synchronization5.java

《Java编程基础、应用与实例》 源文件下载

class Printer{
  synchronized void printChar(char ch){
    for(int i=1;i<=10;i++)
  	    System.out.print(ch);
  }
}
class PrinterThread extends Thread{
  Printer ptr;
  char ch;
  PrinterThread(Printer ptr, char ch){
  	this.ptr=ptr;
  	this.ch=ch;
  }
  public void run(){
  	for(int i=1;i<=10;i++){
  	  ptr.printChar(ch);
  	  System.out.println();
  	}
  }
}
public class Synchronization5{
  public static void main(String[] args){
  	 Printer ptr=new Printer();
     PrinterThread pt1=new PrinterThread(ptr,'A');
     PrinterThread pt2=new PrinterThread(ptr,'B');
     pt1.start();
     pt2.start();
  }
}