Java String Split by Delimiter split(String str, String delimiter)

Description

Splits "string" by "Delimiter"

License

Open Source License

Parameter

Parameter	Description
str	- the string to be split
delimiter	- the field delimiter within str

Declaration

public static String[] split(String str, String delimiter) 

Method Source Code

//package com.java2s;
/*/*w ww  .  j av a  2s  .  c o  m*/
 This file is part of the BlueJ program. 
 Copyright (C) 1999-2009,2011,2012,2013,2014,2015  Michael Kolling and John Rosenberg 
    
 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 2 
 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, write to the Free Software 
 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA. 
    
 This file is subject to the Classpath exception as provided in the  
 LICENSE.txt file that accompanied this code.
 */

import java.util.ArrayList;

import java.util.List;

public class Main {
    /**
     * Splits "string" by "Delimiter"
     * 
     * @param str - the string to be split
     * @param delimiter - the field delimiter within str
     * @returns an array of Strings
     */
    public static String[] split(String str, String delimiter) {
        List<String> strings = new ArrayList<String>();
        int start = 0;
        int len = str.length();
        int dlen = delimiter.length();
        int offset = str.lastIndexOf(delimiter); // First of all, find the
        // Last occurance of the Delimiter
        // Stop empty delimiters
        if (dlen < 1)
            return null;
        else if (offset < 0) // one element
        {
            String[] result = { str };
            return result;
        }

        //
        // Append the delimiter onto the end if it doesn't already exit
        //
        if (len > offset + dlen) {
            str += delimiter;
            len += dlen;
        }

        do {
            // Get the new Offset
            offset = str.indexOf(delimiter, start);
            strings.add(str.substring(start, offset));

            // Get the new Start position
            start = offset + dlen;
        } while ((start < len) && (offset != -1));

        // Convert the list into an Array of Strings
        String result[] = new String[strings.size()];
        strings.toArray(result);
        return result;
    }
}

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