Java tutorial
//package com.java2s; /* * Copyright 2001-2006 The Apache Software Foundation. * * 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. */ import java.math.BigDecimal; public class Main { public static String nullConvert(Object src) { //if (src != null && src.getClass().getName().equals("java.math.BigDecimal")) { if (src != null && src instanceof java.math.BigDecimal) { return ((BigDecimal) src).toString(); } if (src == null || src.equals("null")) { return ""; } else { return ((String) src).trim(); } } public static String nullConvert(String src) { if (src == null || src.equals("null") || "".equals(src) || " ".equals(src)) { return ""; } else { return src.trim(); } } }