一个小的程序1

  

package com;

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.Properties;

public class PropartielFile {

 /**
  * @param args

---

  */
 public static void main(String[] args) {
  Properties settings =new Properties();
  try 
  {
   settings.load(new FileInputStream("count.txt"));
  }
  catch(Exception e)
  {
   //e.printStackTrace();
   settings.setProperty("count",String.valueOf(0));

  }
  //settings.get("count")
  int c = Integer.parseInt(settings.getProperty("count")) + 1;
  System.out.println("这是第"+ c+"次运行");
  //settings.put("count",new Integer(c).toString());
  settings.setProperty("count",new Integer(c).toString());
  try
  {
   settings.store(new FileOutputStream("count.txt"),"Program is used:");
  }
  catch(Exception e)
  {
   e.printStackTrace();
  }
 }
}