Here you can find the source of unshift(String[] array, String newElem)
newElem to the array, shifting all elements one index up.
public static String[] unshift(String[] array, String newElem)
//package com.java2s; /*/*from ww w .ja va2 s . c o m*/ * This file is part of ROOSSTER. * Copyright 2004, Benjamin Reitzammer <benjamin@roosster.org> * All rights reserved. * * ROOSSTER is free software; you can redistribute it and/or modify * it under the terms of the Artistic License. * * You should have received a copy of the Artistic License * along with ROOSSTER; if not, go to * http://www.opensource.org/licenses/artistic-license.php for details * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO * EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ import java.util.ArrayList; import java.util.Arrays; import java.util.List; public class Main { /** * prepends <code>newElem</code> to the array, shifting all elements one index up. */ public static String[] unshift(String[] array, String newElem) { List arr = new ArrayList(Arrays.asList(array)); arr.add(0, newElem); return (String[]) arr.toArray(new String[0]); } }