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How to Read and Print Text Data Using ByteArrayInputStream and DataInputStream in Java

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by vigneshchennai74 dot icon Updated: Feb 20, 2023

Solution Kit Solution Kit  

 Input streams and data streams in Java and similar concepts in other programming languages provide a powerful and flexible way to read and process text data. This capability is essential in many applications, from processing and analyzing large datasets to building web and mobile applications that involve reading and processing user input. 


These classes and objects are part of the Java I/O (input/output) framework, which provides classes and interfaces to read and write data in various formats. Here are some ways in which they can be helpful: 

  • ByteArrayInputStream can read a small amount of data already in memory, which can be more efficient than reading from a file or a network socket. It is often used in testing, debugging, or creating a stream on the fly. 
  • DataInputStream can read binary data from an input stream, which is useful for reading and processing files or network data in a binary format. It provides methods for reading various data types, such as integers, floats, and strings, and handles the conversion to the appropriate Java data type. 
  • InputStream is the base class for all input streams in Java and provides a common interface for reading bytes of data from various sources. It represents input streams from files, network sockets, and other data sources. It is the foundation for many other input stream classes in Java. 
  • Charset can encode and decode strings in different character sets, which is important for working with text data with different encodings. It provides a standardized way to represent character sets and supports many common characters sets such as UTF-8, ISO-8859-1, and US-ASCII. 


Reading and processing text data using input streams and data streams is a foundational skill for many types of software development. It plays an important role in enabling the creation of powerful and robust applications. 

Preview of the output that you will get on running this code.

Code

In this function we have used Java.io library.

How can I convert a String into a DataInputStream type in Java?

JavadotLines of Code : 20dotLicense : Strong Copyleft (CC BY-SA 4.0)

import java.io.ByteArrayInputStream;
import java.io.DataInputStream;
import java.io.InputStream;
import java.nio.charset.Charset;

public class MyApp {

    public static void main(String[] args) throws Exception {

        InputStream is = new ByteArrayInputStream("hi I am test".getBytes(Charset.forName("UTF-8")));

        DataInputStream dataIn = new DataInputStream(is);
        while (dataIn.available() > 0) {
            String k = dataIn.readLine();
            System.out.print(k + " ");
        }
    }

}
  1. Copy the code using the "Copy" button above, and paste it in a Java file in your IDE.
  2. Add java.io library and import in you java ide
  3. Run to convert the string


I hope you found this useful. I have added the link to dependent libraries, version information in the following sections.


I found this code snippet by searching for "Convert a string into Data input Stream type in java" in kandi. You can try any such use case!

Dependent Library

java-nio-serverby jjenkov

Java doticonstar image 890 doticonVersion:Currentdoticon
License: Permissive (Apache-2.0)

A Java NIO Server using non-blocking IO all the way through.

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            java-nio-serverby jjenkov

            Java doticon star image 890 doticonVersion:Currentdoticon License: Permissive (Apache-2.0)

            A Java NIO Server using non-blocking IO all the way through.
            Support
              Quality
                Security
                  License
                    Reuse

                      Environment Tested

                      I tested this solution in the following versions. Be mindful of changes when working with other versions.


                      • The solution is created in java version "1.8.0_251".


                      In this solution we are going to Convert a string into Data input Stream type in java with simple steps. This process also facilities an easy to use, hassle free method to create a hands-on working version of code which would help us convert a string into input stream in Java.

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