Here you can find the source of of(String... elements)
public static String[] of(String... elements)
//package com.java2s; /*//from www .j a v a 2 s .co m * Copyright (C) 2012 Brian Muramatsu * * 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. */ public class Main { public static String[] of(long oneLong) { return new String[] { Long.toString(oneLong) }; } public static String[] of(long oneLong, String element) { return new String[] { Long.toString(oneLong), element }; } public static String[] of(int oneInt, String element) { return new String[] { Integer.toString(oneInt), element }; } public static String[] of(String... elements) { return elements; } }