Thread join() example

Author: java-w3schools

Dockerfile

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+FROM airhacks/glassfish
+COPY ./target/corejav.war ${DEPLOYMENT_DIR}

README.md

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+# Build
+mvn clean package && docker build -t com.javaprogramtto/corejav .
+
+# RUN
+
+docker rm -f corejav || true && docker run -d -p 8080:8080 -p 4848:4848 --name corejav com.javaprogramtto/corejav 

buildAndRun.sh

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+#!/bin/sh
+mvn clean package && docker build -t com.javaprogramtto/corejav .
+docker rm -f corejav || true && docker run -d -p 8080:8080 -p 4848:4848 --name corejav com.javaprogramtto/corejav 

pom.xml

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+<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.javaprogramtto</groupId>
+    <artifactId>corejava</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+    <packaging>war</packaging>
+    <dependencies>
+        <dependency>
+            <groupId>javax</groupId>
+            <artifactId>javaee-api</artifactId>
+            <version>8.0</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.eclipse.microprofile</groupId>
+            <artifactId>microprofile</artifactId>
+            <version>2.0.1</version>
+            <type>pom</type>
+            <scope>provided</scope>
+        </dependency>
+    </dependencies>
+    <build>
+        <finalName>corejav</finalName>
+    </build>
+    <properties>
+        <maven.compiler.source>1.8</maven.compiler.source>
+        <maven.compiler.target>1.8</maven.compiler.target>
+        <failOnMissingWebXml>false</failOnMissingWebXml>
+    </properties>
+</project>

src/main/java/com/airhacks/JAXRSConfiguration.java

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+package com.airhacks;
+
+import javax.ws.rs.ApplicationPath;
+import javax.ws.rs.core.Application;
+
+/**
+ * Configures a JAX-RS endpoint. Delete this class, if you are not exposing
+ * JAX-RS resources in your application.
+ *
+ * @author airhacks.com
+ */
+@ApplicationPath("resources")
+public class JAXRSConfiguration extends Application {
+
+}

src/main/java/com/airhacks/ping/boundary/PingResource.java

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+package com.airhacks.ping.boundary;
+
+import javax.inject.Inject;
+import javax.ws.rs.GET;
+import javax.ws.rs.Path;
+import org.eclipse.microprofile.config.inject.ConfigProperty;
+
+/**
+ *
+ * @author airhacks.com
+ */
+@Path("ping")
+public class PingResource {
+
+    @Inject
+    @ConfigProperty(name = "message")
+    String message;    
+
+    @GET
+    public String ping() {
+        return this.message + " Jakarta EE with MicroProfile 2+!";
+    }
+
+}

src/main/java/com/javaprogramto/threads/ThreadJoinExample.java

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+package com.javaprogramto.threads;
+
+public class ThreadJoinExample {
+
+	public static void main(String[] args) throws InterruptedException {
+		System.out.println("main thread started execution. Current thread name : " + Thread.currentThread().getName());
+		PrintNumbers t1 = new PrintNumbers(1, 10);
+		PrintNumbers t2 = new PrintNumbers(11, 20);
+		PrintNumbers t3 = new PrintNumbers(21, 30);
+
+		t1.start();
+		t1.join();
+
+		t2.start();
+		t2.join();
+
+		t3.start();
+		t3.join();
+
+		System.out.println("All threads completed excution.");
+		System.out.println(Thread.currentThread().getName() + " complete execution");
+	}
+
+}
+
+class PrintNumbers extends Thread {
+
+	private int start;
+	private int end;
+
+	public PrintNumbers(int start, int end) {
+		this.start = start;
+		this.end = end;
+	}
+
+	@Override
+	public void run() {
+		for (int i = start; i <= end; i++) {
+			System.out.println(Thread.currentThread().getName() + " - " + i);
+		}
+		System.out.println(Thread.currentThread().getName() + " thread execution completed.");
+	}
+}

src/main/resources/META-INF/microprofile-config.properties

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+message=Enjoy

src/main/webapp/WEB-INF/beans.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<beans xmlns="http://xmlns.jcp.org/xml/ns/javaee"
+       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+       xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/beans_2_0.xsd"
+       bean-discovery-mode="all" version="2.0">
+</beans>