io读写文件内容例子

用来读取1.txt中的内容，添加到2.txt里面，请确保1.txt中有内容，以及路径的正确。

 

package com.zsc.io;

/**
 * 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("E:\\1.txt");
			File write = new File("E:\\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);
		}
	}
}