Char Matcher Negate 

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.negate() API. It returns a char matcher that matches any character not matched by the current matcher.

File Name  :   com/bethecoder/tutorials/guava/base_tests/CharMatcherNegateTest.java  Author  :   Sudhakar KV Email  :   [email protected]

package com.bethecoder.tutorials.guava.base_tests; import com.google.common.base.CharMatcher; public class CharMatcherNegateTest {   /**    * @param args    */   public static void main(String[] args) {     System.out.println(CharMatcher.is('a').negate().matches('a'));     System.out.println(CharMatcher.is('a').negate().matches('1'));     System.out.println(CharMatcher.is('a').negate().matches('@'));          System.out.println(CharMatcher.anyOf("abc123").negate().matches('1'));     System.out.println(CharMatcher.anyOf("abc123").negate().matches('a'));     System.out.println(CharMatcher.anyOf("abc123").negate().matches('z'));     System.out.println(CharMatcher.anyOf("abc123").negate().matches('9'));   } }

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