JAVA 缓冲流为何要配合字节数组的使用?

缓冲流是在缓冲区中创建了一个字节数组,缓冲区是在内存当中的,效率很高,它创建的这个字节数组是用来储存输出流等传递过来的数据的,直到储存到8196长度时

,它才会向外输出.而输出流向这个缓冲区传递数据时,如果是用字节数组进行的,那么效率就会更高

package test;

import java.io.*;

public class BufferInputDemo  {
    public static void main(String[] args) throws IOException {
        System.out.println("=========");
        BufferedInputStream bufferedInputStream = new BufferedInputStream(new FileInputStream("./1.txt"));
        //写数据
        BufferedOutputStream bufferedOutputStream = new BufferedOutputStream(new FileOutputStream("./3.txt"));
        int m;
        while ((m=bufferedInputStream.read() )!=-1){
            System.out.println((char) m);
            bufferedOutputStream.write(m);
        }
        bufferedInputStream.close();
        bufferedInputStream.close();


    }
}