BE THE CODER > Tools and Libs > Commons Lang3 Examples > Strings

Apache Commons Lang 3.0 is a java library with lot of utilities and reusable components. This requires the library commons-lang3-3.0.1.jar to be in classpath. The following example shows using StringUtils.isNumeric() API. It returns TRUE if the given string contains only numeric characters.

File Name :	com/bethecoder/tutorials/commons_lang/tests/strings/IsNumericTest.java
Author :	Sudhakar KV
Email :	[email protected]


package com.bethecoder.tutorials.commons_lang.tests.strings;



import org.apache.commons.lang3.StringUtils;



public class IsNumericTest {



  /**

   * @param args

   */

  public static void main(String[] args) {

         

    System.out.println(StringUtils.isNumeric(null));

    System.out.println(StringUtils.isNumeric(""));

    System.out.println(StringUtils.isNumeric("be the coder"));

    System.out.println(StringUtils.isNumeric("1234"));

    System.out.println(StringUtils.isNumeric("1234.45"));

  }



}

Is Numeric