corrupteddata.java

来自「Java程序设计技巧与开发实例附书源代码。」· Java 代码 · 共 42 行

public class CorruptedData
{
   protected static int DISPLAY = 1, CHANGE = 2;
   private WorkThread slowWorker = null;
   private WorkThread fastWorker = null;
   private int number = 0;

   public CorruptedData()
   {
      number = (int) (10 * Math.random());
      slowWorker = new WorkThread(this, DISPLAY);
      fastWorker = new WorkThread(this, CHANGE);
   }

   public synchronized void performWork(int type)
   {
      if (type == DISPLAY)
      {
         System.out.println("Number before sleeping: " + number);
         try
         {
            slowWorker.sleep(2000);
         }
         catch (InterruptedException ie)
         {
            System.err.println("Error: " + ie);
         }
         System.out.println("Number after waking up: " + number);
      }
      if (type == CHANGE)
      {
         number = -1;
      }
   }

   public static void main(String args[])
   {
      CorruptedData cd = new CorruptedData();
   }
}