Merge branch 'master' of https://github.com/eugenp/tutorials

2020-09-30 21:48:14 -03:00
parent cf1b728d3e 5a8f420807
commit d09a0fdf8e
161 changed files with 1370 additions and 620 deletions
@@ -0,0 +1,30 @@
+package com.baeldung.algorithms.linkedlist;
+
+public class LinkedListReversal {
+
+    ListNode reverseList(ListNode head) {
+        ListNode previous = null;
+        ListNode current = head;
+        while (current != null) {
+            ListNode nextElement = current.getNext();
+            current.setNext(previous);
+            previous = current;
+            current = nextElement;
+        }
+        return previous;
+    }
+
+    ListNode reverseListRecursive(ListNode head) {
+        if (head == null) {
+            return null;
+        }
+        if (head.getNext() == null) {
+            return head;
+        }
+        ListNode node = reverseListRecursive(head.getNext());
+        head.getNext().setNext(head);
+        head.setNext(null);
+        return node;
+    }
+
+}
@@ -0,0 +1,28 @@
+package com.baeldung.algorithms.linkedlist;
+
+public class ListNode {
+
+    private int data;
+    private ListNode next;
+
+    ListNode(int data) {
+        this.data = data;
+        this.next = null;
+    }
+
+    public int getData() {
+        return data;
+    }
+
+    public ListNode getNext() {
+        return next;
+    }
+
+    public void setData(int data) {
+        this.data = data;
+    }
+
+    public void setNext(ListNode next) {
+        this.next = next;
+    }
+}
@@ -0,0 +1,59 @@
+package com.baeldung.algorithms.linkedlist;
+
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+
+public class LinkedListReversalUnitTest {
+    @Test
+    public void givenLinkedList_whenIterativeReverse_thenOutputCorrectResult() {
+        ListNode head = constructLinkedList();
+        ListNode node = head;
+        for (int i = 1; i <= 5; i++) {
+            assertNotNull(node);
+            assertEquals(i, node.getData());
+            node = node.getNext();
+        }
+        LinkedListReversal reversal = new LinkedListReversal();
+        node = reversal.reverseList(head);
+        for (int i = 5; i >= 1; i--) {
+            assertNotNull(node);
+            assertEquals(i, node.getData());
+            node = node.getNext();
+        }
+    }
+
+    @Test
+    public void givenLinkedList_whenRecursiveReverse_thenOutputCorrectResult() {
+        ListNode head = constructLinkedList();
+        ListNode node = head;
+        for (int i = 1; i <= 5; i++) {
+            assertNotNull(node);
+            assertEquals(i, node.getData());
+            node = node.getNext();
+        }
+        LinkedListReversal reversal = new LinkedListReversal();
+        node = reversal.reverseListRecursive(head);
+        for (int i = 5; i >= 1; i--) {
+            assertNotNull(node);
+            assertEquals(i, node.getData());
+            node = node.getNext();
+        }
+    }
+
+    private ListNode constructLinkedList() {
+        ListNode head = null;
+        ListNode tail = null;
+        for (int i = 1; i <= 5; i++) {
+            ListNode node = new ListNode(i);
+            if (head == null) {
+                head = node;
+            } else {
+                tail.setNext(node);
+            }
+            tail = node;
+        }
+        return head;
+    }
+}
@@ -129,6 +129,11 @@
            <artifactId>zookeeper</artifactId>
            <version>${zookeeper.version}</version>
        </dependency>
+        <dependency>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-core</artifactId>
+            <version>${jackson.version}</version>
+        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
@@ -0,0 +1,61 @@
+package com.baeldung.lastmodifiedfile;
+
+import java.io.File;
+import java.io.FileFilter;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.Arrays;
+import java.util.Optional;
+
+import org.apache.commons.io.comparator.LastModifiedFileComparator;
+import org.apache.commons.io.filefilter.FileFilterUtils;
+
+public class LastModifiedFileApp {
+
+    public static File findUsingIOApi(String sdir) {
+        File dir = new File(sdir);
+        if (dir.isDirectory()) {
+            Optional<File> opFile = Arrays.stream(dir.listFiles(File::isFile))
+              .max((f1, f2) -> Long.compare(f1.lastModified(), f2.lastModified()));
+
+            if (opFile.isPresent()) {
+                return opFile.get();
+            }
+        }
+
+        return null;
+    }
+
+    public static Path findUsingNIOApi(String sdir) throws IOException {
+        Path dir = Paths.get(sdir);
+        if (Files.isDirectory(dir)) {
+            Optional<Path> opPath = Files.list(dir)
+              .filter(p -> !Files.isDirectory(p))
+              .sorted((p1, p2) -> Long.valueOf(p2.toFile().lastModified())
+                .compareTo(p1.toFile().lastModified()))
+              .findFirst();
+
+            if (opPath.isPresent()) {
+                return opPath.get();
+            }
+        }
+
+        return null;
+    }
+
+    public static File findUsingCommonsIO(String sdir) {
+        File dir = new File(sdir);
+        if (dir.isDirectory()) {
+            File[] dirFiles = dir.listFiles((FileFilter) FileFilterUtils.fileFileFilter());
+            if (dirFiles != null && dirFiles.length > 0) {
+                Arrays.sort(dirFiles, LastModifiedFileComparator.LASTMODIFIED_REVERSE);
+                return dirFiles[0];
+            }
+        }
+
+        return null;
+    }
+
+}
@@ -0,0 +1,78 @@
+package com.baeldung.lastmodifiedfile;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+
+import org.apache.commons.io.FileUtils;
+import org.junit.jupiter.api.AfterAll;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
+
+public class LastModifiedFileAppUnitTest {
+
+    private final static String SOURCEDIRECTORY = "src/test/resources/lastmodfiles";
+
+    @BeforeAll
+    public static void setUpFiles() throws IOException, InterruptedException {
+        File srcDir = new File(SOURCEDIRECTORY);
+        if (!srcDir.exists()) {
+            srcDir.mkdir();
+        }
+
+        FileUtils.cleanDirectory(srcDir);
+
+        File file01 = new File(SOURCEDIRECTORY + "/file01.txt");
+        file01.createNewFile();
+
+        Thread.sleep(2000);
+
+        File file02 = new File(SOURCEDIRECTORY + "/file02.txt");
+        file02.createNewFile();
+
+        Thread.sleep(2000);
+
+        File file03 = new File(SOURCEDIRECTORY + "/file03.txt");
+        file03.createNewFile();
+
+        Thread.sleep(2000);
+
+        Files.write(Paths.get(SOURCEDIRECTORY + "/file02.txt"), "Hello File02".getBytes());
+
+    }
+
+    @Test
+    public void givenDirectory_whenUsingIoApi_thenFindLastModfile() throws IOException {
+        File lastModFile = LastModifiedFileApp.findUsingIOApi(SOURCEDIRECTORY);
+
+        assertThat(lastModFile).isNotNull();
+        assertThat(lastModFile.getName()).isEqualTo("file02.txt");
+    }
+
+    @Test
+    public void givenDirectory_whenUsingNioApi_thenFindLastModfile() throws IOException {
+        Path lastModPath = LastModifiedFileApp.findUsingNIOApi(SOURCEDIRECTORY);
+
+        assertThat(lastModPath).isNotNull();
+        assertThat(lastModPath.toFile().getName()).isEqualTo("file02.txt");
+    }
+
+    @Test
+    public void givenDirectory_whenUsingApacheCommons_thenFindLastModfile() throws IOException {
+        File lastModFile = LastModifiedFileApp.findUsingCommonsIO(SOURCEDIRECTORY);
+
+        assertThat(lastModFile).isNotNull();
+        assertThat(lastModFile.getName()).isEqualTo("file02.txt");
+    }
+
+    @AfterAll
+    public static void cleanUp() throws IOException {
+        File srcDir = new File(SOURCEDIRECTORY);
+        FileUtils.deleteDirectory(srcDir);
+    }
+
+}
@@ -0,0 +1,5 @@
+package com.baeldung.getclassobject;
+
+public class Animal {
+    protected int numberOfEyes;
+}
@@ -0,0 +1,4 @@
+package com.baeldung.getclassobject;
+
+public class Monkey extends Animal {
+}
@@ -0,0 +1,4 @@
+package com.baeldung.getclassobject;
+
+public abstract class SomeAbstractClass {
+}
@@ -0,0 +1,4 @@
+package com.baeldung.getclassobject;
+
+interface SomeInterface {
+}
@@ -0,0 +1,9 @@
+package com.baeldung.getclassobject;
+
+public class SomeUtils {
+    private SomeUtils() {
+        throw new RuntimeException("This Util class is not allowed to be instantiated!");
+    }
+    //  public static utilMethods
+    //  ...
+}
@@ -0,0 +1,55 @@
+package com.baeldung.getclassobject;
+
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+public class GetClassObjectUnitTest {
+    @Test
+    public void givenObjectAndType_whenGettingClassObject_thenTwoMethodsHaveTheSameResult() {
+        String str = "I am an object of the String class";
+        Class fromStrObject = str.getClass();
+        Class clazz = String.class;
+        assertSame(fromStrObject, clazz);
+    }
+
+    @Test
+    public void givenClassInheritance_whenGettingRuntimeTypeAndStaticType_thenGetDifferentResult() {
+        Animal animal = new Monkey();
+        Class runtimeType = animal.getClass();
+        Class staticType = Animal.class;
+        //Not equals
+        assertNotEquals(staticType, runtimeType);
+
+        Class monkeyClass = Monkey.class;
+        assertSame(runtimeType, monkeyClass);
+    }
+
+    @Test
+    public void givenPrimitiveType_whenGettingClassObject_thenOnlyStaticTypeWorks() {
+        int number = 7;
+        // Class numberClass = number.getClass();   <-- compilation error
+        Class intType = int.class;
+
+        assertNotNull(intType);
+        assertEquals("int", intType.getName());
+        assertTrue(intType.isPrimitive());
+    }
+
+    @Test
+    public void givenTypeCannotInstantiate_whenGetTypeStatically_thenGetTypesSuccefully() {
+        Class interfaceType = SomeInterface.class;
+        Class abstractClassType = SomeAbstractClass.class;
+        Class utilClassType = SomeUtils.class;
+
+        assertNotNull(interfaceType);
+        assertTrue(interfaceType.isInterface());
+        assertEquals("SomeInterface", interfaceType.getSimpleName());
+
+        assertNotNull(abstractClassType);
+        assertEquals("SomeAbstractClass", abstractClassType.getSimpleName());
+
+        assertNotNull(utilClassType);
+        assertEquals("SomeUtils", utilClassType.getSimpleName());
+    }
+}
@@ -0,0 +1,94 @@
+package com.baeldung.trustedcert;
+
+import org.junit.jupiter.api.Test;
+
+import javax.net.ssl.TrustManager;
+import javax.net.ssl.TrustManagerFactory;
+import javax.net.ssl.X509TrustManager;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.security.KeyStore;
+import java.security.KeyStoreException;
+import java.security.NoSuchAlgorithmException;
+import java.security.cert.Certificate;
+import java.security.cert.CertificateException;
+import java.security.cert.PKIXParameters;
+import java.security.cert.TrustAnchor;
+import java.security.cert.X509Certificate;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.Enumeration;
+import java.util.List;
+import java.util.Set;
+import java.util.stream.Collectors;
+
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertTrue;
+
+public class CertificatesUnitTest {
+
+    private static final String GODADDY_CA_ALIAS = "godaddyrootg2ca [jdk]";
+
+    @Test
+    public void whenLoadingCacertsKeyStore_thenCertificatesArePresent() throws Exception {
+        KeyStore keyStore = loadKeyStore();
+        PKIXParameters params = new PKIXParameters(keyStore);
+
+        Set<TrustAnchor> trustAnchors = params.getTrustAnchors();
+        List<Certificate> certificates = trustAnchors.stream()
+          .map(TrustAnchor::getTrustedCert)
+          .collect(Collectors.toList());
+
+        assertFalse(certificates.isEmpty());
+    }
+
+    @Test
+    public void whenLoadingDefaultKeyStore_thenCertificatesArePresent() throws Exception {
+        TrustManagerFactory trustManagerFactory = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
+        trustManagerFactory.init((KeyStore)null);
+
+        List<TrustManager> trustManagers = Arrays.asList(trustManagerFactory.getTrustManagers());
+        List<X509Certificate> certificates = trustManagers.stream()
+          .filter(X509TrustManager.class::isInstance)
+          .map(X509TrustManager.class::cast)
+          .map(trustManager -> Arrays.asList(trustManager.getAcceptedIssuers()))
+          .flatMap(Collection::stream)
+          .collect(Collectors.toList());
+
+        assertFalse(certificates.isEmpty());
+    }
+
+    @Test
+    public void whenLoadingKeyStore_thenGoDaddyCALabelIsPresent() throws Exception {
+        KeyStore keyStore = loadKeyStore();
+
+        Enumeration<String> aliasEnumeration = keyStore.aliases();
+        List<String> aliases = Collections.list(aliasEnumeration);
+
+        assertTrue(aliases.contains(GODADDY_CA_ALIAS));
+    }
+
+    @Test
+    public void whenLoadingKeyStore_thenGoDaddyCertificateIsPresent() throws Exception {
+        KeyStore keyStore = loadKeyStore();
+
+        Certificate goDaddyCertificate = keyStore.getCertificate(GODADDY_CA_ALIAS);
+
+        assertNotNull(goDaddyCertificate);
+    }
+
+    private KeyStore loadKeyStore() throws CertificateException, NoSuchAlgorithmException, IOException, KeyStoreException {
+        String relativeCacertsPath = "/lib/security/cacerts".replace("/", File.separator);
+        String filename = System.getProperty("java.home") + relativeCacertsPath;
+        FileInputStream is = new FileInputStream(filename);
+
+        KeyStore keystore = KeyStore.getInstance(KeyStore.getDefaultType());
+        String password = "changeit";
+        keystore.load(is, password.toCharArray());
+
+        return keystore;
+    }
+}
@@ -16,11 +16,6 @@
    </parent>

    <dependencies>
-        <dependency>
-            <groupId>io.github.openfeign</groupId>
-            <artifactId>feign-core</artifactId>
-            <version>${feign.version}</version>
-        </dependency>
        <dependency>
            <groupId>io.github.openfeign</groupId>
            <artifactId>feign-okhttp</artifactId>
@@ -44,21 +39,8 @@
        </dependency>
    </dependencies>

-    <build>
-        <pluginManagement>
-            <plugins>
-                <plugin>
-                    <groupId>org.springframework.boot</groupId>
-                    <artifactId>spring-boot-maven-plugin</artifactId>
-                    <version>${spring-boot-maven-plugin.version}</version>
-                </plugin>
-            </plugins>
-        </pluginManagement>
-    </build>
-
    <properties>
-        <feign.version>9.4.0</feign.version>
-        <spring-boot-maven-plugin.version>1.4.2.RELEASE</spring-boot-maven-plugin.version>
+        <feign.version>10.11</feign.version>
    </properties>

 </project>
@@ -6,8 +6,6 @@ import com.baeldung.feign.models.BookResource;
 import lombok.extern.slf4j.Slf4j;
 import org.junit.Before;
 import org.junit.Test;
-import org.junit.runner.RunWith;
-import org.junit.runners.JUnit4;

 import java.util.List;
 import java.util.UUID;
@@ -22,7 +20,6 @@ import static org.junit.Assert.assertTrue;
 * Consumes https://github.com/Baeldung/spring-hypermedia-api
 */
@Slf4j
-@RunWith(JUnit4.class)
 public class BookClientLiveTest {
    private BookClient bookClient;

@@ -4,6 +4,7 @@
    <modelVersion>4.0.0</modelVersion>
    <artifactId>httpclient-2</artifactId>
    <version>0.1-SNAPSHOT</version>
+    <name>httpclient-2</name>

    <parent>
        <groupId>com.baeldung</groupId>
@@ -13,6 +14,7 @@
    </parent>

    <dependencies>
+        <!-- http client -->
        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpclient</artifactId>
@@ -24,6 +26,19 @@
                </exclusion>
            </exclusions>
        </dependency>
+
+        <!-- rest template -->
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+            <version>${spring-boot.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <version>${spring-boot.version}</version>
+            <scope>test</scope>
+        </dependency>
    </dependencies>

    <build>
@@ -34,10 +49,24 @@
                <filtering>true</filtering>
            </resource>
        </resources>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>${maven-compiler-plugin.version}</version>
+                <configuration>
+                    <source>${maven.compiler.source.version}</source>
+                    <target>${maven.compiler.target.version}</target>
+                </configuration>
+            </plugin>
+        </plugins>
    </build>

    <properties>
        <httpclient.version>4.5.8</httpclient.version>
+        <maven.compiler.source.version>11</maven.compiler.source.version>
+        <maven.compiler.target.version>11</maven.compiler.target.version>
+        <spring-boot.version>2.1.7.RELEASE</spring-boot.version>
    </properties>

 </project>
@@ -0,0 +1,54 @@
+package com.baeldung.httpclient.cookies;
+
+import org.apache.http.client.CookieStore;
+import org.apache.http.client.methods.CloseableHttpResponse;
+import org.apache.http.client.methods.HttpGet;
+import org.apache.http.client.protocol.HttpClientContext;
+import org.apache.http.cookie.Cookie;
+import org.apache.http.impl.client.BasicCookieStore;
+import org.apache.http.impl.client.CloseableHttpClient;
+import org.apache.http.impl.client.HttpClients;
+import org.apache.http.impl.cookie.BasicClientCookie;
+import org.junit.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.IOException;
+
+import static org.junit.Assert.assertEquals;
+
+
+public class HttpClientGettingCookieValueUnitTest {
+    private static Logger log = LoggerFactory.getLogger(HttpClientGettingCookieValueUnitTest.class);
+
+    private static final String SAMPLE_URL = "http://www.baeldung.com/";
+
+    @Test
+    public final void whenSettingCustomCookieOnTheRequest_thenGettingTheSameCookieFromTheResponse() throws IOException {
+        HttpClientContext context = HttpClientContext.create();
+        context.setAttribute(HttpClientContext.COOKIE_STORE, createCustomCookieStore());
+
+        try (CloseableHttpClient httpClient = HttpClients.createDefault()) {
+            try (CloseableHttpResponse response = httpClient.execute(new HttpGet(SAMPLE_URL), context)) {
+                CookieStore cookieStore = context.getCookieStore();
+                Cookie customCookie = cookieStore.getCookies()
+                  .stream()
+                  .peek(cookie -> log.info("cookie name:{}", cookie.getName()))
+                  .filter(cookie -> "custom_cookie".equals(cookie.getName()))
+                  .findFirst()
+                  .orElseThrow(IllegalStateException::new);
+
+                assertEquals("test_value", customCookie.getValue());
+            }
+        }
+    }
+
+    private BasicCookieStore createCustomCookieStore() {
+        BasicCookieStore cookieStore = new BasicCookieStore();
+        BasicClientCookie cookie = new BasicClientCookie("custom_cookie", "test_value");
+        cookie.setDomain("baeldung.com");
+        cookie.setPath("/");
+        cookieStore.addCookie(cookie);
+        return cookieStore;
+    }
+}
@@ -0,0 +1,26 @@
+package com.baeldung.httpclient.readresponsebodystring;
+
+import org.apache.http.HttpEntity;
+import org.apache.http.client.methods.CloseableHttpResponse;
+import org.apache.http.client.methods.HttpGet;
+import org.apache.http.impl.client.CloseableHttpClient;
+import org.apache.http.impl.client.HttpClients;
+import org.apache.http.util.EntityUtils;
+import org.junit.Test;
+
+import java.io.IOException;
+
+public class ApacheHttpClientUnitTest {
+    public static final String DUMMY_URL = "https://postman-echo.com/get";
+
+    @Test
+    public void whenUseApacheHttpClient_thenCorrect() throws IOException {
+        HttpGet request = new HttpGet(DUMMY_URL);
+
+        try (CloseableHttpClient client = HttpClients.createDefault(); CloseableHttpResponse response = client.execute(request)) {
+            HttpEntity entity = response.getEntity();
+            String result = EntityUtils.toString(entity);
+            System.out.println("Response -> " + result);
+        }
+    }
+}
@@ -0,0 +1,29 @@
+package com.baeldung.httpclient.readresponsebodystring;
+
+import org.junit.Test;
+
+import java.io.IOException;
+import java.net.URI;
+import java.net.http.HttpClient;
+import java.net.http.HttpRequest;
+import java.net.http.HttpResponse;
+
+public class HttpClientUnitTest {
+    public static final String DUMMY_URL = "https://postman-echo.com/get";
+
+    @Test
+    public void whenUseHttpClient_thenCorrect() throws IOException, InterruptedException {
+        HttpClient client = HttpClient.newHttpClient();
+        HttpRequest request = HttpRequest.newBuilder().uri(URI.create(DUMMY_URL)).build();
+
+        // synchronous response
+        HttpResponse<String> response = client.send(request, HttpResponse.BodyHandlers.ofString());
+        System.out.println(response.body());
+
+        // asynchronous response
+        client.sendAsync(request, HttpResponse.BodyHandlers.ofString())
+            .thenApply(HttpResponse::body)
+            .thenAccept(System.out::println)
+            .join();
+    }
+}
@@ -0,0 +1,34 @@
+package com.baeldung.httpclient.readresponsebodystring;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.net.HttpURLConnection;
+import java.net.URL;
+
+public class HttpUrlConnectionUnitTest {
+
+    public static final String DUMMY_URL = "https://postman-echo.com/get";
+
+    @Test
+    public void whenUseHttpUrlConnection_thenCorrect() throws IOException {
+        HttpURLConnection connection = (HttpURLConnection) new URL(DUMMY_URL).openConnection();
+
+        InputStream inputStream = connection.getInputStream();
+
+        BufferedReader in = new BufferedReader(new InputStreamReader(inputStream));
+        StringBuilder response = new StringBuilder();
+        String currentLine;
+
+        while ((currentLine = in.readLine()) != null)
+            response.append(currentLine);
+
+        in.close();
+        Assert.assertNotNull(response.toString());
+        System.out.println("Response -> " + response.toString());
+    }
+}
@@ -0,0 +1,17 @@
+package com.baeldung.httpclient.readresponsebodystring;
+
+import org.junit.Test;
+import org.springframework.web.client.RestTemplate;
+
+public class SpringRestTemplateUnitTest {
+
+    public static final String DUMMY_URL = "https://postman-echo.com/get";
+
+    @Test
+    public void whenUseRestTemplate_thenCorrect() {
+        RestTemplate restTemplate = new RestTemplate();
+        String response = restTemplate.getForObject(DUMMY_URL, String.class);
+        System.out.println(response);
+    }
+
+}
@@ -23,6 +23,13 @@
            <artifactId>jackson-datatype-joda</artifactId>
            <version>${jackson.version}</version>
        </dependency>
+        <dependency>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-core</artifactId>
+            <version>${jackson.version}</version>
+        </dependency>
+
+
    </dependencies>

    <build>
@@ -60,8 +60,6 @@ public class CustomDeserializationUnitTest {
        String converted = objectMapper.writeValueAsString(now);
        // restore an instance of ZonedDateTime from String
        ZonedDateTime restored = objectMapper.readValue(converted, ZonedDateTime.class);
-        System.out.println("serialized: " + now);
-        System.out.println("restored: " + restored);
        assertThat(now, is(not(restored)));
    }

@@ -70,15 +68,14 @@ public class CustomDeserializationUnitTest {
        ObjectMapper objectMapper = new ObjectMapper();
        objectMapper.findAndRegisterModules();
        objectMapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
+        objectMapper.enable(SerializationFeature.WRITE_DATES_WITH_ZONE_ID);
        objectMapper.disable(DeserializationFeature.ADJUST_DATES_TO_CONTEXT_TIME_ZONE);
        // construct a new instance of ZonedDateTime
        ZonedDateTime now = ZonedDateTime.now(ZoneId.of("Europe/Berlin"));
        String converted = objectMapper.writeValueAsString(now);
        // restore an instance of ZonedDateTime from String
        ZonedDateTime restored = objectMapper.readValue(converted, ZonedDateTime.class);
-        System.out.println("serialized: " + now);
-        System.out.println("restored: " + restored);
-        assertThat(now, is(restored));
+        assertThat(restored, is(now));
    }

 }
@@ -24,7 +24,6 @@ public class CustomSerializationUnitTest {
    public final void whenSerializing_thenNoExceptions() throws JsonGenerationException, JsonMappingException, IOException {
        final Item myItem = new Item(1, "theItem", new User(2, "theUser"));
        final String serialized = new ObjectMapper().writeValueAsString(myItem);
-        System.out.println(serialized);
    }

    @Test
@@ -38,7 +37,6 @@ public class CustomSerializationUnitTest {
        mapper.registerModule(simpleModule);

        final String serialized = mapper.writeValueAsString(myItem);
-        System.out.println(serialized);
    }

    @Test
@@ -46,7 +44,6 @@ public class CustomSerializationUnitTest {
        final ItemWithSerializer myItem = new ItemWithSerializer(1, "theItem", new User(2, "theUser"));

        final String serialized = new ObjectMapper().writeValueAsString(myItem);
-        System.out.println(serialized);
    }

 }
@@ -37,7 +37,6 @@ public class IgnoreFieldsWithFilterUnitTest {
        assertThat(dtoAsString, not(containsString("intValue")));
        assertThat(dtoAsString, containsString("booleanValue"));
        assertThat(dtoAsString, containsString("stringValue"));
-        System.out.println(dtoAsString);
    }

    @Test
@@ -83,7 +82,6 @@ public class IgnoreFieldsWithFilterUnitTest {
        assertThat(dtoAsString, not(containsString("intValue")));
        assertThat(dtoAsString, containsString("booleanValue"));
        assertThat(dtoAsString, containsString("stringValue"));
-        System.out.println(dtoAsString);
    }

 }
@@ -51,8 +51,6 @@ public class JacksonDynamicIgnoreUnitTest {
        assertTrue(result.contains("john"));
        assertTrue(result.contains("address"));
        assertTrue(result.contains("usa"));
-
-        System.out.println("Not Hidden = " + result);
    }

    @Test
@@ -65,8 +63,6 @@ public class JacksonDynamicIgnoreUnitTest {
        assertTrue(result.contains("john"));
        assertFalse(result.contains("address"));
        assertFalse(result.contains("usa"));
-
-        System.out.println("Address Hidden = " + result);
    }

    @Test
@@ -76,8 +72,6 @@ public class JacksonDynamicIgnoreUnitTest {
        final String result = mapper.writeValueAsString(person);

        assertTrue(result.length() == 0);
-
-        System.out.println("All Hidden = " + result);
    }

    @Test
@@ -90,7 +84,5 @@ public class JacksonDynamicIgnoreUnitTest {
        final Person p3 = new Person("adam", ad3, false);

        final String result = mapper.writeValueAsString(Arrays.asList(p1, p2, p3));
-
-        System.out.println(result);
    }
 }
@@ -53,12 +53,12 @@
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-annotations</artifactId>
-            <version>2.11.0</version>
+            <version>${jackson.version}</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
-            <version>2.11.0</version>
+            <version>${jackson.version}</version>
        </dependency>
        <dependency>
            <groupId>com.io-informatics.oss</groupId>
@@ -7,22 +7,38 @@ import au.com.dius.pact.consumer.dsl.PactDslWithProvider;
 import au.com.dius.pact.model.RequestResponsePact;
 import org.junit.Rule;
 import org.junit.Test;
-import org.springframework.http.HttpEntity;
-import org.springframework.http.HttpHeaders;
-import org.springframework.http.HttpMethod;
-import org.springframework.http.MediaType;
-import org.springframework.http.ResponseEntity;
+import org.springframework.http.*;
 import org.springframework.web.client.RestTemplate;

+import java.io.IOException;
+import java.net.ServerSocket;
 import java.util.HashMap;
 import java.util.Map;
+import java.util.Random;

 import static org.assertj.core.api.Assertions.assertThat;

 public class PactConsumerDrivenContractUnitTest {

+    private static int getAvailablePort() {
+        return new Random()
+            .ints(6000, 9000)
+            .filter(PactConsumerDrivenContractUnitTest::isFree)
+            .findFirst()
+            .orElse(8080);
+    }
+
+    private static boolean isFree(int port) {
+        try {
+            new ServerSocket(port).close();
+            return true;
+        } catch (IOException e) {
+            return false;
+        }
+    }
+
    @Rule
-    public PactProviderRuleMk2 mockProvider = new PactProviderRuleMk2("test_provider", "localhost", 8080, this);
+    public PactProviderRuleMk2 mockProvider = new PactProviderRuleMk2("test_provider", "localhost", getAvailablePort(), this);

    @Pact(consumer = "test_consumer")
    public RequestResponsePact createPact(PactDslWithProvider builder) {
@@ -107,6 +107,12 @@
            <artifactId>renjin-script-engine</artifactId>
            <version>${renjin.version}</version>
        </dependency>
+        <!-- libphonenumber  -->
+        <dependency>
+            <groupId>com.googlecode.libphonenumber</groupId>
+            <artifactId>libphonenumber</artifactId>
+            <version>${libphonenumber.version}</version>
+        </dependency>        
    </dependencies>

    <repositories>
@@ -150,6 +156,7 @@
        <renjin.version>RELEASE</renjin.version>
        <rcaller.version>3.0</rcaller.version>
        <rserve.version>1.8.1</rserve.version>
+        <libphonenumber.version>8.12.9</libphonenumber.version>
    </properties>


@@ -0,0 +1,79 @@
+package com.baeldung.libphonenumber;
+
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+import org.junit.Test;
+
+import com.google.i18n.phonenumbers.NumberParseException;
+import com.google.i18n.phonenumbers.PhoneNumberUtil;
+import com.google.i18n.phonenumbers.PhoneNumberUtil.PhoneNumberType;
+import com.google.i18n.phonenumbers.Phonenumber.PhoneNumber;
+import com.google.i18n.phonenumbers.Phonenumber.PhoneNumber.CountryCodeSource;
+
+public class LibPhoneNumberUnitTest {
+
+    private static final PhoneNumberUtil phoneNumberUtil = PhoneNumberUtil.getInstance();
+
+    @Test
+    public void givenPhoneNumber_whenValid_thenOK() throws Exception {
+
+        PhoneNumber phone = phoneNumberUtil.parse("+911234567890", CountryCodeSource.UNSPECIFIED.name());
+
+        assertTrue(phoneNumberUtil.isValidNumber(phone));
+        assertTrue(phoneNumberUtil.isValidNumberForRegion(phone, "IN"));
+        assertFalse(phoneNumberUtil.isValidNumberForRegion(phone, "US"));
+        assertTrue(phoneNumberUtil.isValidNumber(phoneNumberUtil.getExampleNumber("IN")));
+    }
+
+    @Test
+    public void givenPhoneNumber_whenAlphaNumber_thenValid() {
+        assertTrue(phoneNumberUtil.isAlphaNumber("325-CARS"));
+        assertTrue(phoneNumberUtil.isAlphaNumber("0800 REPAIR"));
+        assertTrue(phoneNumberUtil.isAlphaNumber("1-800-MY-APPLE"));
+        assertTrue(phoneNumberUtil.isAlphaNumber("1-800-MY-APPLE.."));
+        assertFalse(phoneNumberUtil.isAlphaNumber("+876 1234-1234"));
+    }
+
+    @Test
+    public void givenPhoneNumber_whenPossibleForType_thenValid() {
+        PhoneNumber number = new PhoneNumber();
+        number.setCountryCode(54);
+
+        number.setNationalNumber(123456);
+        assertTrue(phoneNumberUtil.isPossibleNumberForType(number, PhoneNumberType.FIXED_LINE));
+        assertFalse(phoneNumberUtil.isPossibleNumberForType(number, PhoneNumberType.TOLL_FREE));
+
+        number.setNationalNumber(12345678901L);
+        assertFalse(phoneNumberUtil.isPossibleNumberForType(number, PhoneNumberType.FIXED_LINE));
+        assertTrue(phoneNumberUtil.isPossibleNumberForType(number, PhoneNumberType.MOBILE));
+        assertFalse(phoneNumberUtil.isPossibleNumberForType(number, PhoneNumberType.TOLL_FREE));
+    }
+
+    @Test
+    public void givenPhoneNumber_whenPossible_thenValid() {
+        PhoneNumber number = new PhoneNumber();
+        number.setCountryCode(1)
+            .setNationalNumber(123000L);
+        assertFalse(phoneNumberUtil.isPossibleNumber(number));
+        assertFalse(phoneNumberUtil.isPossibleNumber("+1 343 253 00000", "US"));
+        assertFalse(phoneNumberUtil.isPossibleNumber("(343) 253-00000", "US"));
+        assertFalse(phoneNumberUtil.isPossibleNumber("dial p for pizza", "US"));
+        assertFalse(phoneNumberUtil.isPossibleNumber("123-000", "US"));
+    }
+
+    @Test
+    public void givenPhoneNumber_whenNumberGeographical_thenValid() throws NumberParseException {
+
+        PhoneNumber phone = phoneNumberUtil.parse("+911234567890", "IN");
+        assertTrue(phoneNumberUtil.isNumberGeographical(phone));
+
+        phone = new PhoneNumber().setCountryCode(1)
+            .setNationalNumber(2530000L);
+        assertFalse(phoneNumberUtil.isNumberGeographical(phone));
+
+        phone = new PhoneNumber().setCountryCode(800)
+            .setNationalNumber(12345678L);
+        assertFalse(phoneNumberUtil.isNumberGeographical(phone));
+    }
+}
--- a/Show More
+++ b/Show More