walk a string and separate it based on separator and a marker that is supposed to be in every string

CustomStringSplit.java

package example;

import java.util.ArrayList;
import java.util.List;

public class CustomStringSplit {

	public static void main(String[] args) {
		String string = "Key1==value1; key2==val;ue2;key3==value3";
		String separator = ";";
		String marker = "==";
		List<String> splitted = Split(string, separator, marker);
		for (String element : splitted) {
			System.out.println(element);
		}
	}

	private static List<String> Split(String string, String separator, String marker) {
		List<String> list = new ArrayList<String>();
		int start = 0;
		int endIndex = string.indexOf(separator);
		String previousString = null;
		while (endIndex != -1) {
			String str = string.substring(start, endIndex);
			if (previousString != null && !str.contains(marker)) {
				list.remove(list.size() - 1);
				list.add(previousString + str);
				start = start + str.length();
				endIndex = string.indexOf(separator, start + 1);
				previousString = previousString + str;
				continue;
			}
			previousString = str;
			start = string.indexOf(separator, start + str.length());
			endIndex = string.indexOf(separator, start + 1);
			list.add(str.trim());
		}
		list.add(string.substring(start));
		return list;
	}

}