练习复制java文件

package com.io.liushuaishuai;

import java.io.*;

public class copyjavaDemo {
    public static void main(String[] args) throws IOException {
        InputStreamReader isr = new InputStreamReader(new FileInputStream("C:\\Users\\86132\\IdeaProjects\\javaSE_Code\\myIOstream\\src\\com\\io\\liushuaishuai\\BufferStreamDemo.java"));
        OutputStreamWriter osw = new OutputStreamWriter(new FileOutputStream("C:\\Users\\86132\\IdeaProjects\\javaSE_Code\\myIOstream\\src\\com\\io\\liushuaishuai\\copy.java"));


        //一次读取一个字符数据
        /*
        int i;
        while((i= isr.read())!= -1) {
            osw.write(i);
        }
        osw.close();
        isr.close();
        */
        //一次读取一个字符数组
        char[] a = new char[1024];
        int len;
        while ((len = isr.read(a)) != -1) {
            osw.write(a,0,len);
        }

        osw.close();
        isr.close();

    }


}