Java IO学习基础之读写文本文件

简单的示例程序如下：
    
    /**
 * 读出1.txt中的内容，写入2.txt中
 *
 */

import java.io.*;

public class ReadWriteFile{
 public static void main(String[] args){
  try{
   
   File read = new File("c://1.txt");
   File write = new File("c://2.txt");
   
   BufferedReader br = new BufferedReader(
         new FileReader(read));
   BufferedWriter bw = new BufferedWriter(
         new FileWriter(write));
   String temp = null;
   temp = br.readLine();
   while(temp != null){
    //写文件
    bw.write(temp + "/r/n"); //只适用Windows系统
    //继续读文件
    temp = br.readLine();
   }
   
   bw.close();
   br.close();
   
  }catch(FileNotFoundException e){ //文件未找到
   System.out.println (e);
  }catch(IOException e){
   System.out.println (e);
  } 
 } 
}