读写bat文件

package Test;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;

public class OperateDat
{
public static void main(String[] args)
{
File batfile = new File("IP.dat");
String strFile;
//寫bat文件
try
{
BufferedReader br = new BufferedReader(new FileReader(batfile));
//加上true不會覆蓋文件原來的內容
BufferedWriter bw = new BufferedWriter(new FileWriter(batfile,true));
bw.write("123456");
bw.newLine();//換行
bw.flush();//刷新
bw.close();//關閉
}
catch (IOException e)
{
e.printStackTrace();
}
//讀bat文件
try
{
BufferedReader br = new BufferedReader(new FileReader(batfile));
while((strFile=br.readLine()) != null)
{
System.out.println(strFile);
}
br.close();
}
catch (FileNotFoundException e)
{
e.printStackTrace();
}
catch (IOException e)
{
e.printStackTrace();
}

}
}