</version>
+        </dependency>
+    </dependencies>
+</project>
@@ -0,0 +1,67 @@
+package com.baeldung.tika;
+
+import java.io.IOException;
+import java.io.InputStream;
+
+import org.apache.tika.Tika;
+import org.apache.tika.detect.DefaultDetector;
+import org.apache.tika.detect.Detector;
+import org.apache.tika.exception.TikaException;
+import org.apache.tika.metadata.Metadata;
+import org.apache.tika.mime.MediaType;
+import org.apache.tika.parser.AutoDetectParser;
+import org.apache.tika.parser.ParseContext;
+import org.apache.tika.parser.Parser;
+import org.apache.tika.sax.BodyContentHandler;
+import org.xml.sax.ContentHandler;
+import org.xml.sax.SAXException;
+
+public class TikaAnalysis {
+    public static String detectDocTypeUsingDetector(InputStream stream) throws IOException {
+        Detector detector = new DefaultDetector();
+        Metadata metadata = new Metadata();
+
+        MediaType mediaType = detector.detect(stream, metadata);
+        return mediaType.toString();
+    }
+
+    public static String detectDocTypeUsingFacade(InputStream stream) throws IOException {
+        Tika tika = new Tika();
+        String mediaType = tika.detect(stream);
+        return mediaType;
+    }
+
+    public static String extractContentUsingParser(InputStream stream) throws IOException, TikaException, SAXException {
+        Parser parser = new AutoDetectParser();
+        ContentHandler handler = new BodyContentHandler();
+        Metadata metadata = new Metadata();
+        ParseContext context = new ParseContext();
+
+        parser.parse(stream, handler, metadata, context);
+        return handler.toString();
+    }
+
+    public static String extractContentUsingFacade(InputStream stream) throws IOException, TikaException {
+        Tika tika = new Tika();
+        String content = tika.parseToString(stream);
+        return content;
+    }
+
+    public static Metadata extractMetadatatUsingParser(InputStream stream) throws IOException, SAXException, TikaException {
+        Parser parser = new AutoDetectParser();
+        ContentHandler handler = new BodyContentHandler();
+        Metadata metadata = new Metadata();
+        ParseContext context = new ParseContext();
+
+        parser.parse(stream, handler, metadata, context);
+        return metadata;
+    }
+
+    public static Metadata extractMetadatatUsingFacade(InputStream stream) throws IOException, TikaException {
+        Tika tika = new Tika();
+        Metadata metadata = new Metadata();
+
+        tika.parse(stream, metadata);
+        return metadata;
+    }
+}
@@ -0,0 +1,79 @@
+package com.baeldung.tika;
+
+import static org.hamcrest.CoreMatchers.containsString;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertThat;
+
+import java.io.IOException;
+import java.io.InputStream;
+
+import org.apache.tika.exception.TikaException;
+import org.apache.tika.metadata.Metadata;
+import org.junit.Test;
+import org.xml.sax.SAXException;
+
+public class TikaUnitTest {
+    @Test
+    public void whenUsingDetector_thenDocumentTypeIsReturned() throws IOException {
+        InputStream stream = this.getClass().getClassLoader().getResourceAsStream("tika.txt");
+        String mediaType = TikaAnalysis.detectDocTypeUsingDetector(stream);
+
+        assertEquals("application/pdf", mediaType);
+
+        stream.close();
+    }
+
+    @Test
+    public void whenUsingFacade_thenDocumentTypeIsReturned() throws IOException {
+        InputStream stream = this.getClass().getClassLoader().getResourceAsStream("tika.txt");
+        String mediaType = TikaAnalysis.detectDocTypeUsingFacade(stream);
+
+        assertEquals("application/pdf", mediaType);
+
+        stream.close();
+    }
+
+    @Test
+    public void whenUsingParser_thenContentIsReturned() throws IOException, TikaException, SAXException {
+        InputStream stream = this.getClass().getClassLoader().getResourceAsStream("tika.docx");
+        String content = TikaAnalysis.extractContentUsingParser(stream);
+
+        assertThat(content, containsString("Apache Tika - a content analysis toolkit"));
+        assertThat(content, containsString("detects and extracts metadata and text"));
+
+        stream.close();
+    }
+
+    @Test
+    public void whenUsingFacade_thenContentIsReturned() throws IOException, TikaException {
+        InputStream stream = this.getClass().getClassLoader().getResourceAsStream("tika.docx");
+        String content = TikaAnalysis.extractContentUsingFacade(stream);
+
+        assertThat(content, containsString("Apache Tika - a content analysis toolkit"));
+        assertThat(content, containsString("detects and extracts metadata and text"));
+
+        stream.close();
+    }
+
+    @Test
+    public void whenUsingParser_thenMetadataIsReturned() throws IOException, TikaException, SAXException {
+        InputStream stream = this.getClass().getClassLoader().getResourceAsStream("tika.xlsx");
+        Metadata metadata = TikaAnalysis.extractMetadatatUsingParser(stream);
+
+        assertEquals("org.apache.tika.parser.DefaultParser", metadata.get("X-Parsed-By"));
+        assertEquals("Microsoft Office User", metadata.get("Author"));
+
+        stream.close();
+    }
+
+    @Test
+    public void whenUsingFacade_thenMetadataIsReturned() throws IOException, TikaException {
+        InputStream stream = this.getClass().getClassLoader().getResourceAsStream("tika.xlsx");
+        Metadata metadata = TikaAnalysis.extractMetadatatUsingFacade(stream);
+
+        assertEquals("org.apache.tika.parser.DefaultParser", metadata.get("X-Parsed-By"));
+        assertEquals("Microsoft Office User", metadata.get("Author"));
+
+        stream.close();
+    }
+}
@@ -6,6 +6,12 @@
 	<version>0.0.1-SNAPSHOT</version>
 	<packaging>jar</packaging>

+	<parent>
+		<groupId>com.baeldung</groupId>
+		<artifactId>parent-modules</artifactId>
+		<version>1.0.0-SNAPSHOT</version>
+	</parent>
+	
 	<dependencies>
 		<dependency>
 			<groupId>org.apache.zookeeper</groupId>
@@ -0,0 +1,137 @@
+package com.baeldung.ec2;
+
+import java.util.Arrays;
+
+import com.amazonaws.auth.AWSCredentials;
+import com.amazonaws.auth.AWSStaticCredentialsProvider;
+import com.amazonaws.auth.BasicAWSCredentials;
+import com.amazonaws.regions.Regions;
+import com.amazonaws.services.ec2.AmazonEC2;
+import com.amazonaws.services.ec2.AmazonEC2ClientBuilder;
+import com.amazonaws.services.ec2.model.AuthorizeSecurityGroupIngressRequest;
+import com.amazonaws.services.ec2.model.CreateKeyPairRequest;
+import com.amazonaws.services.ec2.model.CreateKeyPairResult;
+import com.amazonaws.services.ec2.model.CreateSecurityGroupRequest;
+import com.amazonaws.services.ec2.model.DescribeInstancesRequest;
+import com.amazonaws.services.ec2.model.DescribeInstancesResult;
+import com.amazonaws.services.ec2.model.DescribeKeyPairsRequest;
+import com.amazonaws.services.ec2.model.DescribeKeyPairsResult;
+import com.amazonaws.services.ec2.model.IpPermission;
+import com.amazonaws.services.ec2.model.IpRange;
+import com.amazonaws.services.ec2.model.MonitorInstancesRequest;
+import com.amazonaws.services.ec2.model.RebootInstancesRequest;
+import com.amazonaws.services.ec2.model.RunInstancesRequest;
+import com.amazonaws.services.ec2.model.StartInstancesRequest;
+import com.amazonaws.services.ec2.model.StopInstancesRequest;
+import com.amazonaws.services.ec2.model.UnmonitorInstancesRequest;
+
+public class EC2Application {
+
+    private static final AWSCredentials credentials;
+
+    static {
+        // put your accesskey and secretkey here
+        credentials = new BasicAWSCredentials(
+            "<AWS accesskey>", 
+            "<AWS secretkey>"
+        );
+    }
+
+    public static void main(String[] args) {
+       
+        // Set up the client
+        AmazonEC2 ec2Client = AmazonEC2ClientBuilder.standard()
+            .withCredentials(new AWSStaticCredentialsProvider(credentials))
+            .withRegion(Regions.US_EAST_1)
+            .build();
+
+        // Create a security group
+        CreateSecurityGroupRequest createSecurityGroupRequest = new CreateSecurityGroupRequest().withGroupName("BaeldungSecurityGroup")
+            .withDescription("Baeldung Security Group");
+        ec2Client.createSecurityGroup(createSecurityGroupRequest);
+
+        // Allow HTTP and SSH traffic
+        IpRange ipRange1 = new IpRange().withCidrIp("0.0.0.0/0");
+
+        IpPermission ipPermission1 = new IpPermission().withIpv4Ranges(Arrays.asList(new IpRange[] { ipRange1 }))
+            .withIpProtocol("tcp")
+            .withFromPort(80)
+            .withToPort(80);
+
+        IpPermission ipPermission2 = new IpPermission().withIpv4Ranges(Arrays.asList(new IpRange[] { ipRange1 }))
+            .withIpProtocol("tcp")
+            .withFromPort(22)
+            .withToPort(22);
+
+        AuthorizeSecurityGroupIngressRequest authorizeSecurityGroupIngressRequest = new AuthorizeSecurityGroupIngressRequest()
+            .withGroupName("BaeldungSecurityGroup")
+            .withIpPermissions(ipPermission1, ipPermission2);
+
+        ec2Client.authorizeSecurityGroupIngress(authorizeSecurityGroupIngressRequest);
+
+        // Create KeyPair
+        CreateKeyPairRequest createKeyPairRequest = new CreateKeyPairRequest()
+            .withKeyName("baeldung-key-pair");
+        CreateKeyPairResult createKeyPairResult = ec2Client.createKeyPair(createKeyPairRequest);
+        String privateKey = createKeyPairResult
+            .getKeyPair()
+            .getKeyMaterial(); // make sure you keep it, the private key, Amazon doesn't store the private key
+
+        // See what key-pairs you've got
+        DescribeKeyPairsRequest describeKeyPairsRequest = new DescribeKeyPairsRequest();
+        DescribeKeyPairsResult describeKeyPairsResult = ec2Client.describeKeyPairs(describeKeyPairsRequest);
+
+        // Launch an Amazon Instance
+        RunInstancesRequest runInstancesRequest = new RunInstancesRequest().withImageId("ami-97785bed") // https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/AMIs.html | https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/usingsharedamis-finding.html
+            .withInstanceType("t2.micro") // https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/instance-types.html
+            .withMinCount(1)
+            .withMaxCount(1)
+            .withKeyName("baeldung-key-pair") // optional - if not present, can't connect to instance
+            .withSecurityGroups("BaeldungSecurityGroup");
+
+        String yourInstanceId = ec2Client.runInstances(runInstancesRequest).getReservation().getInstances().get(0).getInstanceId();
+
+        // Start an Instance
+        StartInstancesRequest startInstancesRequest = new StartInstancesRequest()
+            .withInstanceIds(yourInstanceId);
+
+        ec2Client.startInstances(startInstancesRequest);
+
+        // Monitor Instances
+        MonitorInstancesRequest monitorInstancesRequest = new MonitorInstancesRequest()
+            .withInstanceIds(yourInstanceId);
+
+        ec2Client.monitorInstances(monitorInstancesRequest);
+
+        UnmonitorInstancesRequest unmonitorInstancesRequest = new UnmonitorInstancesRequest()
+            .withInstanceIds(yourInstanceId);
+
+        ec2Client.unmonitorInstances(unmonitorInstancesRequest);
+
+        // Reboot an Instance
+
+        RebootInstancesRequest rebootInstancesRequest = new RebootInstancesRequest()
+            .withInstanceIds(yourInstanceId);
+
+        ec2Client.rebootInstances(rebootInstancesRequest);
+
+        // Stop an Instance
+        StopInstancesRequest stopInstancesRequest = new StopInstancesRequest()
+            .withInstanceIds(yourInstanceId);
+
+        ec2Client.stopInstances(stopInstancesRequest)
+            .getStoppingInstances()
+            .get(0)
+            .getPreviousState()
+            .getName();
+
+        // Describe an Instance
+        DescribeInstancesRequest describeInstancesRequest = new DescribeInstancesRequest();
+        DescribeInstancesResult response = ec2Client.describeInstances(describeInstancesRequest);
+        System.out.println(response.getReservations()
+            .get(0)
+            .getInstances()
+            .get(0)
+            .getKernelId());
+    }
+}
@@ -8,6 +8,6 @@ repositories {
 }

 dependencies {
-    compile 'org.codehaus.groovy:groovy-all:2.5.0-alpha-1'
+    compile 'org.codehaus.groovy:groovy-all:2.4.13'
    testCompile 'org.spockframework:spock-core:1.1-groovy-2.4'
 }
@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <artifactId>core-groovy</artifactId>
@@ -24,17 +23,17 @@
        <dependency>
            <groupId>org.codehaus.groovy</groupId>
            <artifactId>groovy</artifactId>
-            <version>2.5.0-alpha-1</version>
+            <version>2.4.13</version>
        </dependency>
        <dependency>
            <groupId>org.codehaus.groovy</groupId>
            <artifactId>groovy-all</artifactId>
-            <version>2.5.0-alpha-1</version>
+            <version>2.4.13</version>
        </dependency>
        <dependency>
            <groupId>org.codehaus.groovy</groupId>
            <artifactId>groovy-sql</artifactId>
-            <version>2.5.0-alpha-1</version>
+            <version>2.4.13</version>
        </dependency>
        <dependency>
            <groupId>org.junit.jupiter</groupId>
@@ -1,6 +1,5 @@
 package com.baeldung.json

-import groovy.json.JsonGenerator
 import groovy.json.JsonOutput
 import groovy.json.JsonParserType
 import groovy.json.JsonSlurper
@@ -21,14 +20,6 @@ class JsonParser {
        JsonOutput.toJson(account)
    }

-    String toJson(Account account, String dateFormat, String... fieldsToExclude) {
-        JsonGenerator generator = new JsonGenerator.Options()
-                .dateFormat(dateFormat)
-                .excludeFieldsByName(fieldsToExclude)
-                .build()
-        generator.toJson(account)
-    }
-
    String prettyfy(String json) {
        JsonOutput.prettyPrint(json)
    }
@@ -52,20 +52,6 @@ class JsonParserTest extends Specification {
            json == '{"value":15.6,"createdAt":"2018-01-01T00:00:00+0000","id":"123"}'
    }

-    def 'Should parse to Json given an Account object, a date format and fields to exclude' () {
-        given:
-            Account account = new Account(
-                    id: '123',
-                    value: 15.6,
-                    createdAt: new SimpleDateFormat('MM/dd/yyyy').parse('01/01/2018')
-            )
-        when:
-            def json = jsonParser.toJson(account, 'MM/dd/yyyy', 'value')
-        then:
-            json
-            json == '{"createdAt":"01/01/2018","id":"123"}'
-    }
-
    def 'Should prettify given a json string' () {
        given:
            String json = '{"value":15.6,"createdAt":"01/01/2018","id":"123456"}'
@@ -41,3 +41,5 @@
 - [Primitive Type Streams in Java 8](http://www.baeldung.com/java-8-primitive-streams)
 - [Fail-Safe Iterator vs Fail-Fast Iterator](http://www.baeldung.com/java-fail-safe-vs-fail-fast-iterator)
 - [Shuffling Collections In Java](http://www.baeldung.com/java-shuffle-collection)
+- [Java 8 StringJoiner](http://www.baeldung.com/java-string-joiner)
+- [Introduction to Spliterator in Java](http://www.baeldung.com/java-spliterator)
@@ -0,0 +1,71 @@
+package com.baeldung.findanelement;
+
+import java.util.List;
+import java.util.ListIterator;
+import org.apache.commons.collections4.IterableUtils;
+import com.google.common.base.Predicate;
+import com.google.common.collect.Iterables;
+
+public class FindElementInAList<T> {
+
+    public T findUsingIndexOf(T element, List<T> list) {
+        int index = list.indexOf(element);
+        if (index >= 0) {
+            return element;
+        }
+        return null;
+    }
+
+    public boolean findUsingListIterator(T element, List<T> list) {
+        ListIterator<T> listIterator = list.listIterator();
+        while (listIterator.hasNext()) {
+            T elementFromList = listIterator.next();
+            if (elementFromList.equals(element)) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    public boolean findUsingEnhancedForLoop(T element, List<T> list) {
+        for (T elementFromList : list) {
+            if (element.equals(elementFromList)) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    public T findUsingStream(T element, List<T> list) {
+        return list.stream()
+            .filter(integer -> integer.equals(element))
+            .findFirst()
+            .orElse(null);
+    }
+
+    public T findUsingParallelStream(T element, List<T> list) {
+        return list.parallelStream()
+            .filter(integer -> integer.equals(element))
+            .findAny()
+            .orElse(null);
+    }
+
+    public T findUsingGuava(T element, List<T> list) {
+        T foundElement = Iterables.tryFind(list, new Predicate<T>() {
+            public boolean apply(T input) {
+                return element.equals(input);
+            }
+        }).orNull();
+        return foundElement;
+    }
+
+    public T findUsingApacheCommon(T element, List<T> list) {
+        T foundElement = IterableUtils.find(list, new org.apache.commons.collections4.Predicate<T>() {
+            public boolean evaluate(T input) {
+                return element.equals(input);
+            }
+        });
+        return foundElement;
+    }
+
+}
@@ -0,0 +1,116 @@
+package com.baeldung.findanelement;
+
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertTrue;
+import java.util.ArrayList;
+import java.util.List;
+import org.junit.Test;
+
+public class FindAnElementTest {
+
+    private static List<Integer> scores = new ArrayList<>();
+    static {
+        scores.add(0);
+        scores.add(1);
+        scores.add(2);
+    }
+
+    private static FindElementInAList<Integer> findElementInAList = new FindElementInAList<>();
+
+    @Test
+    public void givenElement_whenFoundUsingIndexOf_thenReturnElement() {
+        Integer scoreToFind = 1;
+        Integer score = findElementInAList.findUsingIndexOf(scoreToFind, scores);
+        assertTrue(score.equals(scoreToFind));
+    }
+
+    @Test
+    public void givenElement_whenNotFoundUsingListIterator_thenReturnNull() {
+        boolean found = findElementInAList.findUsingListIterator(5, scores);
+        assertTrue(!found);
+    }
+    
+    @Test
+    public void givenElement_whenFoundListIterator_thenReturnElement() {
+        Integer scoreToFind = 1;
+        boolean found = findElementInAList.findUsingListIterator(scoreToFind, scores);
+        assertTrue(found);
+    }
+
+    @Test
+    public void givenElement_whenNotFoundUsingIndexOf_thenReturnNull() {
+        Integer score = findElementInAList.findUsingIndexOf(5, scores);
+        assertNull(score);
+    }
+
+    @Test
+    public void givenElement_whenFoundUsingEnhancedForLoop_thenReturnElement() {
+        Integer scoreToFind = 1;
+        boolean found = findElementInAList.findUsingEnhancedForLoop(scoreToFind, scores);
+        assertTrue(found);
+    }
+
+    @Test
+    public void givenElement_whenNotFoundUsingEnhancedForLoop_thenReturnNull() {
+        Integer scoreToFind = 5;
+        boolean found = findElementInAList.findUsingEnhancedForLoop(scoreToFind, scores);
+        assertTrue(!found);
+    }
+
+    @Test
+    public void givenElement_whenFoundUsingStream_thenReturnElement() {
+        Integer scoreToFind = 1;
+        Integer score = findElementInAList.findUsingStream(scoreToFind, scores);
+        assertTrue(score.equals(scoreToFind));
+    }
+
+    @Test
+    public void givenElement_whenNotFoundUsingStream_thenReturnNull() {
+        Integer scoreToFind = 5;
+        Integer score = findElementInAList.findUsingStream(scoreToFind, scores);
+        assertNull(score);
+    }
+
+    @Test
+    public void givenElement_whenFoundUsingParallelStream_thenReturnElement() {
+        Integer scoreToFind = 1;
+        Integer score = findElementInAList.findUsingParallelStream(scoreToFind, scores);
+        assertTrue(score.equals(scoreToFind));
+    }
+
+    @Test
+    public void givenElement_whenNotFoundUsingParallelStream_thenReturnNull() {
+        Integer scoreToFind = 5;
+        Integer score = findElementInAList.findUsingParallelStream(scoreToFind, scores);
+        assertNull(score);
+    }
+
+    @Test
+    public void givenElement_whenFoundUsingGuava_thenReturnElement() {
+        Integer scoreToFind = 1;
+        Integer score = findElementInAList.findUsingGuava(scoreToFind, scores);
+        assertTrue(score.equals(scoreToFind));
+    }
+
+    @Test
+    public void givenElement_whenNotFoundUsingGuava_thenReturnNull() {
+        Integer scoreToFind = 5;
+        Integer score = findElementInAList.findUsingGuava(scoreToFind, scores);
+        assertNull(score);
+    }
+
+    @Test
+    public void givenElement_whenFoundUsingApacheCommons_thenReturnElement() {
+        Integer scoreToFind = 1;
+        Integer score = findElementInAList.findUsingApacheCommon(scoreToFind, scores);
+        assertTrue(score.equals(scoreToFind));
+    }
+
+    @Test
+    public void givenElement_whenNotFoundUsingApacheCommons_thenReturnNull() {
+        Integer scoreToFind = 5;
+        Integer score = findElementInAList.findUsingApacheCommon(scoreToFind, scores);
+        assertNull(score);
+    }
+
+}
@@ -0,0 +1,89 @@
+package com.baeldung.math;
+
+import static org.junit.Assert.assertEquals;
+
+import org.junit.Test;
+
+public class MathNewMethodsUnitTest {
+
+    @Test
+    public void whenAddExactToInteger_thenExpectCorrectArithmeticResult() {
+        assertEquals(150, Math.addExact(100, 50));                // Returns 150
+    }
+
+    @Test
+    public void whenSubstractExactFromInteger_thenExpectCorrectArithmeticResult() {
+        assertEquals(50, Math.subtractExact(100, 50));            // Returns 50
+    }
+
+    @Test
+    public void whenDecrementExactInteger_thenExpectCorrectArithmeticResult() {
+        assertEquals(99, Math.decrementExact(100));               // Returns 99
+    }
+
+    @Test
+    public void whenIncrementExactToInteger_thenExpectCorrectArithmeticResult() {
+        assertEquals(101, Math.incrementExact(100));              // Returns 101
+    }
+
+    @Test
+    public void whenMultiplyExactTwoIntegers_thenExpectCorrectArithmeticResult() {
+        assertEquals(500, Math.multiplyExact(100, 5));            // Returns 500
+    }
+
+    @Test
+    public void whenNegateExactInteger_thenExpectCorrectArithmeticResult() {
+        assertEquals(-100, Math.negateExact(100));                // Returns -100
+    }
+    
+    @Test(expected = ArithmeticException.class) 
+    public void whenAddToMaxInteger_thenThrowsArithmeticException() {
+        Math.addExact(Integer.MAX_VALUE, 1);                      // Throws ArithmeticException
+    }
+    
+    @Test(expected = ArithmeticException.class) 
+    public void whenDecrementMinInteger_thenThrowsArithmeticException() {
+        Math.decrementExact(Integer.MIN_VALUE);                   // Throws ArithmeticException
+    }
+    
+    @Test(expected = ArithmeticException.class) 
+    public void whenIncrementMaxLong_thenThrowsArithmeticException() {
+        Math.incrementExact(Long.MAX_VALUE);                      // Throws ArithmeticException
+    }
+    
+    @Test(expected = ArithmeticException.class) 
+    public void whenMultiplyMaxLong_thenThrowsArithmeticException() {
+        Math.multiplyExact(Long.MAX_VALUE, 2);                    // Throws ArithmeticException
+    }
+    
+    @Test(expected = ArithmeticException.class) 
+    public void whenNegateMinInteger_thenThrowsArithmeticException() {
+        Math.negateExact(Integer.MIN_VALUE);                      // MinInt value: −2.147.483.648, but MaxInt Value: 2.147.483.647  => Throws ArithmeticException
+    }
+    
+    @Test(expected = ArithmeticException.class) 
+    public void whenSubstractFromMinInteger_thenThrowsArithmeticException() {
+        Math.subtractExact(Integer.MIN_VALUE, 1);
+    }
+    
+    @Test
+    public void whenFloorDivTwoIntegers_thenExpectCorrectArithmeticResult() {
+        assertEquals(3, Math.floorDiv(7, 2));                     // Exact quotient is 3.5 so floor(3.5) == 3
+        assertEquals(-4, Math.floorDiv(-7, 2));                   // Exact quotient is -3.5 so floor(-3.5) == -4
+    }
+    
+    @Test
+    public void whenModDivTwoIntegers_thenExpectCorrectArithmeticResult() {
+        assertEquals(2, Math.floorMod(5, 3));                     // Returns 2: floorMod for positive numbers returns the same as % operator
+        assertEquals(1, Math.floorMod(-5, 3));                    // Returns 1 and not 2 because floorDiv(-5, 3) is -2 and not -1 and (-2*3) + (1) = -5
+    }
+    
+    @Test
+    public void whenNextDownOfDouble_thenExpectCorrectNumber() {
+        double number = 3.0;
+        double expected = 2.999999999999;
+        double delta = 0.00000001;
+        assertEquals(expected, Math.nextDown(number), delta);     // The delta defines the accepted error range
+    }
+    
+}
@@ -1,26 +1,5 @@
-*.class
-
 0.*

-#folders#
-/target
-/neoDb*
-/data
-/src/main/webapp/WEB-INF/classes
-*/META-INF/*
-.resourceCache
-
-# Packaged files #
-*.jar
-*.war
-*.ear
-
 # Files generated by integration tests
-*.txt
-backup-pom.xml
-/bin/
-/temp
-
-#IntelliJ specific
-.idea/
-*.iml
+# *.txt
+/temp
@@ -1,5 +1,4 @@
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.baeldung</groupId>
    <artifactId>core-java-io</artifactId>
@@ -211,16 +210,6 @@
            <artifactId>jmh-generator-annprocess</artifactId>
            <version>1.19</version>
        </dependency>
-		<dependency>
-		    <groupId>org.springframework</groupId>
-		    <artifactId>spring-web</artifactId>
-		    <version>4.3.4.RELEASE</version>
-		</dependency>
- 		<dependency>
-			<groupId>org.springframework.boot</groupId>
-			<artifactId>spring-boot-starter</artifactId>
-			<version>1.5.8.RELEASE</version>
-		</dependency>
        <dependency>
            <groupId>org.hsqldb</groupId>
            <artifactId>hsqldb</artifactId>
@@ -264,99 +253,6 @@
                </configuration>
            </plugin>

-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-dependency-plugin</artifactId>
-                <executions>
-                    <execution>
-                        <id>copy-dependencies</id>
-                        <phase>prepare-package</phase>
-                        <goals>
-                            <goal>copy-dependencies</goal>
-                        </goals>
-                        <configuration>
-                            <outputDirectory>${project.build.directory}/libs</outputDirectory>
-                        </configuration>
-                    </execution>
-                </executions>
-            </plugin>
-
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-jar-plugin</artifactId>
-                <configuration>
-                    <archive>
-                        <manifest>
-                            <addClasspath>true</addClasspath>
-                            <classpathPrefix>libs/</classpathPrefix>
-                            <mainClass>org.baeldung.executable.ExecutableMavenJar</mainClass>
-                        </manifest>
-                    </archive>
-                </configuration>
-            </plugin>
-
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-assembly-plugin</artifactId>
-                <executions>
-                    <execution>
-                        <phase>package</phase>
-                        <goals>
-                            <goal>single</goal>
-                        </goals>
-                        <configuration>
-                            <archiveBaseDirectory>${project.basedir}</archiveBaseDirectory>
-                            <archive>
-                                <manifest>
-                                    <mainClass>org.baeldung.executable.ExecutableMavenJar</mainClass>
-                                </manifest>
-                            </archive>
-                            <descriptorRefs>
-                                <descriptorRef>jar-with-dependencies</descriptorRef>
-                            </descriptorRefs>
-                        </configuration>
-                    </execution>
-                </executions>
-            </plugin>
-
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-shade-plugin</artifactId>
-                <executions>
-                    <execution>
-                        <goals>
-                            <goal>shade</goal>
-                        </goals>
-                        <configuration>
-                            <shadedArtifactAttached>true</shadedArtifactAttached>
-                            <transformers>
-                                <transformer
-                                        implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
-                                    <mainClass>org.baeldung.executable.ExecutableMavenJar</mainClass>
-                                </transformer>
-                            </transformers>
-                        </configuration>
-                    </execution>
-                </executions>
-            </plugin>
-
-            <plugin>
-                <groupId>com.jolira</groupId>
-                <artifactId>onejar-maven-plugin</artifactId>
-                <executions>
-                    <execution>
-                        <configuration>
-                            <mainClass>org.baeldung.executable.ExecutableMavenJar</mainClass>
-                            <attachToBuild>true</attachToBuild>
-                            <filename>${project.build.finalName}-onejar.${project.packaging}</filename>
-                        </configuration>
-                        <goals>
-                            <goal>one-jar</goal>
-                        </goals>
-                    </execution>
-                </executions>
-            </plugin>
-
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
@@ -384,19 +280,19 @@
                        <argument>-Xmx300m</argument>
                        <argument>-XX:+UseParallelGC</argument>
                        <argument>-classpath</argument>
-                        <classpath/>
+                        <classpath />
                        <argument>com.baeldung.outofmemoryerror.OutOfMemoryGCLimitExceed</argument>
                    </arguments>
                </configuration>
            </plugin>
-            
+
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-javadoc-plugin</artifactId>
                <version>3.0.0-M1</version>
                <configuration>
                    <source>1.8</source>
-	                <target>1.8</target>
+                    <target>1.8</target>
                </configuration>
            </plugin>

@@ -442,7 +338,7 @@
                        <executions>
                            <execution>
                                <id>run-benchmarks</id>
-                            <!--    <phase>integration-test</phase>-->
+                                <!-- <phase>integration-test</phase> -->
                                <phase>none</phase>
                                <goals>
                                    <goal>exec</goal>
@@ -452,7 +348,7 @@
                                    <executable>java</executable>
                                    <arguments>
                                        <argument>-classpath</argument>
-                                        <classpath/>
+                                        <classpath />
                                        <argument>org.openjdk.jmh.Main</argument>
                                        <argument>.*</argument>
                                    </arguments>
@@ -490,7 +386,7 @@
        <protonpack.version>1.13</protonpack.version>
        <streamex.version>0.6.5</streamex.version>
        <vavr.version>0.9.0</vavr.version>
-        
+
        <!-- testing -->
        <org.hamcrest.version>1.3</org.hamcrest.version>
        <junit.version>4.12</junit.version>
@@ -10,7 +10,7 @@ import java.nio.file.WatchKey;
 import java.nio.file.WatchService;

 public class DirectoryWatcherExample {
-    
+
    public static void main(String[] args) throws IOException, InterruptedException {
        WatchService watchService = FileSystems.getDefault().newWatchService();
        Path path = Paths.get(System.getProperty("user.home"));
@@ -25,5 +25,5 @@ public class DirectoryWatcherExample {

        watchService.close();
    }
-    
+
 }
--- a/Show More
+++ b/Show More