java中的文件复制

/*
   java 的文件复制
   @author:luowen
   @time:2013-10-23 
*/
import java.io.*;

class TextMove
{
	public static void main(String[] args) throws IOException
	{ 
		  	//创建读写文件对象
		FileReader fr = new FileReader("demo.txt");
		FileWriter fw = new FileWriter("demo1.txt");
		//创建缓冲区
		BufferedReader br = new BufferedReader(fr);
		BufferedWriter bw = new BufferedWriter(fw);
		
		String tmp = null;
		//将读出来的东西写入到文件	
		while((tmp = br.readLine()) != null)
		{
			bw.write(tmp);
		}	
		//关闭资源
		br.close();
		bw.close();
	}
}