synchronization3.java

该原代码为＜Java编程基础、应用与实例＞的附盘代码

class PrintThread2 extends Thread{
  char ch;
  static Object printer=new Object();
  public PrintThread2(char ch){
  	this.ch=ch;
  }
  void printCh10(){
    for(int i=1;i<=10;i++)
  	   System.out.print(ch);
  }
  public void run(){
  	synchronized(printer){
  	  for(int i=1;i<=5;i++){
  	    printCh10();
  	    System.out.println();
      }
    }
  }
}
public class Synchronization3{
  public static void main(String[] args) throws Exception{
     PrintThread2 pt1=new PrintThread2('A');
     PrintThread2 pt2=new PrintThread2('B');
     PrintThread2 pt3=new PrintThread2('C');
     pt1.start();
     pt2.start();
     pt3.start();
  }
}