testextern.java

实例精华

import java.io.*;

public class TestExtern
{  
  ExternExample ee = null;
  //自定义读方法
  public void readObject()
  {
    try {
      FileInputStream fis = new FileInputStream("extern.tmp");
      ObjectInputStream ois = new ObjectInputStream(fis);
      ee = (ExternExample) ois.readObject();
      System.out.println(ee);
    } catch (Exception e) {
      e.printStackTrace();
      System.exit(1);
    }
  }
  //自定义写方法
  public void writeObject()
  {
    ee = new ExternExample("Andy","123 456 789",45,15000.0);
    try {
      FileOutputStream fos = new FileOutputStream("extern.tmp");
      ObjectOutputStream oos = new ObjectOutputStream(fos);
      oos.writeObject(ee);
      oos.close();
    } catch (Exception e) {
      e.printStackTrace();
      System.exit(1);
    }
  }
  
  public static void main(String args[])
  {
    if(args.length!=1)
    {
      System.out.println("用法：java TestExtern -d|-s");
      System.out.println("-s:系列化操作");
      System.out.println("-d:反系列化操作");
      System.exit(1);
    }
    else
    {
      TestExtern te = new TestExtern();
      if(args[0].equals("-s"))
      {
        te.writeObject();
      }
      else if(args[0].equals("-d"))
      {
        te.readObject();
      }
      else
      {
        System.out.println("用法：java TestExtern -d|-s");
        System.out.println("-s:系列化操作");
        System.out.println("-d:反系列化操作");
        System.exit(1);      
      }
    }   
  }  
}