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

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This commit is contained in:
Seun Matt
2017-08-15 05:39:51 +01:00
parent 57ea6593ee bcc122b724
commit 4f34159616
212 changed files with 4443 additions and 637 deletions
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apache-velocity/src/main/webapp/WEB-INF/velocity.properties
+1 -1
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@@ -1,4 +1,4 @@
resource.loader=webapp
webapp.resource.loader.class=org.apache.velocity.tools.view.WebappResourceLoader
webapp.resource.loader.path = .
webapp.resource.loader.path =
webapp.resource.loader.cache = true
bootique/config.yml
+11
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@@ -0,0 +1,11 @@
log:
level: warn
appenders:
- type: file
logFormat: '%c{20}: %m%n'
file: /home/logger.log
jetty:
context: /hello
connector:
port: 10001
bootique/dependency-reduced-pom.xml
+50
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@@ -0,0 +1,50 @@
<?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/maven-v4_0_0.xsd">
<parent>
<artifactId>bootique-parent</artifactId>
<groupId>io.bootique.parent</groupId>
<version>0.12</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<groupId>com.baeldung.bootique</groupId>
<artifactId>bootique</artifactId>
<name>bootique</name>
<version>1.0-SNAPSHOT</version>
<url>http://maven.apache.org</url>
<build>
<plugins>
<plugin>
<artifactId>maven-shade-plugin</artifactId>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>io.bootique</groupId>
<artifactId>bootique-test</artifactId>
<version>0.23</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>io.bootique.bom</groupId>
<artifactId>bootique-bom</artifactId>
<version>0.23</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<properties>
<main.class>com.baeldung.bootique.App</main.class>
</properties>
</project>
bootique/pom.xml
+66
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@@ -0,0 +1,66 @@
<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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.baeldung.bootique</groupId>
<artifactId>bootique</artifactId>
<packaging>jar</packaging>
<version>1.0-SNAPSHOT</version>
<name>bootique</name>
<url>http://maven.apache.org</url>
<properties>
<main.class>com.baeldung.bootique.App</main.class>
</properties>
<parent>
<groupId>io.bootique.parent</groupId>
<artifactId>bootique-parent</artifactId>
<version>0.12</version>
</parent>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>io.bootique.bom</groupId>
<artifactId>bootique-bom</artifactId>
<version>0.23</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>io.bootique.jersey</groupId>
<artifactId>bootique-jersey</artifactId>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>io.bootique.logback</groupId>
<artifactId>bootique-logback</artifactId>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>io.bootique</groupId>
<artifactId>bootique-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
bootique/src/main/java/com/baeldung/bootique/App.java
+41
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@@ -0,0 +1,41 @@
package com.baeldung.bootique;
import com.baeldung.bootique.module.ModuleBinder;
import com.baeldung.bootique.router.IndexController;
import com.baeldung.bootique.router.SaveController;
import com.google.inject.Module;
import io.bootique.Bootique;
import io.bootique.jersey.JerseyModule;
import io.bootique.log.BootLogger;
import java.util.function.Supplier;
public class App {
public static void main(String[] args) {
Module module = binder -> JerseyModule.extend(binder).addResource(IndexController.class)
.addResource(SaveController.class);
Bootique.app(args).module(module).module(ModuleBinder.class).bootLogger(new BootLogger() {
@Override
public void trace(Supplier<String> arg0) {
// ...
}
@Override
public void stdout(String arg0) {
// ...
}
@Override
public void stderr(String arg0, Throwable arg1) {
// ...
}
@Override
public void stderr(String arg0) {
// ...
}
}).autoLoadModules().exec();
}
}
bootique/src/main/java/com/baeldung/bootique/module/ModuleBinder.java
+15
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@@ -0,0 +1,15 @@
package com.baeldung.bootique.module;
import com.baeldung.bootique.service.HelloService;
import com.baeldung.bootique.service.impl.HelloServiceImpl;
import com.google.inject.Binder;
import com.google.inject.Module;
public class ModuleBinder implements Module {
@Override
public void configure(Binder binder) {
binder.bind(HelloService.class).to(HelloServiceImpl.class);
}
}
bootique/src/main/java/com/baeldung/bootique/module/ModuleProvider.java
+13
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@@ -0,0 +1,13 @@
package com.baeldung.bootique.module;
import com.google.inject.Module;
import io.bootique.BQModuleProvider;
public class ModuleProvider implements BQModuleProvider {
@Override
public Module module() {
return new ModuleBinder();
}
}
bootique/src/main/java/com/baeldung/bootique/router/IndexController.java
+14
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@@ -0,0 +1,14 @@
package com.baeldung.bootique.router;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
@Path("/")
public class IndexController {
@GET
public String index() {
return "Hello, baeldung!";
}
}
bootique/src/main/java/com/baeldung/bootique/router/SaveController.java
+20
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@@ -0,0 +1,20 @@
package com.baeldung.bootique.router;
import com.baeldung.bootique.service.HelloService;
import com.google.inject.Inject;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
@Path("/save")
public class SaveController {
@Inject
HelloService helloService;
@POST
public String save() {
return "Data Saved!";
}
}
bootique/src/main/java/com/baeldung/bootique/service/HelloService.java
+7
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@@ -0,0 +1,7 @@
package com.baeldung.bootique.service;
public interface HelloService {
boolean save();
}
bootique/src/main/java/com/baeldung/bootique/service/impl/HelloServiceImpl.java
+12
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@@ -0,0 +1,12 @@
package com.baeldung.bootique.service.impl;
import com.baeldung.bootique.service.HelloService;
public class HelloServiceImpl implements HelloService {
@Override
public boolean save() {
return true;
}
}
bootique/src/main/resources/META-INF/services/io.bootique.BQModuleProvider
+1
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@@ -0,0 +1 @@
com.baeldung.bootique.module.ModuleProvider
bootique/src/test/java/com/baeldung/bootique/AppTest.java
+27
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@@ -0,0 +1,27 @@
package com.baeldung.bootique;
import com.baeldung.bootique.service.HelloService;
import io.bootique.BQRuntime;
import io.bootique.test.junit.BQDaemonTestFactory;
import io.bootique.test.junit.BQTestFactory;
import org.junit.Rule;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
public class AppTest {
@Rule
public BQTestFactory bqTestFactory = new BQTestFactory();
@Rule
public BQDaemonTestFactory bqDaemonTestFactory = new BQDaemonTestFactory();
@Test
public void givenService_expectBoolen() {
BQRuntime runtime = bqTestFactory.app("--server").autoLoadModules().createRuntime();
HelloService service = runtime.getInstance(HelloService.class);
assertEquals(true, service.save());
}
}
core-java-9/src/main/java/com/baeldung/java9/process/ServiceMain.java
+1 -1
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@@ -6,7 +6,7 @@ public class ServiceMain {
public static void main(String[] args) throws InterruptedException {
ProcessHandle thisProcess = ProcessHandle.current();
long pid = thisProcess.getPid();
long pid = thisProcess.pid();
Optional<String[]> opArgs = Optional.ofNullable(args);
String procName = opArgs.map(str -> str.length > 0 ? str[0] : null).orElse(System.getProperty("sun.java.command"));
core-java-9/src/test/java/com/baeldung/java9/language/Java9ObjectsAPIUnitTest.java
+86
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@@ -0,0 +1,86 @@
package com.baeldung.java9.language;
import org.junit.Test;
import java.util.Collections;
import java.util.List;
import java.util.Objects;
import static org.hamcrest.Matchers.*;
import static org.hamcrest.MatcherAssert.assertThat;
public class Java9ObjectsAPIUnitTest {
private List<String> aMethodReturningNullList(){
return null;
}
@Test
public void givenNullObject_whenRequireNonNullElse_thenElse(){
List<String> aList = Objects.<List>requireNonNullElse(
aMethodReturningNullList(), Collections.EMPTY_LIST);
assertThat(aList, is(Collections.EMPTY_LIST));
}
private List<String> aMethodReturningNonNullList(){
return List.of("item1", "item2");
}
@Test
public void givenObject_whenRequireNonNullElse_thenObject(){
List<String> aList = Objects.<List>requireNonNullElse(
aMethodReturningNonNullList(), Collections.EMPTY_LIST);
assertThat(aList, is(List.of("item1", "item2")));
}
@Test(expected = NullPointerException.class)
public void givenNull_whenRequireNonNullElse_thenException(){
Objects.<List>requireNonNullElse(null, null);
}
@Test
public void givenObject_whenRequireNonNullElseGet_thenObject(){
List<String> aList = Objects.<List>requireNonNullElseGet(null, List::of);
assertThat(aList, is(List.of()));
}
@Test
public void givenNumber_whenInvokeCheckIndex_thenNumber(){
int length = 5;
assertThat(Objects.checkIndex(4, length), is(4));
}
@Test(expected = IndexOutOfBoundsException.class)
public void givenOutOfRangeNumber_whenInvokeCheckIndex_thenException(){
int length = 5;
Objects.checkIndex(5, length);
}
@Test
public void givenSubRange_whenCheckFromToIndex_thenNumber(){
int length = 6;
assertThat(Objects.checkFromToIndex(2,length,length), is(2));
}
@Test(expected = IndexOutOfBoundsException.class)
public void givenInvalidSubRange_whenCheckFromToIndex_thenException(){
int length = 6;
Objects.checkFromToIndex(2,7,length);
}
@Test
public void givenSubRange_whenCheckFromIndexSize_thenNumber(){
int length = 6;
assertThat(Objects.checkFromIndexSize(2,3,length), is(2));
}
@Test(expected = IndexOutOfBoundsException.class)
public void givenInvalidSubRange_whenCheckFromIndexSize_thenException(){
int length = 6;
Objects.checkFromIndexSize(2, 6, length);
}
}
core-java/hashcode/pom.xml
-39
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@@ -1,39 +0,0 @@
<?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">
<modelVersion>4.0.0</modelVersion>
<groupId>com.baeldung.hashcode</groupId>
<artifactId>hashcode</artifactId>
<version>1.0</version>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.25</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-simple</artifactId>
<version>1.7.25</version>
</dependency>
</dependencies>
</project>
core-java/hashcode/src/main/java/com/baeldung/application/Application.java
-23
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@@ -1,23 +0,0 @@
package com.baeldung.application;
import com.baeldung.entities.User;
import java.util.HashMap;
import java.util.Map;
public class Application {
public static void main(String[] args) {
Map<User, User> users = new HashMap<>();
User user1 = new User(1L, "John", "[email protected]");
User user2 = new User(2L, "Jennifer", "[email protected]");
User user3 = new User(3L, "Mary", "[email protected]");
users.put(user1, user1);
users.put(user2, user2);
users.put(user3, user3);
if (users.containsKey(user1)) {
System.out.print("User found in the collection");
}
}
}
core-java/hashcode/src/main/java/com/baeldung/entities/User.java
-38
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@@ -1,38 +0,0 @@
package com.baeldung.entities;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class User {
private final Logger logger = LoggerFactory.getLogger(User.class);
private long id;
private String name;
private String email;
public User(long id, String name, String email) {
this.id = id;
this.name = name;
this.email = email;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null) return false;
if (this.getClass() != o.getClass()) return false;
User user = (User) o;
return id != user.id && (!name.equals(user.name) && !email.equals(user.email));
}
@Override
public int hashCode() {
int hash = 7;
hash = 31 * hash + (int) id;
hash = 31 * hash + (name == null ? 0 : name.hashCode());
hash = 31 * hash + (email == null ? 0 : email.hashCode());
logger.info("hashCode() method called - Computed hash: " + hash);
return hash;
}
// getters and setters here
}
core-java/hashcode/src/test/java/com/baeldung/application/ApplicationTest.java
-30
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@@ -1,30 +0,0 @@
package com.baeldung.application;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import java.io.ByteArrayOutputStream;
import java.io.PrintStream;
import static org.junit.Assert.assertEquals;
public class ApplicationTest {
private ByteArrayOutputStream outContent;
@Before
public void setUpPrintStreamInstance() throws Exception {
this.outContent = new ByteArrayOutputStream();
System.setOut(new PrintStream(outContent));
}
@After
public void tearDownByteArrayOutputStream() throws Exception {
outContent = null;
}
@Test
public void main_NoInputState_TextPrintedToConsole() throws Exception {
Application.main(new String[]{});
assertEquals("User found in the collection", outContent.toString());
}
}
core-java/hashcode/src/test/java/com/baeldung/entities/UserTest.java
-34
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@@ -1,34 +0,0 @@
package com.baeldung.entities;
import org.junit.After;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
public class UserTest {
private User user;
private User comparisonUser;
@Before
public void setUpUserInstances() {
this.user = new User(1L, "test", "[email protected]");
this.comparisonUser = this.user;
}
@After
public void tearDownUserInstances() {
user = null;
comparisonUser = null;
}
@Test
public void equals_EqualUserInstance_TrueAssertion(){
Assert.assertTrue(user.equals(comparisonUser));
}
@Test
public void hashCode_UserHash_TrueAssertion() {
Assert.assertEquals(1792276941, user.hashCode());
}
}
core-java/pom.xml
+5 -1
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@@ -80,7 +80,11 @@
</dependency>
<!-- logging -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
core-java/src/main/java/com/baeldung/concurrent/cyclicbarrier/CyclicBarrierDemo.java
+4 -8
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@@ -15,14 +15,12 @@ public class CyclicBarrierDemo {
private int NUM_PARTIAL_RESULTS;
private int NUM_WORKERS;
private void runSimulation(int numWorkers, int numberOfPartialResults) {
NUM_PARTIAL_RESULTS = numberOfPartialResults;
NUM_WORKERS = numWorkers;
cyclicBarrier = new CyclicBarrier(NUM_WORKERS, new AggregatorThread());
System.out.println("Spawning " + NUM_WORKERS + " worker threads to compute "
+ NUM_PARTIAL_RESULTS + " partial results each");
System.out.println("Spawning " + NUM_WORKERS + " worker threads to compute " + NUM_PARTIAL_RESULTS + " partial results each");
for (int i = 0; i < NUM_WORKERS; i++) {
Thread worker = new Thread(new NumberCruncherThread());
worker.setName("Thread " + i);
@@ -38,8 +36,7 @@ public class CyclicBarrierDemo {
List<Integer> partialResult = new ArrayList<>();
for (int i = 0; i < NUM_PARTIAL_RESULTS; i++) {
Integer num = random.nextInt(10);
System.out.println(thisThreadName
+ ": Crunching some numbers! Final result - " + num);
System.out.println(thisThreadName + ": Crunching some numbers! Final result - " + num);
partialResult.add(num);
}
partialResults.add(partialResult);
@@ -57,13 +54,12 @@ public class CyclicBarrierDemo {
@Override
public void run() {
String thisThreadName = Thread.currentThread().getName();
System.out.println(thisThreadName + ": Computing final sum of " + NUM_WORKERS
+ " workers, having " + NUM_PARTIAL_RESULTS + " results each.");
System.out.println(thisThreadName + ": Computing final sum of " + NUM_WORKERS + " workers, having " + NUM_PARTIAL_RESULTS + " results each.");
int sum = 0;
for (List<Integer> threadResult : partialResults) {
System.out.print("Adding ");
for (Integer partialResult : threadResult) {
System.out.print(partialResult+" ");
System.out.print(partialResult + " ");
sum += partialResult;
}
System.out.println();
core-java/src/main/java/com/baeldung/concurrent/diningphilosophers/Philosopher.java
+2 -1
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@@ -15,7 +15,8 @@ public class Philosopher implements Runnable {
Thread.sleep(((int) (Math.random() * 100)));
}
@Override public void run() {
@Override
public void run() {
try {
while (true) {
doAction(System.nanoTime() + ": Thinking"); // thinking
core-java/src/main/java/com/baeldung/concurrent/executorservice/ExecutorServiceDemo.java
+13 -13
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@@ -6,22 +6,22 @@ import java.util.concurrent.TimeUnit;
public class ExecutorServiceDemo {
ExecutorService executor = Executors.newFixedThreadPool(10);
ExecutorService executor = Executors.newFixedThreadPool(10);
public void execute() {
public void execute() {
executor.submit(() -> {
new Task();
});
executor.submit(() -> {
new Task();
});
executor.shutdown();
executor.shutdownNow();
try {
executor.awaitTermination(20l, TimeUnit.NANOSECONDS);
} catch (InterruptedException e) {
e.printStackTrace();
}
executor.shutdown();
executor.shutdownNow();
try {
executor.awaitTermination(20l, TimeUnit.NANOSECONDS);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
core-java/src/main/java/com/baeldung/concurrent/future/FutureDemo.java
+23 -23
View File
@@ -9,36 +9,36 @@ import java.util.concurrent.TimeoutException;
public class FutureDemo {
public String invoke() {
public String invoke() {
String str = null;
String str = null;
ExecutorService executorService = Executors.newFixedThreadPool(10);
ExecutorService executorService = Executors.newFixedThreadPool(10);
Future<String> future = executorService.submit(() -> {
// Task
Thread.sleep(10000l);
return "Hellow world";
});
Future<String> future = executorService.submit(() -> {
// Task
Thread.sleep(10000l);
return "Hellow world";
});
future.cancel(false);
future.cancel(false);
try {
future.get(20, TimeUnit.SECONDS);
} catch (InterruptedException | ExecutionException | TimeoutException e1) {
e1.printStackTrace();
}
try {
future.get(20, TimeUnit.SECONDS);
} catch (InterruptedException | ExecutionException | TimeoutException e1) {
e1.printStackTrace();
}
if (future.isDone() && !future.isCancelled()) {
try {
str = future.get();
} catch (InterruptedException | ExecutionException e) {
e.printStackTrace();
}
}
if (future.isDone() && !future.isCancelled()) {
try {
str = future.get();
} catch (InterruptedException | ExecutionException e) {
e.printStackTrace();
}
}
return str;
return str;
}
}
}
core-java/src/main/java/com/baeldung/concurrent/threadfactory/BaeldungThreadFactory.java
+13 -13
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@@ -4,20 +4,20 @@ import java.util.concurrent.ThreadFactory;
public class BaeldungThreadFactory implements ThreadFactory {
private int threadId;
private String name;
private int threadId;
private String name;
public BaeldungThreadFactory(String name) {
threadId = 1;
this.name = name;
}
public BaeldungThreadFactory(String name) {
threadId = 1;
this.name = name;
}
@Override
public Thread newThread(Runnable r) {
Thread t = new Thread(r, name + "-Thread_" + threadId);
System.out.println("created new thread with id : " + threadId + " and name : " + t.getName());
threadId++;
return t;
}
@Override
public Thread newThread(Runnable r) {
Thread t = new Thread(r, name + "-Thread_" + threadId);
System.out.println("created new thread with id : " + threadId + " and name : " + t.getName());
threadId++;
return t;
}
}
core-java/src/main/java/com/baeldung/concurrent/threadfactory/Task.java
+5 -5
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@@ -2,9 +2,9 @@ package com.baeldung.concurrent.threadfactory;
public class Task implements Runnable {
@Override
public void run() {
// task details
}
@Override
public void run() {
// task details
}
}
core-java/src/main/java/com/baeldung/concurrent/volatilekeyword/SharedObject.java
+13
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@@ -0,0 +1,13 @@
package com.baeldung.concurrent.volatilekeyword;
public class SharedObject {
private volatile int count=0;
public void increamentCount(){
count++;
}
public int getCount(){
return count;
}
}
core-java/src/main/java/com/baeldung/designpatterns/adapter/AdapterPatternDriver.java
+13
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@@ -0,0 +1,13 @@
package com.baeldung.designpatterns.adapter;
import static com.baeldung.designpatterns.util.LogerUtil.LOG;
public class AdapterPatternDriver {
public static void main(String args[]) {
LuxuryCarsSpeedAdapter luxuryCars = new LuxuryCarsSpeedAdapterImpl();
LOG.info("Bugatti Veyron Super Sport's top speed is " + luxuryCars.bugattiVeyronInKMPH() + " Kmph.");
LOG.info("McLaren F1 top speed is " + luxuryCars.mcLarenInKMPH() + " Kmph.");
LOG.info("Aston Martin One-77 top speed is " + luxuryCars.astonMartinInKMPH() + " Kmph.");
}
}
core-java/src/main/java/com/baeldung/designpatterns/adapter/LuxuryCarsSpeed.java
+15
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@@ -0,0 +1,15 @@
package com.baeldung.designpatterns.adapter;
public class LuxuryCarsSpeed {
public double bugattiVeyronInMPH() {
return 268;
}
public double mcLarenInMPH() {
return 241;
}
public double astonMartinInMPH() {
return 220;
}
}

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