Here you can find the source of countCharacter(String content, char character)
public static int countCharacter(String content, char character)
//package com.java2s; /*-------------------------------------------------------------------------+ | | | Copyright 2005-2011 The ConQAT Project | | | | 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 { /**/*from w ww. j av a 2 s . c o m*/ * Returns the number of occurrences of the given character in the given * string. */ public static int countCharacter(String content, char character) { int count = 0; for (char c : content.toCharArray()) { if (c == character) { count++; } } return count; } }