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package com.cug.datastream;import java.io.BufferedReader;import java.io.FileReader;import java.io.FileWriter;import java.io.IOException;import java.io.PrintWriter;public class PrintWriterDemo {	public static void main(String[] args) throws IOException {		BufferedReader br = new BufferedReader(new FileReader("a.txt"));				PrintWriter pw = new PrintWriter(new FileWriter("p.txt"));		String line = null;		while((line = br.readLine())!=null){			pw.println(line);			}				br.close();		pw.close();	}}

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