Here you can find the source of nvl(Object source, Object alernative)
public static Object nvl(Object source, Object alernative)
//package com.java2s; /**/*from w ww.j a v a2 s . c om*/ * Copyright (c) 2015 SK holdings Co., Ltd. All rights reserved. * This software is the confidential and proprietary information of SK holdings. * You shall not disclose such confidential information and shall use it only in * accordance with the terms of the license agreement you entered into with SK holdings. * (http://www.eclipse.org/legal/epl-v10.html) */ public class Main { public static Object nvl(Object source, Object alernative) { if (source == null) { return alernative; } return source; } }