JavaSE-19.2.3【案例-复制Java文件（打印流改进版）】

package day10.lesson2;

import java.io.*;

/*
2.5 案例-复制Java文件（打印流改进版）
 */
public class CopyJavaDemo {
    public static void main(String[] args) throws IOException {
        /*BufferedReader br = new BufferedReader(new FileReader("stage2\\src\\day10\\lesson2\\SystemInAndOutDemo.java"));
        BufferedWriter bw = new BufferedWriter(new FileWriter("stage2\\day9_lesson2_copy\\CopySystemInAndOutDemo.java"));

        String line;
        while ((line=br.readLine()) != null){
            bw.write(line);
            bw.newLine();
            bw.flush();
        }

        bw.close();
        br.close();*/

        //打印流改进
        BufferedReader br = new BufferedReader(new FileReader("stage2\\src\\day10\\lesson2\\SystemInAndOutDemo.java"));
        PrintWriter pw = new PrintWriter(new FileWriter("stage2\\day9_lesson2_copy\\CopySystemInAndOutDemo.java"), true);

        String line;
        while ((line=br.readLine()) != null){
            pw.println(line);
        }

        pw.close();
        br.close();
    }
}