deadlockfree.java

来自「《java事件处理指南》一书的代码,好东西」· Java 代码 · 共 38 行

import java.awt.event.*;
import java.awt.*;

public class DeadlockFree
{
   Account acct1, acct2;

   public DeadlockFree(int amt1, int amt2)
   {
      acct1 = new Account(amt1, "account one");
      acct2 = new Account(amt2, "account two");

/*  The first transaction is done as before.   */

      Thread thread1 = new Thread(new TransferAtoB(acct1, acct2, 50));
      thread1.setName("Thread 1");
      thread1.start();
      System.out.println(thread1.getName()+" starting");

/*  The second transaction is now placed on the event queue using  */
/*  the invokeAndWait() method.                                    */

      EventQueue eq = Toolkit.getDefaultToolkit().getSystemEventQueue();
      try
      {
        System.out.println("ActiveEvent dispatched");
        eq.invokeAndWait(new TransferAtoB(acct2, acct1, 75));
      }
      catch (Exception e) {}
   }

   public static void main(String args[])
   {
      DeadlockFree demo = new DeadlockFree(100, 200);
   }

}