Java String Sub String substrCount(String haystack, String needle)

Description

Returns the count of the substring

License

Open Source License

Declaration

public static int substrCount(String haystack, String needle) 

Method Source Code

//package com.java2s;
/*//from   w  w w .  j a  va  2  s . com
 * Syncany, www.syncany.org
 * Copyright (C) 2011-2015 Philipp C. Heckel <philipp.heckel@gmail.com> 
 *
 * 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, either version 3 of the License, or
 * (at your option) any later version.
 *
 * 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, see <http://www.gnu.org/licenses/>.
 */

public class Main {
    /**
     * Returns the count of the substring 
     */
    public static int substrCount(String haystack, String needle) {
        int lastIndex = 0;
        int count = 0;

        if (needle != null && haystack != null) {
            while (lastIndex != -1) {
                lastIndex = haystack.indexOf(needle, lastIndex);

                if (lastIndex != -1) {
                    count++;
                    lastIndex += needle.length();
                }
            }
        }

        return count;
    }
}

Related

1. substractPrefixPostfix(Object obj, String prefix, String suffix)
2. subStrBeforeDotNotIncludeDot(String str)
3. subStrByBytes(String str, int len, String tail)
4. substrByLength(String str, int start, int size, String markCode)
5. subStrBytes2(String str, int byteLength)
6. subStrIfNeed(final String str, int num)
7. substring(byte[] array, int start)
8. substring(byte[] src, int start, int len)
9. substring(char[] s, int start, int end)