Here you can find the source of removeNulls(Collection p_collection)
Parameter | Description |
---|---|
p_collection | a Collection |
public static boolean removeNulls(Collection p_collection)
//package com.java2s; /**// ww w . j a v a 2s .c o m * Copyright 2009 Welocalize, Inc. * * 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.util.Collection; import java.util.Iterator; import java.util.List; import java.util.ArrayList; public class Main { /** * Removes null objects from the Collection. * @param p_collection a Collection * @returns true if one or more null objects were removed. */ public static boolean removeNulls(Collection p_collection) { if (p_collection == null) { return false; } boolean removed = false; Iterator it = p_collection.iterator(); while (it.hasNext()) { Object o = it.next(); if (o == null) { removed = true; it.remove(); } } return removed; } /** * Removes the element at the specified position in * the collection. * Shifts any subsequent elements to the left * (subtracts one from their indices). * Returns the element that was removed from the Collection. * @param p_collection a Collection * @param p_index the index of the element to removed. * @param p_numberOfObjects the number of objects to remove. * @returns a collection with the elements at p_index removed. */ public static Collection remove(Collection p_collection, int p_index, int p_numberOfObjects) { if (p_collection == null) { return null; } List returnList = new ArrayList(p_collection.size() - p_numberOfObjects); Iterator it = p_collection.iterator(); for (int i = 0; it.hasNext(); i++) { if (i < p_index || i >= p_index + p_numberOfObjects) { returnList.add(it.next()); } else { it.next(); } } return returnList; } }