java 复制文件打印流改进版

package systemdemo;

import java.io.*;

public class fz {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new FileReader("stu\\src\\systemdemo\\fw.txt"));
        PrintWriter pw = new PrintWriter("stu\\src\\systemdemo\\hh.txt");
        String line;
        while ((line = br.readLine())!=null){
            pw.println(line);
        }
        br.close();
        pw.close();
    }
}