Here you can find the source of format(String message, Object... params)
public static String format(String message, Object... params)
//package com.java2s; /**// w ww .j a v a 2 s .c om * Copyright 2016 the Rex-Soft Group. * * 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.MessageFormat; public class Main { /** * Formats the message with the given arguments. * sample: format("Hello {0}!", "World"); -> Hello World */ public static String format(String message, Object... params) { if (params != null && params.length > 0) return MessageFormat.format(message, params); else return message; } }