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Read Input From Stdin Java

Last Updated : Mar 11, 2024

Read Input From Stdin Java

In this article we will show you the solution of read input from stdin java, in Java can be used to represent the standard input (stdin). The InputStream class is represented by

Meaning that all of its functions operate on bytes rather than Strings A Reader or Scanner class can be used to read data from a keyboard.

Java uses the Stdin to collect user input in the shape of strings or integers.

With the help of a class called java.util.Scanner, Java offers users a very streamlined and simple method to allow them to input information via the keyboard.

In the command prompt environment, there are four alternative ways in Java to read user input (console).

This is the JDK1.0-introduced traditional Java method for accepting input. in (common input stream) inside an InputStreamReader, which would be wrapped in a BufferedReader.

  • Buffering is used to read data quickly.c
  • It's challenging to recall the wrapping code.

To read a number, we can employ the classes listed following table:

  • Scanner class usage
  • BufferedReader Class Utilization
  • Using Arguments in Command-Line

The Scanner class definition can be found in the util package. As a result, importing the package is required when using the Scan class.

Additionally, the class offers methods that accept input of several primitive types, including int, double, long, char, etc.

A Scanner class object must first be created before the nextInt() method can be called in order to read an integer from the user.

Step By Step Guide On Read Input From Stdin Java :-

import java.util.Scanner;
public class TalkersCode
public static void main(String[] args)
Scanner sc=new Scanner(;
System.out.print("Enter no: ");
int num = sc.nextInt();
System.out.println("TalkersCode number entered: "+num);
  1. The import function is first defined as java.util. Scanner
  2. Next, we construct the TalkersCode class.
  3. The Scanner class object is then created.
  4. The nextInt() method is then defined, which reads an integer from the keyboard and puts it in the variable num.
  5. After that, we shut down the scanner.
  6. The number is then printed.
  7. The programme is then closed using system.out.printIn

Conclusion :-

Using the Scanner class in Java is the most common method for reading integers from standard input. We occasionally also read numbers using the BufferedReader class.

It offers many methods for dealing with the various primitive sorts of input.

This part teaches us how to write Java programmes that read numbers from the user using common input methods like the keyboard.

I hope this article on read input from stdin java helps you and the steps and method mentioned above are easy to follow and implement.

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Passionate Electronics and Communication Engineering student with expertise in web development (HTML, CSS, JS,PHP, Bootstrap, React.js) and content writing. Eager problem solver and tech enthusiast, adept at creating engaging web experiences.

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