字符输入流 InputStreamReader BufferedReader

字符输入流

package day02;

import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;

//字符输入流
public class InputStreamReaderTest {
    
    
  public static void main(String[] args) {
    
    
	try {
    
    
		/* FileInputStream流被称为文件字节输入流，
		意思指对文件数据以字节的形式进行读取操作如读取图片视频等*/
		FileInputStream fis=new FileInputStream("demo/mxl.txt");
		
		//将字节转成字符
		InputStreamReader isr = new InputStreamReader(fis, "utf-8");
		
		//缓冲字符流 将字节转成字符 实现按行读取
		BufferedReader br =new BufferedReader(isr);
		
		String str= br.readLine();
		
		System.out.println("-------------");
		System.out.println(str);
		
	} catch (IOException e) {
    
    
		// TODO Auto-generated catch block
		e.printStackTrace();
	}
	
}
}