Java String Match Count countMatches(final CharSequence seq, final char c)

Description

count Matches

License

Apache License

Declaration

public static int countMatches(final CharSequence seq, final char c) 

Method Source Code

//package com.java2s;
/*//from w  ww .j  a va 2 s  .  co m
 *     Copyright 2015-2017 Austin Keener & Michael Ritter & Florian Spie?
 *
 * 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 countMatches(final CharSequence seq, final char c) {
        if (isEmpty(seq))
            return 0;
        int count = 0;
        for (int i = 0; i < seq.length(); i++) {
            if (seq.charAt(i) == c)
                count++;
        }
        return count;
    }

    public static boolean isEmpty(final CharSequence seq) {
        return seq == null || seq.length() == 0;
    }
}

Related

1. countMatches(CharSequence str, CharSequence sub)
2. countMatches(final CharSequence str, final char ch)
3. countMatches(final CharSequence str, final CharSequence sub)
4. countMatches(final CharSequence str, final CharSequence sub)
5. countMatches(final CharSequence str, final CharSequence sub)