Java Char Count countCharacter(final String sourceString, final char lookFor)

Description

count Character

License

Open Source License

Parameter

Parameter	Description
sourceString	a parameter
lookFor	a parameter

Return

Returns the number of characters which are found in the string or -1 when the string is null

Declaration

public static int countCharacter(final String sourceString, final char lookFor) 

Method Source Code

//package com.java2s;
/*******************************************************************************
 * Copyright (C) 2005, 2016 Wolfgang Schramm and Contributors
 *
 * This program is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License as published by the Free Software
 * Foundation version 2 of the License./*from w  w  w. j av a 2s.  c o  m*/
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110, USA
 *******************************************************************************/

public class Main {
    /**
     * @param sourceString
     * @param lookFor
     * @return Returns the number of characters which are found in the string or -1 when the string
     *         is <code>null</code>
     */
    public static int countCharacter(final String sourceString, final char lookFor) {

        if (sourceString == null) {
            return -1;
        }

        int count = 0;

        for (int i = 0; i < sourceString.length(); i++) {
            final char c = sourceString.charAt(i);
            if (c == lookFor) {
                count++;
            }
        }

        return count;
    }
}

Related

1. countChar(final int[] locator, final char c)
2. countChar(final String aString, final char aChar)
3. countChar(final String host, final char charactor)
4. countChar(int start_index, int end_index, StringBuffer txt, char c)
5. countChar(String a_text, char a_character)
6. countCharacter(String content, char character)
7. countCharacterOccurrences(String string, char c)
8. countCharacters(String code, char c, int start, int end)
9. countCharacters(String str, char chr)