Here you can find the source of fill(final T[] array, final int size)
public static <T> T[] fill(final T[] array, final int size)
//package com.java2s; /******************************************************************************* * Copyright (c) 2015, 2017 Lablicate GmbH. * * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors://from w w w .jav a 2 s.co m * Dr. Alexander Kerner - initial API and implementation *******************************************************************************/ import java.util.Arrays; public class Main { public static <T> T[] fill(final T[] array, final int size) { if (array.length >= size) { return array; } final T[] result = Arrays.copyOf(array, size); return result; } }