public class SynMethon implements Runnable{private  double money=1000000;public  void run(){dbMoney();}//同步方法private synchronized void dbMoney(){Thread t=Thread.currentThread();for(int i=1;i<=10;i++){if(t.getName().equals( "会计" )){money+=i*10;System.out.println( t.getName()+"正在整理账户" );}if(t.getName().equals( "出纳" )){money-=i*5;System.out.println( t.getName()+"正在支取账户" );}System.out.println( "当前金额为"+money );try {Thread.sleep( 1000 );}catch (InterruptedException e){e.printStackTrace();}}}
}

测试类

public class test110 {public static void main(String[] args){//测试同步方法SynMethon synMethon=new SynMethon();Thread kuaiji=new Thread( synMethon,"会计" );kuaiji.setPriority( Thread.MAX_PRIORITY );kuaiji.start();Thread chuna=new Thread( synMethon,"出纳" );chuna.start();}
}

运行结果