How to read file in Java – BufferedInputStream

1. Overview In this example, we will use BufferedInputStream class to read file. The BufferedInputStream class is used to read information from stream. It internally uses buffer mechanism to make the performance fast.

2. Example

package com.javaguides.javaio.fileoperations.examples;

import java.io.BufferedInputStream;
import java.io.FileInputStream;
import java.io.IOException;

public class BufferedInputStreamExample {
	public static void main(String[] args) {
		try( FileInputStream fin=new FileInputStream("D:\\testout.txt");    
			    BufferedInputStream bin=new BufferedInputStream(fin); ){
			int i;    
		    while((i=bin.read())!=-1){    
		     System.out.print((char)i);    
		    }    
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
}

Reference

https://docs.oracle.com/javase/8/docs/api/java/io/BufferedInputStream.html https://docs.oracle.com/javase/tutorial/essential/exceptions/tryResourceClose.html