BE THE CODER > Tools and Libs > Jodd > Strings > How to check if a string contains only digits

Jodd is an open-source java library with lot of reusable components and feature rich utilities. This requires the library jodd-3.3.2.jar to be in classpath. The following example shows how to verify whether the given string contains only digits using StringUtil.containsOnlyDigits() API.

File Name :	com/bethecoder/tutorials/jodd/utils/StringContainsOnlyDigitsTest.java
Author :	Sudhakar KV
Email :	[email protected]


package com.bethecoder.tutorials.jodd.utils;



import jodd.util.StringUtil;



public class StringContainsOnlyDigitsTest {



  /**

   * @param args

   */

  public static void main(String[] args) {

    System.out.println(StringUtil.containsOnlyDigits("  "));

    System.out.println(StringUtil.containsOnlyDigits("123456"));

    System.out.println(StringUtil.containsOnlyDigits("   786  "));

    System.out.println(StringUtil.containsOnlyDigits("ABCD"));

    System.out.println(StringUtil.containsOnlyDigits("1234"));

  }



}