public class testThreadGroup{
    public void test(){
        ThreadGroup tg=new ThreadGroup("測試線程組");
        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("線程組正在活動的線程個數(shù):"+tg.activeCount());
        log("線程A的優(yōu)先級數(shù)："+A.getPriority());
        tg.setMaxPriority(8);
        log("線程組的優(yōu)先級數(shù)："+tg.getMaxPriority());
        log("線程組上一級線程組名稱："+tg.getParent());
        log("線程組名稱："+tg.getName());
        log("打印線程組的信息...");
        tg.list();
        }
    public void log(String strInfo){
        System.out.println(strInfo);
        }    
    public static void main(String arg[]){
        testThreadGroup ttg =new testThreadGroup();
        ttg.test();
        }
    }