bubblesortthread.java

Java5.0 Tiger 程序员高手秘笈一书的源代码

package com.oreilly.tiger.ch10;

public class BubbleSortThread extends Thread {

  private int[] numbers;

  public BubbleSortThread(int[] numbers) {
    setName("Simple Thread");
    setUncaughtExceptionHandler(
      new SimpleThreadExceptionHandler());
    this.numbers = numbers;
  }

  public void run() {
    int index = numbers.length;
    boolean finished = false;
    while (!finished) {
      index--;
      finished = true;
      for (int i=0; i<index; i++) {
        // Create error condition
        if (numbers[i+1] < 0) {
          throw new IllegalArgumentException(
            "Cannot pass negative numbers into this thread!");
        }

        if (numbers[i] > numbers[i+1]) {
          // swap
          int temp = numbers[i];
          numbers[i] = numbers[i+1];
          numbers[i+1] = temp;

          finished = false;
        }
      }
    }    
  }
}

class SimpleThreadExceptionHandler implements
    Thread.UncaughtExceptionHandler {

  public void uncaughtException(Thread t, Throwable e) {
    System.err.printf("%s: %s at line %d of %s%n",
        t.getName(), 
        e.toString(),
        e.getStackTrace()[0].getLineNumber(),
        e.getStackTrace()[0].getFileName());
  }
}