JavaSE-18.2.6【案例-字符缓冲流复制Java文件（基础版实现、基于字符缓冲流特有功能的改进版实现）】

package day9.lesson2;

import java.io.*;

/*
2.10 案例-字符缓冲流复制Java文件
 */
public class CopyJavaDemo03 {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new FileReader("stage2\\src\\day9\\lesson2\\StringDemo.java"));
        BufferedWriter bw = new BufferedWriter(new FileWriter("stage2\\day9_lesson2_copy\\CopyStringDemo03.java"));

        //方式1
        /*int ch;
        while ((ch=br.read()) != -1){
            bw.write(ch);
        }*/

        //方式2
        char[] chars = new char[1024];
        int len;
        while ((len=br.read(chars)) != -1){
//            bw.write(chars);
            bw.write(chars, 0, len);
        }

        bw.close();
        br.close();
    }
}

package day9.lesson2;

import com.sun.xml.internal.ws.api.ha.StickyFeature;

import java.io.*;

/*
2.12 案例-使用字符缓冲流特有功能复制Java文件
 */
public class CopyJavaDemo04 {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new FileReader("stage2\\src\\day9\\lesson2\\StringDemo.java"));
        BufferedWriter bw = new BufferedWriter(new FileWriter("stage2\\day9_lesson2_copy\\CopyStringDemo04.java"));

        String line;
        while ((line=br.readLine()) != null){
            bw.write(line);
            bw.newLine(); //手动换行,因为.readLine()不读取原文件的换行符等，只读取每行的内容
            bw.flush();
        }

        bw.close();
        br.close();
    }
}