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slavisa-baeldung
2017-05-04 21:18:11 +01:00
parent 52d32336e0 14f90c8636
commit cd16a66448
152 changed files with 3593 additions and 1271 deletions
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.travis.yml
+1 -1
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@@ -1,6 +1,6 @@
language: java
install: travis_wait 60 mvn -q test
install: travis_wait 60 mvn -q test -fae
before_script:
- echo "MAVEN_OPTS='-Xmx2048M -Xss128M -XX:MaxPermSize=2048M -XX:+CMSClassUnloadingEnabled -XX:+UseConcMarkSweepGC -XX:+TieredCompilation -XX:TieredStopAtLevel=1 -XX:-UseGCOverheadLimit'" > ~/.mavenrc
algorithms/pom.xml
+11 -1
View File
@@ -39,7 +39,6 @@
</dependencies>
<build>
<defaultGoal>install</defaultGoal>
<pluginManagement>
<plugins>
<plugin>
@@ -56,6 +55,17 @@
<artifactId>exec-maven-plugin</artifactId>
<version>${exec-maven-plugin.version}</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<configuration>
<excludes>
<exclude>**/*LongRunningUnitTest.java</exclude>
<exclude>**/*IntegrationTest.java</exclude>
</excludes>
</configuration>
</plugin>
</plugins>
</pluginManagement>
</build>
algorithms/src/test/java/algorithms/AntColonyOptimizationLongRunningUnitTest.java
+22
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@@ -0,0 +1,22 @@
package algorithms;
import org.junit.Assert;
import org.junit.Test;
import com.baeldung.algorithms.ga.ant_colony.AntColonyOptimization;
public class AntColonyOptimizationLongRunningUnitTest {
@Test
public void testGenerateRandomMatrix() {
AntColonyOptimization antTSP = new AntColonyOptimization(5);
Assert.assertNotNull(antTSP.generateRandomMatrix(5));
}
@Test
public void testStartAntOptimization() {
AntColonyOptimization antTSP = new AntColonyOptimization(5);
Assert.assertNotNull(antTSP.solve());
}
}
algorithms/src/test/java/algorithms/AntColonyOptimizationTest.java
-22
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@@ -1,22 +0,0 @@
package algorithms;
import org.junit.Assert;
import org.junit.Test;
import com.baeldung.algorithms.ga.ant_colony.AntColonyOptimization;
public class AntColonyOptimizationTest {
@Test
public void testGenerateRandomMatrix() {
AntColonyOptimization antTSP = new AntColonyOptimization(5);
Assert.assertNotNull(antTSP.generateRandomMatrix(5));
}
@Test
public void testStartAntOptimization() {
AntColonyOptimization antTSP = new AntColonyOptimization(5);
Assert.assertNotNull(antTSP.solve());
}
}
algorithms/src/test/java/algorithms/BinaryGeneticAlgorithmLongRunningUnitTest.java
+16
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@@ -0,0 +1,16 @@
package algorithms;
import org.junit.Assert;
import org.junit.Test;
import com.baeldung.algorithms.ga.binary.SimpleGeneticAlgorithm;
public class BinaryGeneticAlgorithmLongRunningUnitTest {
@Test
public void testGA() {
SimpleGeneticAlgorithm ga = new SimpleGeneticAlgorithm();
Assert.assertTrue(ga.runAlgorithm(50, "1011000100000100010000100000100111001000000100000100000000001111"));
}
}
algorithms/src/test/java/algorithms/BinaryGeneticAlgorithmUnitTest.java
-16
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@@ -1,16 +0,0 @@
package algorithms;
import org.junit.Assert;
import org.junit.Test;
import com.baeldung.algorithms.ga.binary.SimpleGeneticAlgorithm;
public class BinaryGeneticAlgorithmUnitTest {
@Test
public void testGA() {
SimpleGeneticAlgorithm ga = new SimpleGeneticAlgorithm();
Assert.assertTrue(ga.runAlgorithm(50, "1011000100000100010000100000100111001000000100000100000000001111"));
}
}
algorithms/src/test/java/algorithms/DijkstraAlgorithmTest.java → algorithms/src/test/java/algorithms/DijkstraAlgorithmLongRunningUnitTest.java
+86 -76
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@@ -1,76 +1,86 @@
package algorithms;
import org.junit.Test;
import com.baeldung.algorithms.ga.dijkstra.Dijkstra;
import com.baeldung.algorithms.ga.dijkstra.Graph;
import com.baeldung.algorithms.ga.dijkstra.Node;
import java.util.Arrays;
import java.util.List;
import static org.junit.Assert.assertTrue;
public class DijkstraAlgorithmTest {
@Test
public void whenSPPSolved_thenCorrect() {
Node nodeA = new Node("A");
Node nodeB = new Node("B");
Node nodeC = new Node("C");
Node nodeD = new Node("D");
Node nodeE = new Node("E");
Node nodeF = new Node("F");
nodeA.addDestination(nodeB, 10);
nodeA.addDestination(nodeC, 15);
nodeB.addDestination(nodeD, 12);
nodeB.addDestination(nodeF, 15);
nodeC.addDestination(nodeE, 10);
nodeD.addDestination(nodeE, 2);
nodeD.addDestination(nodeF, 1);
nodeF.addDestination(nodeE, 5);
Graph graph = new Graph();
graph.addNode(nodeA);
graph.addNode(nodeB);
graph.addNode(nodeC);
graph.addNode(nodeD);
graph.addNode(nodeE);
graph.addNode(nodeF);
graph = Dijkstra.calculateShortestPathFromSource(graph, nodeA);
List<Node> shortestPathForNodeB = Arrays.asList(nodeA);
List<Node> shortestPathForNodeC = Arrays.asList(nodeA);
List<Node> shortestPathForNodeD = Arrays.asList(nodeA, nodeB);
List<Node> shortestPathForNodeE = Arrays.asList(nodeA, nodeB, nodeD);
List<Node> shortestPathForNodeF = Arrays.asList(nodeA, nodeB, nodeD);
for (Node node : graph.getNodes()) {
switch (node.getName()) {
case "B":
assertTrue(node.getShortestPath().equals(shortestPathForNodeB));
break;
case "C":
assertTrue(node.getShortestPath().equals(shortestPathForNodeC));
break;
case "D":
assertTrue(node.getShortestPath().equals(shortestPathForNodeD));
break;
case "E":
assertTrue(node.getShortestPath().equals(shortestPathForNodeE));
break;
case "F":
assertTrue(node.getShortestPath().equals(shortestPathForNodeF));
break;
}
}
}
}
package algorithms;
import org.junit.Test;
import com.baeldung.algorithms.ga.dijkstra.Dijkstra;
import com.baeldung.algorithms.ga.dijkstra.Graph;
import com.baeldung.algorithms.ga.dijkstra.Node;
import java.util.Arrays;
import java.util.List;
import static org.junit.Assert.assertTrue;
public class DijkstraAlgorithmLongRunningUnitTest {
@Test
public void whenSPPSolved_thenCorrect() {
Node nodeA = new Node("A");
Node nodeB = new Node("B");
Node nodeC = new Node("C");
Node nodeD = new Node("D");
Node nodeE = new Node("E");
Node nodeF = new Node("F");
nodeA.addDestination(nodeB, 10);
nodeA.addDestination(nodeC, 15);
nodeB.addDestination(nodeD, 12);
nodeB.addDestination(nodeF, 15);
nodeC.addDestination(nodeE, 10);
nodeD.addDestination(nodeE, 2);
nodeD.addDestination(nodeF, 1);
nodeF.addDestination(nodeE, 5);
Graph graph = new Graph();
graph.addNode(nodeA);
graph.addNode(nodeB);
graph.addNode(nodeC);
graph.addNode(nodeD);
graph.addNode(nodeE);
graph.addNode(nodeF);
graph = Dijkstra.calculateShortestPathFromSource(graph, nodeA);
List<Node> shortestPathForNodeB = Arrays.asList(nodeA);
List<Node> shortestPathForNodeC = Arrays.asList(nodeA);
List<Node> shortestPathForNodeD = Arrays.asList(nodeA, nodeB);
List<Node> shortestPathForNodeE = Arrays.asList(nodeA, nodeB, nodeD);
List<Node> shortestPathForNodeF = Arrays.asList(nodeA, nodeB, nodeD);
for (Node node : graph.getNodes()) {
switch (node.getName()) {
case "B":
assertTrue(node
.getShortestPath()
.equals(shortestPathForNodeB));
break;
case "C":
assertTrue(node
.getShortestPath()
.equals(shortestPathForNodeC));
break;
case "D":
assertTrue(node
.getShortestPath()
.equals(shortestPathForNodeD));
break;
case "E":
assertTrue(node
.getShortestPath()
.equals(shortestPathForNodeE));
break;
case "F":
assertTrue(node
.getShortestPath()
.equals(shortestPathForNodeF));
break;
}
}
}
}
algorithms/src/test/java/algorithms/RtFiniteStateMachineTest.java → algorithms/src/test/java/algorithms/RtFiniteStateMachineLongRunningUnitTest.java
+14 -23
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@@ -1,38 +1,37 @@
package algorithms;
import static org.junit.Assert.*;
import org.junit.Test;
import com.baeldung.automata.*;
import org.junit.Test;
/**
* Tests for {@link RtFiniteStateMachine}
*/
public final class RtFiniteStateMachineTest {
import static org.junit.Assert.assertTrue;
public final class RtFiniteStateMachineLongRunningUnitTest {
@Test
public void acceptsSimplePair() {
String json = "{\"key\":\"value\"}";
FiniteStateMachine machine = this.buildJsonStateMachine();
for (int i=0;i<json.length();i++) {
for (int i = 0; i < json.length(); i++) {
machine = machine.switchState(String.valueOf(json.charAt(i)));
}
assertTrue(machine.canStop());
}
@Test
public void acceptsMorePairs() {
String json = "{\"key1\":\"value1\",\"key2\":\"value2\"}";
FiniteStateMachine machine = this.buildJsonStateMachine();
for (int i=0;i<json.length();i++) {
for (int i = 0; i < json.length(); i++) {
machine = machine.switchState(String.valueOf(json.charAt(i)));
}
assertTrue(machine.canStop());
}
@Test(expected = IllegalArgumentException.class)
public void missingColon() {
String json = "{\"key\"\"value\"}";
FiniteStateMachine machine = this.buildJsonStateMachine();
for (int i=0;i<json.length();i++) {
for (int i = 0; i < json.length(); i++) {
machine = machine.switchState(String.valueOf(json.charAt(i)));
}
}
@@ -56,20 +55,12 @@ public final class RtFiniteStateMachineTest {
second.with(new RtTransition("\"", third));
//Add transitions with chars 0-9 and a-z
for (int i = 0; i < 26; i++) {
if(i<10) {
third = third.with(
new RtTransition(String.valueOf(i), third)
);
sixth = sixth.with(
new RtTransition(String.valueOf(i), sixth)
);
if (i < 10) {
third = third.with(new RtTransition(String.valueOf(i), third));
sixth = sixth.with(new RtTransition(String.valueOf(i), sixth));
}
third = third.with(
new RtTransition(String.valueOf((char) ('a' + i)), third)
);
sixth = sixth.with(
new RtTransition(String.valueOf((char) ('a' + i)), sixth)
);
third = third.with(new RtTransition(String.valueOf((char) ('a' + i)), third));
sixth = sixth.with(new RtTransition(String.valueOf((char) ('a' + i)), sixth));
}
third.with(new RtTransition("\"", fourth));
fourth.with(new RtTransition(":", fifth));
algorithms/src/test/java/algorithms/SimulatedAnnealingTest.java → algorithms/src/test/java/algorithms/SimulatedAnnealingLongRunningUnitTest.java
+1 -1
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@@ -5,7 +5,7 @@ import org.junit.Test;
import com.baeldung.algorithms.ga.annealing.SimulatedAnnealing;
public class SimulatedAnnealingTest {
public class SimulatedAnnealingLongRunningUnitTest {
@Test
public void testSimulateAnnealing() {
algorithms/src/test/java/com/baeldung/algorithms/primechecker/BigIntegerPrimeCheckerTest.java
-28
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@@ -1,28 +0,0 @@
package com.baeldung.algorithms.primechecker;
import static org.junit.Assert.assertTrue;
import org.junit.Test;
import com.baeldung.algorithms.primechecker.BigIntegerPrimeChecker;
import com.baeldung.algorithms.primechecker.PrimeChecker;
public class BigIntegerPrimeCheckerTest {
BigIntegerPrimeChecker primeChecker = new BigIntegerPrimeChecker();
@Test
public void givenPrimeNumber_whenCheckIsPrime_thenTrue(){
assertTrue(primeChecker.isPrime(13l));
assertTrue(primeChecker.isPrime(1009L));
assertTrue(primeChecker.isPrime(74207281L));
}
@Test
public void givenNonPrimeNumber_whenCheckIsPrime_thenFalse(){
assertTrue(!primeChecker.isPrime(50L));
assertTrue(!primeChecker.isPrime(1001L));
assertTrue(!primeChecker.isPrime(74207282L));
}
}
algorithms/src/test/java/com/baeldung/algorithms/primechecker/BruteForcePrimeCheckerTest.java
-27
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@@ -1,27 +0,0 @@
package com.baeldung.algorithms.primechecker;
import org.junit.Test;
import com.baeldung.algorithms.primechecker.BruteForcePrimeChecker;
import static org.junit.Assert.*;
public class BruteForcePrimeCheckerTest {
BruteForcePrimeChecker primeChecker = new BruteForcePrimeChecker();
@Test
public void givenPrimeNumber_whenCheckIsPrime_thenTrue(){
assertTrue(primeChecker.isPrime(13));
assertTrue(primeChecker.isPrime(1009));
}
@Test
public void givenNonPrimeNumber_whenCheckIsPrime_thenFalse(){
assertTrue(!primeChecker.isPrime(50));
assertTrue(!primeChecker.isPrime(1001));
}
}
algorithms/src/test/java/com/baeldung/algorithms/primechecker/OptimisedPrimeCheckerTest.java
-26
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@@ -1,26 +0,0 @@
package com.baeldung.algorithms.primechecker;
import static org.junit.Assert.assertTrue;
import org.junit.Test;
import com.baeldung.algorithms.primechecker.OptimisedPrimeChecker;
import com.baeldung.algorithms.primechecker.PrimeChecker;
public class OptimisedPrimeCheckerTest {
OptimisedPrimeChecker primeChecker = new OptimisedPrimeChecker();
@Test
public void givenPrimeNumber_whenCheckIsPrime_thenTrue(){
assertTrue(primeChecker.isPrime(13));
assertTrue(primeChecker.isPrime(1009));
}
@Test
public void givenNonPrimeNumber_whenCheckIsPrime_thenFalse(){
assertTrue(!primeChecker.isPrime(50));
assertTrue(!primeChecker.isPrime(1001));
}
}
algorithms/src/test/java/com/baeldung/algorithms/primechecker/PrimeCheckerTest.java
+69
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@@ -0,0 +1,69 @@
package com.baeldung.algorithms.primechecker;
import org.junit.Test;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
public class PrimeCheckerTest {
private final BigIntegerPrimeChecker primeChecker = new BigIntegerPrimeChecker();
@Test
public void whenCheckIsPrime_thenTrue(){
assertTrue(primeChecker.isPrime(13l));
assertTrue(primeChecker.isPrime(1009L));
assertTrue(primeChecker.isPrime(74207281L));
}
@Test
public void whenCheckIsPrime_thenFalse(){
assertTrue(!primeChecker.isPrime(50L));
assertTrue(!primeChecker.isPrime(1001L));
assertTrue(!primeChecker.isPrime(74207282L));
}
private final BruteForcePrimeChecker bfPrimeChecker = new BruteForcePrimeChecker();
@Test
public void whenBFCheckIsPrime_thenTrue(){
assertTrue(bfPrimeChecker.isPrime(13));
assertTrue(bfPrimeChecker.isPrime(1009));
}
@Test
public void whenBFCheckIsPrime_thenFalse(){
assertFalse(bfPrimeChecker.isPrime(50));
assertFalse(bfPrimeChecker.isPrime(1001));
}
private final OptimisedPrimeChecker optimisedPrimeChecker = new OptimisedPrimeChecker();
@Test
public void whenOptCheckIsPrime_thenTrue(){
assertTrue(optimisedPrimeChecker.isPrime(13));
assertTrue(optimisedPrimeChecker.isPrime(1009));
}
@Test
public void whenOptCheckIsPrime_thenFalse(){
assertFalse(optimisedPrimeChecker.isPrime(50));
assertFalse(optimisedPrimeChecker.isPrime(1001));
}
private final PrimesPrimeChecker primesPrimeChecker = new PrimesPrimeChecker();
@Test
public void whenPrimesCheckIsPrime_thenTrue() {
assertTrue(primesPrimeChecker.isPrime(13));
assertTrue(primesPrimeChecker.isPrime(1009));
}
@Test
public void whenPrimesCheckIsPrime_thenFalse() {
assertFalse(primesPrimeChecker.isPrime(50));
assertFalse(primesPrimeChecker.isPrime(1001));
}
}
algorithms/src/test/java/com/baeldung/algorithms/primechecker/PrimesPrimeCheckerTest.java
-25
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@@ -1,25 +0,0 @@
package com.baeldung.algorithms.primechecker;
import static org.junit.Assert.assertTrue;
import org.junit.Test;
import com.baeldung.algorithms.primechecker.PrimeChecker;
import com.baeldung.algorithms.primechecker.PrimesPrimeChecker;
public class PrimesPrimeCheckerTest {
PrimesPrimeChecker primeChecker = new PrimesPrimeChecker();
@Test
public void givenPrimeNumber_whenCheckIsPrime_thenTrue() {
assertTrue(primeChecker.isPrime(13));
assertTrue(primeChecker.isPrime(1009));
}
@Test
public void givenNonPrimeNumber_whenCheckIsPrime_thenFalse() {
assertTrue(!primeChecker.isPrime(50));
assertTrue(!primeChecker.isPrime(1001));
}
}
core-java/README.md
+2
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@@ -98,3 +98,5 @@
- [Quick Guide to the Java StringTokenizer](http://www.baeldung.com/java-stringtokenizer)
- [JVM Log Forging](http://www.baeldung.com/jvm-log-forging)
- [Guide to sun.misc.Unsafe](http://www.baeldung.com/java-unsafe)
- [HashSet and TreeSet Comparison](http://www.baeldung.com/java-hashset-vs-treeset)
- [How to Perform a Simple HTTP Request in Java](http://www.baeldung.com/java-http-request)
core-java/pom.xml
+11 -61
View File
@@ -98,6 +98,13 @@
<version>${lombok.version}</version>
<scope>provided</scope>
</dependency>
<!-- mysql -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql.version}</version>
</dependency>
<!-- test scoped -->
@@ -135,13 +142,6 @@
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.testng</groupId>
<artifactId>testng</artifactId>
<version>${testng.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-core</artifactId>
@@ -177,37 +177,6 @@
</exclusion>
</exclusions>
</dependency>
<!-- JDO -->
<dependency>
<groupId>org.datanucleus</groupId>
<artifactId>javax.jdo</artifactId>
<version>3.2.0-m6</version>
</dependency>
<dependency>
<groupId>org.datanucleus</groupId>
<artifactId>datanucleus-core</artifactId>
<version>5.1.0-m1</version>
</dependency>
<dependency>
<groupId>org.datanucleus</groupId>
<artifactId>datanucleus-api-jdo</artifactId>
<version>5.1.0-m1</version>
</dependency>
<dependency>
<groupId>org.datanucleus</groupId>
<artifactId>datanucleus-rdbms</artifactId>
<version>5.1.0-m1</version>
</dependency>
<dependency>
<groupId>org.datanucleus</groupId>
<artifactId>datanucleus-maven-plugin</artifactId>
<version>5.0.2</version>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<version>1.4.194</version>
</dependency>
<dependency>
<groupId>org.owasp.esapi</groupId>
@@ -250,6 +219,7 @@
<exclude>**/*IntegrationTest.java</exclude>
<exclude>**/*LongRunningUnitTest.java</exclude>
<exclude>**/*ManualTest.java</exclude>
<exclude>**/JdbcTest.java</exclude>
</excludes>
<testFailureIgnore>true</testFailureIgnore>
</configuration>
@@ -358,29 +328,6 @@
</execution>
</executions>
</plugin>
<!-- JDO Plugin -->
<plugin>
<groupId>org.datanucleus</groupId>
<artifactId>datanucleus-maven-plugin</artifactId>
<version>5.0.2</version>
<configuration>
<api>JDO</api>
<props>${basedir}/datanucleus.properties</props>
<log4jConfiguration>${basedir}/log4j.properties</log4jConfiguration>
<verbose>true</verbose>
</configuration>
<executions>
<execution>
<phase>process-classes</phase>
<goals>
<goal>enhance</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
@@ -427,6 +374,9 @@
<!-- logging -->
<org.slf4j.version>1.7.21</org.slf4j.version>
<logback.version>1.1.7</logback.version>
<!-- mysql -->
<mysql.version>6.0.6</mysql.version>
<!-- util -->
<guava.version>21.0</guava.version>
core-java/src/main/java/com/baeldung/concurrent/skiplist/EventWindowSort.java
+6 -13
View File
@@ -4,17 +4,10 @@ import java.time.ZonedDateTime;
import java.util.Comparator;
import java.util.concurrent.ConcurrentNavigableMap;
import java.util.concurrent.ConcurrentSkipListMap;
import java.util.function.ToLongFunction;
public class EventWindowSort {
private final ConcurrentSkipListMap<ZonedDateTime, String> events = new ConcurrentSkipListMap<>(Comparator.comparingLong(new ToLongFunction<ZonedDateTime>() {
@Override
public long applyAsLong(ZonedDateTime value) {
return value
.toInstant()
.toEpochMilli();
}
}));
private final ConcurrentSkipListMap<ZonedDateTime, String> events
= new ConcurrentSkipListMap<>(Comparator.comparingLong(value -> value.toInstant().toEpochMilli()));
public void acceptEvent(Event event) {
events.put(event.getEventTime(), event.getContent());
@@ -22,14 +15,14 @@ public class EventWindowSort {
public ConcurrentNavigableMap<ZonedDateTime, String> getEventsFromLastMinute() {
return events.tailMap(ZonedDateTime
.now()
.minusMinutes(1));
.now()
.minusMinutes(1));
}
public ConcurrentNavigableMap<ZonedDateTime, String> getEventsOlderThatOneMinute() {
return events.headMap(ZonedDateTime
.now()
.minusMinutes(1));
.now()
.minusMinutes(1));
}
}
core-java/src/main/java/com/baeldung/concurrent/sleepwait/ThreadA.java
+27
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@@ -0,0 +1,27 @@
package com.baeldung.concurrent.sleepwait;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/***
* Example of waking up a waiting thread
*/
public class ThreadA {
private static final Logger LOG = LoggerFactory.getLogger(ThreadA.class);
private static final ThreadB b = new ThreadB();
public static void main(String... args) throws InterruptedException {
b.start();
synchronized (b) {
while (b.sum == 0) {
LOG.debug("Waiting for ThreadB to complete...");
b.wait();
}
LOG.debug("ThreadB has completed. Sum from that thread is: " + b.sum);
}
}
}
core-java/src/main/java/com/baeldung/concurrent/sleepwait/ThreadB.java
+20
View File
@@ -0,0 +1,20 @@
package com.baeldung.concurrent.sleepwait;
/***
* Example of waking up a waiting thread
*/
class ThreadB extends Thread {
int sum;
@Override
public void run() {
synchronized (this) {
int i = 0;
while (i < 100000) {
sum += i;
i++;
}
notify();
}
}
}
core-java/src/main/java/com/baeldung/concurrent/sleepwait/WaitSleepExample.java
+29
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@@ -0,0 +1,29 @@
package com.baeldung.concurrent.sleepwait;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/***
* Example of wait() and sleep() methods
*/
public class WaitSleepExample {
private static final Logger LOG = LoggerFactory.getLogger(WaitSleepExample.class);
private static final Object LOCK = new Object();
public static void main(String... args) throws InterruptedException {
sleepWaitInSyncronizedBlocks();
}
private static void sleepWaitInSyncronizedBlocks() throws InterruptedException {
Thread.sleep(1000); // called on the thread
LOG.debug("Thread '" + Thread.currentThread().getName() + "' is woken after sleeping for 1 second");
synchronized (LOCK) {
LOCK.wait(1000); // called on the object, synchronization required
LOG.debug("Object '" + LOCK + "' is woken after waiting for 1 second");
}
}
}
core-java/src/main/java/com/baeldung/dirmonitoring/DirectoryMonitoringExample.java
+10 -5
View File
@@ -1,14 +1,19 @@
package com.baeldung.dirmonitoring;
import java.io.File;
import org.apache.commons.io.monitor.FileAlterationListener;
import org.apache.commons.io.monitor.FileAlterationListenerAdaptor;
import org.apache.commons.io.monitor.FileAlterationMonitor;
import org.apache.commons.io.monitor.FileAlterationObserver;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.File;
public class DirectoryMonitoringExample {
private static final Logger LOG = LoggerFactory.getLogger(DirectoryMonitoringExample.class);
public static final int POLL_INTERVAL = 500;
public static void main(String[] args) throws Exception {
@@ -17,17 +22,17 @@ public class DirectoryMonitoringExample {
FileAlterationListener listener = new FileAlterationListenerAdaptor() {
@Override
public void onFileCreate(File file) {
System.out.println("File: " + file.getName() + " created");
LOG.debug("File: " + file.getName() + " created");
}
@Override
public void onFileDelete(File file) {
System.out.println("File: " + file.getName() + " deleted");
LOG.debug("File: " + file.getName() + " deleted");
}
@Override
public void onFileChange(File file) {
System.out.println("File: " + file.getName() + " changed");
LOG.debug("File: " + file.getName() + " changed");
}
};
observer.addListener(listener);
core-java/src/main/java/com/baeldung/doublecolon/MacbookPro.java
+8 -3
View File
@@ -1,9 +1,14 @@
package com.baeldung.doublecolon;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.function.Function;
public class MacbookPro extends Computer {
private static final Logger LOG = LoggerFactory.getLogger(MacbookPro.class);
public MacbookPro(int age, String color) {
super(age, color);
}
@@ -14,12 +19,12 @@ public class MacbookPro extends Computer {
@Override
public void turnOnPc() {
System.out.println("MacbookPro turned on");
LOG.debug("MacbookPro turned on");
}
@Override
public void turnOffPc() {
System.out.println("MacbookPro turned off");
LOG.debug("MacbookPro turned off");
}
@Override
@@ -27,7 +32,7 @@ public class MacbookPro extends Computer {
Function<Double, Double> function = super::calculateValue;
final Double pcValue = function.apply(initialValue);
System.out.println("First value is:" + pcValue);
LOG.debug("First value is:" + pcValue);
return pcValue + (initialValue / 10);
}
core-java/src/main/java/com/baeldung/dynamicproxy/DynamicInvocationHandler.java
+19
View File
@@ -0,0 +1,19 @@
package com.baeldung.dynamicproxy;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
public class DynamicInvocationHandler implements InvocationHandler {
private static Logger LOGGER = LoggerFactory.getLogger(DynamicInvocationHandler.class);
@Override
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
LOGGER.info("Invoked method: {}", method.getName());
return 42;
}
}
core-java/src/main/java/com/baeldung/dynamicproxy/TimingDynamicInvocationHandler.java
+36
View File
@@ -0,0 +1,36 @@
package com.baeldung.dynamicproxy;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.Map;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class TimingDynamicInvocationHandler implements InvocationHandler {
private static Logger LOGGER = LoggerFactory.getLogger(TimingDynamicInvocationHandler.class);
private final Map<String, Method> methods = new HashMap<>();
private Object target;
public TimingDynamicInvocationHandler(Object target) {
this.target = target;
for(Method method: target.getClass().getDeclaredMethods()) {
this.methods.put(method.getName(), method);
}
}
@Override
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
long start = System.nanoTime();
Object result = methods.get(method.getName()).invoke(target, args);
long elapsed = System.nanoTime() - start;
LOGGER.info("Executing {} finished in {} ns", method.getName(), elapsed);
return result;
}
}
core-java/src/main/java/com/baeldung/exceptions/StackTraceToString.java
+30
View File
@@ -0,0 +1,30 @@
package com.baeldung.exceptions;
import org.apache.commons.lang3.exception.ExceptionUtils;
import java.io.PrintWriter;
import java.io.StringWriter;
public class StackTraceToString {
public static void main(String[] args) {
// Convert a StackTrace to String using core java
try {
throw new NullPointerException();
} catch (Exception e) {
StringWriter sw = new StringWriter();
PrintWriter pw = new PrintWriter(sw);
e.printStackTrace(pw);
System.out.println(sw.toString());
}
// Convert a StackTrace to String using Apache Commons
try {
throw new IndexOutOfBoundsException();
} catch (Exception e) {
System.out.println(ExceptionUtils.getStackTrace(e));
}
}
}
core-java/src/main/java/com/baeldung/http/ParameterStringBuilder.java
+21
View File
@@ -0,0 +1,21 @@
package com.baeldung.http;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.util.Map;
public class ParameterStringBuilder {
public static String getParamsString(Map<String, String> params) throws UnsupportedEncodingException {
StringBuilder result = new StringBuilder();
for (Map.Entry<String, String> entry : params.entrySet()) {
result.append(URLEncoder.encode(entry.getKey(), "UTF-8"));
result.append("=");
result.append(URLEncoder.encode(entry.getValue(), "UTF-8"));
result.append("&");
}
String resultString = result.toString();
return resultString.length() > 0 ? resultString.substring(0, resultString.length() - 1) : resultString;
}
}
core-java/src/main/java/com/baeldung/java/map/MyKey.java
+7 -2
View File
@@ -1,6 +1,11 @@
package com.baeldung.java.map;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class MyKey {
private static final Logger LOG = LoggerFactory.getLogger(MyKey.class);
private String name;
private int id;
@@ -27,7 +32,7 @@ public class MyKey {
@Override
public int hashCode() {
System.out.println("Calling hashCode()");
LOG.debug("Calling hashCode()");
return id;
}
@@ -38,7 +43,7 @@ public class MyKey {
@Override
public boolean equals(Object obj) {
System.out.println("Calling equals() for key: " + obj);
LOG.debug("Calling equals() for key: " + obj);
if (this == obj)
return true;
if (obj == null)
core-java/src/main/java/com/baeldung/jdbc/Employee.java
+51
View File
@@ -0,0 +1,51 @@
package com.baeldung.jdbc;
public class Employee {
private int id;
private String name;
private String position;
private double salary;
public Employee() {
}
public Employee(int id, String name, double salary, String position) {
this.id = id;
this.name = name;
this.salary = salary;
this.position = position;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public double getSalary() {
return salary;
}
public void setSalary(double salary) {
this.salary = salary;
}
public String getPosition() {
return position;
}
public void setPosition(String position) {
this.position = position;
}
}
core-java/src/main/java/com/baeldung/jdo/GuideToJDO.java
-143
View File
@@ -1,143 +0,0 @@
package com.baeldung.jdo;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;
import java.util.Random;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.jdo.PersistenceManager;
import javax.jdo.PersistenceManagerFactory;
import javax.jdo.Query;
import javax.jdo.Transaction;
import org.datanucleus.api.jdo.JDOPersistenceManagerFactory;
import org.datanucleus.metadata.PersistenceUnitMetaData;
public class GuideToJDO {
private static final Logger LOGGER = Logger.getLogger(GuideToJDO.class.getName());
private Random rnd = new Random();
private PersistenceUnitMetaData pumd;
public static void main(String[] args) {
new GuideToJDO();
}
public GuideToJDO() {
CreateProperties();
CreateProducts();
ListProducts();
UpdateProducts();
ListProducts();
DeleteProducts();
ListProducts();
}
public void CreateProperties(){
pumd = new PersistenceUnitMetaData("dynamic-unit", "RESOURCE_LOCAL", null);
pumd.addClassName("com.baeldung.jdo.Product");
pumd.setExcludeUnlistedClasses();
pumd.addProperty("javax.jdo.option.ConnectionDriverName", "org.h2.Driver");
pumd.addProperty("javax.jdo.option.ConnectionURL", "jdbc:h2:mem:mypersistence");
pumd.addProperty("javax.jdo.option.ConnectionUserName", "sa");
pumd.addProperty("javax.jdo.option.ConnectionPassword", "");
pumd.addProperty("datanucleus.autoCreateSchema", "true");
}
public void CreateProducts() {
PersistenceManagerFactory pmf = new JDOPersistenceManagerFactory(pumd, null);
PersistenceManager pm = pmf.getPersistenceManager();
Transaction tx = pm.currentTransaction();
try {
tx.begin();
Product product = new Product("Tablet", 80.0);
pm.makePersistent(product);
Product product2 = new Product("Phone", 20.0);
pm.makePersistent(product2);
Product product3 = new Product("Laptop", 200.0);
pm.makePersistent(product3);
for (int i = 0; i < 100; i++) {
String nam = "Product-" + i;
double price = rnd.nextDouble();
Product productx = new Product(nam, price);
pm.makePersistent(productx);
}
tx.commit();
} finally {
if (tx.isActive()) {
tx.rollback();
}
pm.close();
}
}
@SuppressWarnings("rawtypes")
public void UpdateProducts(){
PersistenceManagerFactory pmf = new JDOPersistenceManagerFactory(pumd, null);
PersistenceManager pm = pmf.getPersistenceManager();
Transaction tx = pm.currentTransaction();
try {
tx.begin();
Query query = pm.newQuery(Product.class, "name == \"Phone\"");
Collection result = (Collection) query.execute();
Product product = (Product) result.iterator().next();
product.setName("Android Phone");
tx.commit();
} finally {
if (tx.isActive()) {
tx.rollback();
}
pm.close();
}
}
@SuppressWarnings("rawtypes")
public void DeleteProducts(){
PersistenceManagerFactory pmf = new JDOPersistenceManagerFactory(pumd, null);
PersistenceManager pm = pmf.getPersistenceManager();
Transaction tx = pm.currentTransaction();
try {
tx.begin();
Query query = pm.newQuery(Product.class, "name == \"Android Phone\"");
Collection result = (Collection) query.execute();
Product product = (Product) result.iterator().next();
pm.deletePersistent(product);
tx.commit();
} finally {
if (tx.isActive()) {
tx.rollback();
}
pm.close();
}
}
@SuppressWarnings({ "rawtypes", "unchecked" })
public void ListProducts() {
PersistenceManagerFactory pmf = new JDOPersistenceManagerFactory(pumd, null);
PersistenceManager pm = pmf.getPersistenceManager();
Transaction tx = pm.currentTransaction();
try {
tx.begin();
Query q = pm.newQuery("SELECT FROM " + Product.class.getName() + " WHERE price > 10");
List<Product> products = (List<Product>) q.execute();
Iterator<Product> iter = products.iterator();
while (iter.hasNext()) {
Product p = iter.next();
LOGGER.log(Level.WARNING, "Product name: {0} - Price: {1}", new Object[] { p.name, p.price });
}
LOGGER.log(Level.INFO, "--------------------------------------------------------------");
tx.commit();
} finally {
if (tx.isActive()) {
tx.rollback();
}
pm.close();
}
}
}
core-java/src/main/java/com/baeldung/jmx/Game.java
+8 -3
View File
@@ -1,23 +1,28 @@
package com.baeldung.jmx;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class Game implements GameMBean {
private static final Logger LOG = LoggerFactory.getLogger(Game.class);
private String playerName;
@Override
public void playFootball(String clubName) {
System.out.println(this.playerName + " playing football for " + clubName);
LOG.debug(this.playerName + " playing football for " + clubName);
}
@Override
public String getPlayerName() {
System.out.println("Return playerName " + this.playerName);
LOG.debug("Return playerName " + this.playerName);
return playerName;
}
@Override
public void setPlayerName(String playerName) {
System.out.println("Set playerName to value " + playerName);
LOG.debug("Set playerName to value " + playerName);
this.playerName = playerName;
}

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