Java String Split by Delimiter split(String s, char delimiter)

Description

split

License

Open Source License

Declaration

public static String[] split(String s, char delimiter) 

Method Source Code

//package com.java2s;
/**// ww  w . jav a 2s  .c  o  m
 * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 *
 * This library 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 Lesser General Public License for more
 * details.
 */

import java.util.ArrayList;

import java.util.List;

public class Main {
    private static final String[] _emptyStringArray = new String[0];

    public static String[] split(String s, char delimiter) {
        s = s.trim();

        if (s.isEmpty()) {
            return _emptyStringArray;
        }

        List<String> values = new ArrayList<>();

        int offset = 0;
        int pos = s.indexOf(delimiter, offset);

        while (pos != -1) {
            values.add(s.substring(offset, pos));

            offset = pos + 1;
            pos = s.indexOf(delimiter, offset);
        }

        if (offset < s.length()) {
            values.add(s.substring(offset));
        }

        return values.toArray(new String[values.size()]);
    }

    public static String[] split(String s, String delimiter) {
        if ((delimiter == null) || delimiter.equals("")) {
            return _emptyStringArray;
        }

        s = s.trim();

        if (s.equals(delimiter)) {
            return _emptyStringArray;
        }

        if (delimiter.length() == 1) {
            return split(s, delimiter.charAt(0));
        }

        List<String> nodeValues = new ArrayList<>();

        int offset = 0;
        int pos = s.indexOf(delimiter, offset);

        while (pos != -1) {
            nodeValues.add(s.substring(offset, pos));

            offset = pos + delimiter.length();
            pos = s.indexOf(delimiter, offset);
        }

        if (offset < s.length()) {
            nodeValues.add(s.substring(offset));
        }

        return nodeValues.toArray(new String[nodeValues.size()]);
    }
}

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