Java String Split by Separator split(final String str, final char separatorChar)

Description

split

License

Apache License

Declaration

public static String[] split(final String str, final char separatorChar) 

Method Source Code

//package com.java2s;
//License from project: Apache License 

import java.util.ArrayList;

import java.util.List;

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

    public static String[] split(final String str, final char separatorChar) {
        if (str == null) {
            return null;
        }//ww w . j a  va2  s . c om
        final int len = str.length();
        if (len == 0) {
            return EMPTY_STRING_ARRAY;
        }
        final List<String> list = new ArrayList<>();
        int i = 0, start = 0;
        boolean match = false;
        while (i < len) {
            if (str.charAt(i) == separatorChar) {
                if (match) {
                    list.add(str.substring(start, i));
                    match = false;
                }
                start = ++i;
            } else {
                match = true;
                i++;
            }
        }
        if (match) {
            list.add(str.substring(start, i));
        } else if (list.isEmpty()) {
            return EMPTY_STRING_ARRAY;
        }
        return list.toArray(new String[list.size()]);
    }

    public static boolean isEmpty(String str) {
        return str == null || str.isEmpty();
    }
}

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