Count the number of instances of substring within a string : String substring « Data Type « Java

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Java » Data Type » String substringScreenshots 
Count the number of instances of substring within a string
  

/*
  * JBoss, Home of Professional Open Source
  * Copyright 2005, JBoss Inc., and individual contributors as indicated
  * by the @authors tag. See the copyright.txt in the distribution for a
  * full listing of individual contributors.
  *
  * This is free software; you can redistribute it and/or modify it
  * under the terms of the GNU Lesser General Public License as
  * published by the Free Software Foundation; either version 2.1 of
  * the License, or (at your option) any later version.
  *
  * This software is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this software; if not, write to the Free
  * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
  */



public class Main{


  /////////////////////////////////////////////////////////////////////////
  //                          Counting Methods                           //
  /////////////////////////////////////////////////////////////////////////

  /**
   * Count the number of instances of substring within a string.
   *
   @param string     String to look for substring in.
   @param substring  Sub-string to look for.
   @return           Count of substrings in string.
   */
  public static int count(final String string, final String substring)
  {
     int count = 0;
     int idx = 0;

     while ((idx = string.indexOf(substring, idx)) != -1)
     {
        idx++;
        count++;
     }

     return count;
  }

  /**
   * Count the number of instances of character within a string.
   *
   @param string     String to look for substring in.
   @param c          Character to look for.
   @return           Count of substrings in string.
   */
  public static int count(final String string, final char c)
  {
     return count(string, String.valueOf(c));
  }

}

   
    
  
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