Version checking basic

Utils.java

    /**
     * Use this method to compare if the latest version is newer than current version or not.
     * @param currentVersion current version
     * @param latestVersion latest version
     * @return true if newer
     */
    public boolean isNewerVersion(String currentVersion, String latestVersion){
        boolean result = false;

        if(currentVersion == null){
            currentVersion = "0";
        }

        if(latestVersion == null){
            latestVersion = "0";
        }

        int cPos = currentVersion.indexOf(".");
        String curr = null;
        if(cPos < 0){
            curr = currentVersion;
        }else{
            curr = currentVersion.substring(0, cPos);
        }

        int lPos = latestVersion.indexOf(".");
        String latest = null;
        if(lPos < 0){
            latest = latestVersion;
        }else{
            latest = latestVersion.substring(0, lPos);
        }

        int c = Integer.parseInt(curr);
        int l = Integer.parseInt(latest);

        if(c < l){
            return true;
        }else if(c == l && (cPos > 0 || lPos > 0)){

            String cNext = (cPos > 0 ? currentVersion.substring(cPos+1): null);
            String lNext = (lPos > 0 ? latestVersion.substring(lPos+1): null);
            result = isNewerVersion(cNext, lNext);
        }

        return result;
    }


    public static void main(String[] args) throws Exception{
        Utils u = new Utils();
        System.out.println("true: " + u.isNewerVersion("1.0", "1.0.2"));
        System.out.println("true: " + u.isNewerVersion("1.0", "1.0.5"));
        System.out.println("true: " + u.isNewerVersion("1.0.2", "1.0.3"));
        System.out.println("true: " + u.isNewerVersion("1.0.5", "1.0.10"));
        System.out.println("true: " + u.isNewerVersion("1.2", "1.12"));
        System.out.println("false: " + u.isNewerVersion("1.2", "1.1"));
        System.out.println("false: " + u.isNewerVersion("1.2.1", "1.2.1"));
        System.out.println("false: " + u.isNewerVersion("1.1", "1.0.10"));
    }