Java String Occurence Count countOccurences(String text, char find)

Description

count Occurences

License

Apache License

Declaration

public static int countOccurences(String text, char find) 

Method Source Code

//package com.java2s;
/*//  www  .j a  va2  s.  c om
 * Copyright [2016] [Mannheim University of Applied Sciences]
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *     http://www.apache.org/licenses/LICENSE-2.0
 *  
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License. 
 */

public class Main {
    public static int countOccurences(String text, char find) {
        if (isEmpty(text))
            return 0;
        int count = 0, offset = 0;
        while ((offset = text.indexOf(find, offset)) != -1) {
            count++;
            offset++;
        }
        return count;
    }

    public static int countOccurences(String text, String find) {
        if (isEmpty(text))
            return 0;
        int count = 0, offset = 0, length = find.length();
        while ((offset = text.indexOf(find, offset)) != -1) {
            count++;
            offset += length;
        }
        return count;
    }

    public static boolean isEmpty(String text) {
        return text == null || text.isEmpty();
    }

    public static int indexOf(Object[] array, Object object) {
        for (int index = 0; index < array.length; index++)
            if (array[index] == object)
                return index;
        return -1;
    }
}

Related

1. countOccurences(String from, String word)
2. countOccurences(String haystack, String needle)
3. countOccurences(String s, char c)
4. countOccurences(String str, int ch)
5. countOccurences(String str, String subStr)
6. countOccurences(String text, String subtext)
7. countOccurences(String text, String target)
8. countOccurences(String textToSearch, String pattern)
9. countOccurencesOfChar(String str, char charToCount)