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

Download this code

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Posted on: June 28, 2010

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