start() 和 system.out 的优先级别

2012-03-22 05:16:22 186 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

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结果怎么是
Totle Money: 100.0
100.0
100.0
7
1
100.0
withdraw 100 success
0.0
withdraw 100 failed!
附带代码

package two;



public class Account {



	double balance;

	

	  public Account(double money){

		//  System.out.println(6);

	     balance = money;

	     System.out.println("Totle Money: "+balance);

	   //  System.out.println(3);

	   }

	  public void ba() {

		  

		  System.out.println(balance);

	  }

	   public void withdraw(double money){

		//   System.out.println(2);

	     synchronized (this) {

	       if (balance >= money) {

	         balance = balance - money;

	     //    System.out.println(4);

	         System.out.println("withdraw 100 success");

	       }

	       else

	         System.out.println("withdraw 100 failed!");

	     }

	   }

	}



package two;



public class AccountThread extends Thread {



	Account acount;

	  public AccountThread(Account acount) {

		 // System.out.println(5);

	    this.acount = acount;

	    acount.ba();

	    

	  }

	  public void run(){

		acount.ba();

	    acount.withdraw(100);

	  }

	   

}



package two;



public class Tst {



	/**

	 * @param args

	 */

	public static void main(String[] args) {



		Account acount = new Account(100);

		

		AccountThread acountThread31 = new AccountThread(acount);

		AccountThread acountThread32 = new AccountThread(acount);

		System.out.println(7);

		acountThread31.start();

		System.out.println(1);

		acountThread32.start();

	}



}