@@ -0,0 +1,591 @@
+package com.dreamfighter.android.utils;%0A%0A/**%0A * Created by zeger on 13/01/18.%0A */%0A%0Apublic class NumberUtils %7B%0A    public static boolean isInteger(String s) %7B%0A        return isInteger(s,10);%0A    %7D%0A%0A    public static boolean isInteger(String s, int radix) %7B%0A        if(s.isEmpty()) return false;%0A        for(int i = 0; i %3C s.length(); i++) %7B%0A            if(i == 0 && s.charAt(i) == '-') %7B%0A                if(s.length() == 1) return false;%0A                else continue;%0A            %7D%0A            if(Character.digit(s.charAt(i),radix) %3C 0) return false;%0A        %7D%0A        return true;%0A    %7D%0A%0A%7D%0A

add NumberUtils