Here you can find the source of format(BigDecimal data)
public static String format(BigDecimal data)
//package com.java2s; /*/*from w ww. j av a 2 s . co m*/ * Copyright (C) 2010-2101 Alibaba Group Holding Limited. * * 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; import java.math.BigInteger; import java.text.DecimalFormat; import java.text.SimpleDateFormat; import java.util.Date; public class Main { private static final String PATTERN = "#,###.###"; public static String format(Double data) { if (data == null) { return null; } DecimalFormat format = new DecimalFormat(PATTERN); return format.format(data); } public static String format(Integer data) { if (data == null) { return null; } DecimalFormat format = new DecimalFormat(PATTERN); return format.format(data); } public static String format(Long data) { if (data == null) { return null; } DecimalFormat format = new DecimalFormat(PATTERN); return format.format(data); } public static String format(BigDecimal data) { if (data == null) { return null; } DecimalFormat format = new DecimalFormat(PATTERN); return format.format(data); } public static String format(BigInteger data) { if (data == null) { return null; } DecimalFormat format = new DecimalFormat(PATTERN); return format.format(data); } public static String format(Date date) { if (date == null) { return null; } SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); return format.format(date); } public static String format(java.sql.Date date) { if (date == null) { return null; } SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd"); return format.format(date); } public static String format(java.sql.Time time) { if (time == null) { return null; } SimpleDateFormat format = new SimpleDateFormat("HH:mm:ss"); return format.format(time); } public static String format(java.sql.Timestamp timestamp) { if (timestamp == null) { return null; } SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss:fffffffff"); return format.format(timestamp); } }