Here you can find the source of format(Number value)
public static String format(Number value)
//package com.java2s; /**/*from w w w. j av a 2s . co m*/ * jetbrick-template * http://subchen.github.io/jetbrick-template/ * * Copyright 2010-2014 Guoqiang Chen. All rights reserved. * Email: subchen@gmail.com * * 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.text.DecimalFormat; public class Main { private static final String DEFAULT_NUMBER_FORMAT = "###,##0.00"; public static String format(Number value, String format) { return value == null ? null : new DecimalFormat(format).format(value); } public static String format(Number value) { return format(value, DEFAULT_NUMBER_FORMAT); } }