Example usage for java.lang ThreadGroup ThreadGroup

Introduction

In this page you can find the example usage for java.lang ThreadGroup ThreadGroup.

Prototype

public ThreadGroup(String name)

Source Link

Document

Constructs a new thread group.

Usage

From source file:Main.java

public static void main(String[] args) {

    ThreadGroup group = new ThreadGroup("admin");
    Thread t = new Thread(group, "website");

    System.out.println("Threadgroup = " + group.getName());

    String str = group.toString();
    System.out.println(str);/*from w ww. j  a v a 2 s .  co  m*/
}

From source file:ThreadGroupDemo1.java

public static void main(String[] args) {
    ThreadGroup tg = new ThreadGroup("My ThreadGroup");

    MyThread mt = new MyThread(tg, "My Thread");
    mt.start();//from  w  ww  . j  a  va2 s .c  om
}

From source file:Main.java

public static void main(String[] args) {
    final ThreadGroup threadGroup = new ThreadGroup("workers");
    ExecutorService executor = Executors.newCachedThreadPool(new ThreadFactory() {
        public Thread newThread(Runnable r) {
            return new Thread(threadGroup, r);
        }/*from  w ww. j  ava 2 s  .c  om*/
    });
    System.out.println(threadGroup.activeCount());
}

From source file:ThreadDemo.java

public static void main(String[] args) {
    ThreadGroup tgrp = new ThreadGroup("Thread Group");
    Thread t = new Thread(tgrp, new ThreadDemo());
    t.start();//from  ww  w . jav a 2 s  . c o m
}

From source file:Main.java

public static void main(String[] args) {
    System.setProperty("java.security.policy", "file:/C:/java.policy");

    SecurityManager sm = new Main();

    System.setSecurityManager(sm);

    // check if accepting access for thread group is enabled
    sm.checkAccess(new ThreadGroup("example"));

    System.out.println("Allowed!");
}

From source file:MyThread.java

public static void main(String args[]) throws Exception {

    ThreadGroup group = new ThreadGroup("new Group");

    MyThread t1 = new MyThread(group, "Thread1");
    MyThread t2 = new MyThread(group, "Thread2");

    t1.start();//from  ww  w  . j ava 2 s .  c  o  m
    t2.start();

    Thread.sleep(1000);

    System.out.println(group.activeCount() + " threads in thread group...");

    Thread th[] = new Thread[group.activeCount()];
    group.enumerate(th);
    for (Thread t : th) {
        System.out.println(t.getName());
    }
    Thread.sleep(1000);

    System.out.println(group.activeCount() + " threads in thread group...");

    group.interrupt();
}

From source file:MyThread.java

public static void main(String args[]) throws Exception {

    ThreadGroup group = new ThreadGroup("Group");

    ThreadGroup newGroup = new ThreadGroup(group, "new group");

    MyThread t1 = new MyThread(group, "Thread1");
    MyThread t2 = new MyThread(group, "Thread2");

    t1.start();//from   w ww  .ja  v a  2  s. com
    t2.start();

    Thread.sleep(1000);

    System.out.println(group.activeCount() + " threads in thread group...");

    Thread th[] = new Thread[group.activeCount()];
    group.enumerate(th);
    for (Thread t : th) {
        System.out.println(t.getName());
    }
    Thread.sleep(1000);

    System.out.println(group.activeCount() + " threads in thread group...");

    group.interrupt();
}

From source file:MyThread.java

public static void main(String args[]) throws Exception {
    ThreadGroup tg = new ThreadGroup("My Group");

    MyThread thrd = new MyThread(tg, "MyThread #1");
    MyThread thrd2 = new MyThread(tg, "MyThread #2");
    MyThread thrd3 = new MyThread(tg, "MyThread #3");

    thrd.start();/*from ww w. j a v a2 s  . c o m*/
    thrd2.start();
    thrd3.start();

    Thread.sleep(1000);

    System.out.println(tg.activeCount() + " threads in thread group.");

    Thread thrds[] = new Thread[tg.activeCount()];
    tg.enumerate(thrds);
    for (Thread t : thrds)
        System.out.println(t.getName());

    thrd.myStop();

    Thread.sleep(1000);

    System.out.println(tg.activeCount() + " threads in tg.");
    tg.interrupt();
}

From source file:NewThread.java

public static void main(String args[]) {
    ThreadGroup groupA = new ThreadGroup("Group A");
    ThreadGroup groupB = new ThreadGroup("Group B");

    NewThread ob1 = new NewThread("One", groupA);
    NewThread ob2 = new NewThread("Two", groupA);
    NewThread ob3 = new NewThread("Three", groupB);
    NewThread ob4 = new NewThread("Four", groupB);

    groupA.list();//from w ww . j  ava  2  s. c  o  m
    groupB.list();
    Thread tga[] = new Thread[groupA.activeCount()];
    groupA.enumerate(tga);
    for (int i = 0; i < tga.length; i++) {
        ((NewThread) tga[i]).mysuspend();
    }

    try {
        Thread.sleep(4000);
    } catch (InterruptedException e) {
        System.out.println("Main thread interrupted.");
    }

    System.out.println("Resuming Group A");
    for (int i = 0; i < tga.length; i++) {
        ((NewThread) tga[i]).myresume();
    }

    try {
        ob1.join();
        ob2.join();
        ob3.join();
        ob4.join();
    } catch (Exception e) {
        System.out.println("Exception in Main thread");
    }
}

From source file:MyThread.java

public static void main(String args[]) {
    ThreadGroup groupA = new ThreadGroup("Group A");
    ThreadGroup groupB = new ThreadGroup("Group B");

    MyThread ob1 = new MyThread("One", groupA);
    MyThread ob2 = new MyThread("Two", groupA);
    MyThread ob3 = new MyThread("Three", groupB);
    MyThread ob4 = new MyThread("Four", groupB);

    System.out.println("\nHere is output from list():");
    groupA.list();// w  w  w.  ja v  a 2s.  c om
    groupB.list();

    System.out.println("Suspending Group A");
    Thread tga[] = new Thread[groupA.activeCount()];
    groupA.enumerate(tga); // get threads in group
    for (int i = 0; i < tga.length; i++) {
        ((MyThread) tga[i]).suspendMe(); // suspend each thread
    }

    try {
        Thread.sleep(1000);
    } catch (InterruptedException e) {
        System.out.println("Main thread interrupted.");
    }

    System.out.println("Resuming Group A");
    for (int i = 0; i < tga.length; i++) {
        ((MyThread) tga[i]).resumeMe();
    }

    try {
        System.out.println("Waiting for threads to finish.");
        ob1.join();
        ob2.join();
        ob3.join();
        ob4.join();
    } catch (Exception e) {
        System.out.println("Exception in Main thread");
    }
    System.out.println("Main thread exiting.");
}