使用字节流完成拷备 配合字节数组

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

public class Test5 {
    public static void main(String[] args) throws IOException {
        // 获取要拷备的资源
        FileInputStream fileInputStream = new FileInputStream("apple.png");
        // 获取要保存的目标
        FileOutputStream fileOutputStream = new FileOutputStream("拷备apple.png");

        // 边读。边写
        byte[] bytes = new byte[100];
        int len = fileInputStream.read(bytes);
        while (len != -1) {
            // 写数据
            fileOutputStream.write(bytes, 0, len);
            // 重新再来yao一下
            len = fileInputStream.read(bytes);
        }

        // 关闭资源
        fileInputStream.close();
        fileOutputStream.close();

        System.out.println("game over");

    }
}