Here you can find the source of toLong(Integer i)
public static Long toLong(Integer i)
//package com.java2s; /*/*from w ww . j ava 2 s . c o m*/ * Copyright (c) 2010-2013 Evolveum * * Licensed 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 { public static Long toLong(Short s) { if (s == null) { return null; } return s.longValue(); } public static Long toLong(Integer i) { if (i == null) { return null; } return i.longValue(); } }