字节流写与读

字节流写与读

package com.io;

import java.io.FileInputStream;
import java.io.FileOutputStream;
/**
 * 字节流:InputStream : OutPutStream
 * @author 小明
 *
 */
public class FileStreamDemo {
public static void main(String[] args) throws Exception {
	//写文件
	FileOutputStream fos = new FileOutputStream("C:\\Users\\小明\\Desktop\\FileStreamDemo.txt");//写数据
	fos.write("aaacc".getBytes());
	fos.close();
	
	//读文件
	
	FileInputStream aa = new FileInputStream("C:\\Users\\小明\\Desktop\\FileStreamDemo.txt");//写数据
	byte[] buf = new byte[1024];
	int len =0;
	while((len=aa.read(buf))!=-1){
		System.out.println(new String(buf, 0, len));
		
	}
	aa.close();
}
}