Java tutorial
//package com.java2s; /* * Copyright (C) 2009 Trustees of the University of Pennsylvania * * 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 static com.google.common.base.Preconditions.checkArgument; import static com.google.common.base.Preconditions.checkNotNull; import java.util.Collection; import javax.annotation.Nonnegative; public class Main { public static <T> void nullFill(final Collection<T> coll, @Nonnegative final int size) { checkNotNull(coll); checkArgument(size >= 0, "size is negative"); while (coll.size() < size) { coll.add(null); } } }