inputoutput.java

java 的好东西,,开发的基本语言语法教程

/**
 * reader   writer
 */

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

public class InputOutput{
	public static void main(String[] args){
		try {
			File fname=new File("newFile.txt");
			FileReader fr=new FileReader(fname);
			BufferedReader br=new BufferedReader(fr);//装饰模式
			
			FileWriter fw=new FileWriter("copyNewFile.txt");
			BufferedWriter bw=new BufferedWriter(fw);
			
			String line=br.readLine();
			while(line!=null){
				bw.write(line);
				bw.newLine();
				line=br.readLine();
			}
			br.close();
			bw.close();	
	    }
	    catch (Exception ex) {
	    	ex.printStackTrace();
	    }
		
		
		
	}
}