testthreadgroup.java

Java讲义与实例

public class testThreadGroup{
    public void test(){
        ThreadGroup tg=new ThreadGroup("测试线程组");
        Thread A=new Thread(tg,"A");
        Thread B=new Thread(tg,"B");
        Thread C=new Thread(tg,"C");
        A.setPriority(6);
        C.setPriority(4);
        log("线程组正在活动的线程个数:"+tg.activeCount());
        log("线程A的优先级数："+A.getPriority());
        tg.setMaxPriority(8);
        log("线程组的优先级数："+tg.getMaxPriority());
        log("线程组上一级线程组名称："+tg.getParent());
        log("线程组名称："+tg.getName());
        log("打印线程组的信息...");
        tg.list();
        }
    public void log(String strInfo){
        System.out.println(strInfo);
        }    
    public static void main(String arg[]){
        testThreadGroup ttg =new testThreadGroup();
        ttg.test();
        }
    }