Version#toVersion(String).java

static public final Version toVersion(String s) {
	final long major, minor, patch;
	try {
		String[] mainPart = s.split('[' + Pattern.quote(Version.PRERELEASE_PREFIX + Version.BUILD_PREFIX) + ']')[0].split(Pattern.quote(Version.VERSION_SEPARATOR));
		major = Long.parseLong(mainPart[0]);
		minor = Long.parseLong(mainPart[1]);
		patch = Long.parseLong(mainPart[2]);
	} catch (NumberFormatException nfe) {
		nfe.printStackTrace();
		return null;
	}
	List<String> prerelease = null;
	List<String> build = null;
	final int prereleaseIndex = s.indexOf(Version.PRERELEASE_PREFIX);
	final int buildIndex = s.indexOf(Version.BUILD_PREFIX);
	if (s.contains(Version.PRERELEASE_PREFIX)) {
		prerelease = Arrays.asList(s.substring(prereleaseIndex + 1, buildIndex != -1 ? buildIndex : s.length()).split(Pattern.quote(Version.IDENTIFIER_SEPARATOR)));
	}
	if (s.contains(Version.BUILD_PREFIX)) {
		build = Arrays.asList(s.substring(buildIndex + 1).split(Pattern.quote(Version.IDENTIFIER_SEPARATOR)));
	}
	return new Version(major, minor, patch, prerelease, build);
}