testthread.java

本书是一本为Java学习者在基础内容学习结束后进行课程设计时提供参考的指导书

package apibook.c2.s3;

public class TestThread {
  public static void main(String[] args) {
    Thread r=null;
    for (int i=0;i<5 ;i++ ) {
      r=new ct(i);
      r.start();
    }
  }
}
class ct extends Thread{
  private int k;
  public ct(int j){
    k=j;
  }
  public void run(){
    for (int i=0;i<100;i++ ) {
      synchronized(System.out){

          System.out.println(Thread.currentThread().getName());
          System.out.println(Thread.activeCount());
          this.setPriority(3);
          //System.out.println(Thread.currentThread().getPriority());
      }
          try {
            Thread t=null;
            for(int n=0;n<3;n++){
              t=new ctt(k,n);
              t.setPriority(5);
              t.join();
              t.start();
            }
            //this.wait();
            //this.notifyAll();
            this.sleep(50);
          }
          catch (Exception ex) {
          }
    }
  }
}
class ctt extends Thread{
  private int k,m;
  public ctt(int l,int j){
    k=l;
    m=j;
  }
  public void run(){
    for (int i=0;i<100 ;i++ ) {
      synchronized(System.out){
          System.out.println("child Thread:"+k+"-"+m);
      }
          try {
            //this.wait();
            //this.notifyAll();
            this.sleep(50);
          }
          catch (Exception ex) {
          }
    }
  }
}