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 Tools and Libs > Google Guava > Basic > DIGIT Char Matcher

DIGIT Char Matcher 

Google Guava is a java library with lot of utilities and reusable components. This requires the library guava-10.0.jar to be in classpath. The following example shows using CharMatcher.DIGIT char matcher which returns TRUE if the given character is a DIGIT.

File Name  :  
com/bethecoder/tutorials/guava/base_tests/DigitCharMatcherTest.java 
Author  :  Sudhakar KV
Email  :  kvenkatasudhakar@gmail.com
   
package com.bethecoder.tutorials.guava.base_tests;

import com.google.common.base.CharMatcher;

public class DigitCharMatcherTest {

  /**
   @param args
   */
  public static void main(String[] args) {
    System.out.println(CharMatcher.DIGIT.apply('a'));
    System.out.println(CharMatcher.DIGIT.apply('0'));
    System.out.println(CharMatcher.DIGIT.apply('1'));
    System.out.println(CharMatcher.DIGIT.apply('9'));
  }

}
   

It gives the following output,
false
true
true
true


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