Java Program to read integer value from the Standard Input

In this program we will see how to read an integer number entered by user. Scanner class is in java.util package. It is used for capturing the input of the primitive types like int, double etc. and strings.

Example: Program to read the number entered by user

We have imported the package java.util.Scanner to use the Scanner. In order to read the input provided by user, we first create the object of Scanner by passing System.in as parameter. Then we are using nextInt() method of Scanner class to read the integer. If you are new to Java and not familiar with the basics of java program then read the following topics of Core Java:
→ Writing your First Java Program
→ How JVM works

import java.util.Scanner;

public class Demo {

    public static void main(String[] args) {

        /* This reads the input provided by user
         * using keyboard
         */
        Scanner scan = new Scanner(System.in);
        System.out.print("Enter any number: ");

        // This method reads the number provided using keyboard
        int num = scan.nextInt();

        // Closing Scanner after the use
        scan.close();
        
        // Displaying the number 
        System.out.println("The number entered by user: "+num);
    }
}

Output:

Enter any number: 101
The number entered by user: 101