Check for character is digit or not.

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Check for character is digit or not.
Posted on: June 28, 2010 at 12:00 AM

This example check for the character is digit or not. It returns Boolean value.

Description:

This tutorial demonstrate the use of Character.isDigit() method which checks whether the value stored in char data-type variable is digit or not.

Code:


public class CheckDigit {

  public static void main(String[] args) {

    char charNoVar = '1';

    if (Character.isDigit(charNoVar)) {

      System.out.println("true");

    } else {

      System.out.println("false");

    }

    char charVar = 'A';

    if (Character.isDigit(charVar)) {

      System.out.println("true");

    } else {

      System.out.println("false");

    }

  }

}

Output:

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