Here you can find the source of toLong(String s)
private static Long toLong(String s)
//package com.java2s; /**//from w ww . j a va 2 s . com * XTokenUtil.java * * Copyright 2017 the original author or authors. * * We licenses this file to you under the Apache License, version 2.0 * (the "License"); you may not use this file except in compliance with the * License. You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations * under the License. */ public class Main { private static Long toLong(String s) { return s.length() == 0 ? null : Long.parseLong(s, 32); } }