Efficient way to compare version strings in Java [duplicate]

Answer 1

This is almost certainly not the most efficient way to do it, but given that version number strings will almost always be only a few characters long I don't think it's worth optimizing further:

public static int compareVersions(String v1, String v2) {
    String[] components1 = v1.split("\\.");
    String[] components2 = v2.split("\\.");
    int length = Math.min(components1.length, components2.length);
    for(int i = 0; i < length; i++) {
        int result = new Integer(components1[i]).compareTo(Integer.parseInt(components2[i]));
        if(result != 0) {
            return result;
        }
    }
    return Integer.compare(components1.length, components2.length);
}