Convert InputStream to Reader using InputStreamReader - Java

Post Views: 3,072

In this tutorial, we will see “How to convert InputStream to Reader in Java ?” An InputStreamReader class helps to convert InputStream to Reader. Here, we are going to use 2 different approaches to achieve this.

Convert InputStream to Reader in Java with example...!!! Share on X

Approach 1.

import java.io.ByteArrayInputStream;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
public class InputStreamReaderApproach1 {
    public static void main(String[] args) {
        String inputStringObj = "This is Techndeck, a Unique place for Programmers.";
        InputStream inputStreamObj = null;
        Reader readerObj = null;
        try {
            inputStreamObj = new ByteArrayInputStream(inputStringObj.getBytes());
            readerObj = new InputStreamReader(inputStreamObj, "UTF-8");
            int i;
            while ((i = readerObj.read()) != -1) {
                System.out.print((char) i);
            }
        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }
}

import java.io.ByteArrayInputStream;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.io.Reader;

public class InputStreamReaderApproach1 {

public static void main(String[] args) {

String inputStringObj = "This is Techndeck, a Unique place for Programmers.";

InputStream inputStreamObj = null;

Reader readerObj = null;

try {

inputStreamObj = new ByteArrayInputStream(inputStringObj.getBytes());

readerObj = new InputStreamReader(inputStreamObj, "UTF-8");

int i;

while ((i = readerObj.read()) != -1) {

System.out.print((char) i);

}

} catch (Exception ex) {

ex.printStackTrace();

}

Output:

This is Techndeck, a Unique place for Programmers.

1	This is Techndeck, a Unique place for Programmers.

Approach 2.

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.io.InputStreamReader;
public class InputStreamReaderApproach2 {
    public static void main(String[] args) {
        File fileObj = new File("/Users/d33p4k/Documents/Techndeck/JavaPractice/InputString"); //InputString is a .txt file //This is Mac based path, if you are using Windows or Linus, Choose accordingly.
        InputStream inputStreamObj = null;
        BufferedReader bufferedReaderObj = null;
        String lineObj = null;
        try {
            inputStreamObj = new FileInputStream(fileObj);
            bufferedReaderObj = new BufferedReader(new InputStreamReader(inputStreamObj));
            while (bufferedReaderObj.ready()) {
                lineObj = bufferedReaderObj.readLine();
                System.out.println(lineObj);
            }
        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }
}

import java.io.BufferedReader;

import java.io.File;

import java.io.FileInputStream;

import java.io.InputStream;

import java.io.InputStreamReader;

public class InputStreamReaderApproach2 {

public static void main(String[] args) {

File fileObj = new File("/Users/d33p4k/Documents/Techndeck/JavaPractice/InputString"); //InputString is a .txt file //This is Mac based path, if you are using Windows or Linus, Choose accordingly.

InputStream inputStreamObj = null;

BufferedReader bufferedReaderObj = null;

String lineObj = null;

try {

inputStreamObj = new FileInputStream(fileObj);

bufferedReaderObj = new BufferedReader(new InputStreamReader(inputStreamObj));

while (bufferedReaderObj.ready()) {

lineObj = bufferedReaderObj.readLine();

System.out.println(lineObj);

}

} catch (Exception ex) {

ex.printStackTrace();

}

Output:

Hi, How are you?
This is Techndeck, a Unique place for Programmers.
I hope you will like the content of this website.

Hi, How are you?

This is Techndeck, a Unique place for Programmers.

I hope you will like the content of this website.

Do you like this Post? – then check my other helpful posts:

Other Useful References:

Author

Deepak Verma
Deepak Verma is a Test Automation Consultant and Software development Engineer for more than 10 years. His mission is to help you become an In-demand full stack automation tester. He is also the founder of Techndeck, a blog and online coaching platform dedicated to helping you succeed with all the automation basics to advanced testing automation tricks.
View all posts
http://Techndeck.com deepak.rkgit@gmail.com Verma Deepak

Convert InputStream to Reader using InputStreamReader – Java

Approach 1.

Approach 2.

Other Useful References:

Author

Submit a Comment Cancel reply

Subscribe to our Newsletter

Convert InputStream to Reader using InputStreamReader – Java

Approach 1.

Approach 2.

Other Useful References:

Author

Related posts:

Submit a Comment Cancel reply

Subscribe to our Newsletter