Count of Matches 

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.countMatches() API. It returns the count of matches of the sub sequence in the given char sequence.

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

package com.bethecoder.tutorials.commons_lang.tests.strings; import org.apache.commons.lang3.StringUtils; public class CountMatchesTest {   /**    * @param args    */   public static void main(String[] args) {               System.out.println(StringUtils.countMatches(null, "ab"));     System.out.println(StringUtils.countMatches("", "ab"));     System.out.println(StringUtils.countMatches("abcaabbabbcaabb", "ab"));     System.out.println(StringUtils.countMatches("abcaabbabbcaabb", ""));     System.out.println(StringUtils.countMatches("abcaabbabbcaabb", "xy"));     System.out.println(StringUtils.countMatches("zxyxzyzxyz", "xy"));   } }

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