Java 从数组中移除元素。
从数组中删除一个元素。
实例源码：
源代码：
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/*from nowjava - 时 代 Java*/2
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/** 4
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* The contents of this file are subject to the Mozilla Public6
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* License Version 1.1 (the "License"); you may not use this file8
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* except in compliance with the License. You may obtain a copy of10
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* the License at http://www.mozilla.org/MPL/12
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* 14
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* Software distributed under the License is distributed on an "AS16
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or18
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* implied. See the License for the specific language governing20
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* rights and limitations under the License.22
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* 24
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* The Initial Developer of this code is Technology Concepts 26
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* and Design, Inc. 28
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* Copyright (C) 2000 Technology Concepts and Design, Inc. All30
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* Rights Reserved.32
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* 34
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* Contributor(s): Eric B. Ridge (Technology Concepts and Design, Inc.)36
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*38
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* Alternatively, the contents of this file may be used under the40
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* terms of the GNU General Public License Version 2 or later (the42
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* "GPL"), in which case the provisions of the GPL are applicable 44
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* instead of those above. If you wish to allow use of your 46
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* version of this file only under the terms of the GPL and not to48
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* allow others to use your version of this file under the MPL,50
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* indicate your decision by deleting the provisions above and52
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* replace them with the notice and other provisions required by54
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* the GPL. If you do not delete the provisions above, a recipient56
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* may use your version of this file under either the MPL or the58
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* GPL.60
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* 62
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*/64
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//package com.nowjava;66
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public class Main {69
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public static void main(String[] argv) throws Exception {71
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Object[] array = new String[] { "1", "abc", "level", null,73
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"nowjava.com", "asdf 123" };75
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int idx = 2;77
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System.out.println(removeIndex(array, idx));79
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}81
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/**84
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* Remove an element from an array.86
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* 88
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* @param array the array to remove an element from90
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* @param idx the index of the element to remove92
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* 94
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* @return a new array containing all objects, less object at position idx. Castable into type of array[0]96
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*/98
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public static Object removeIndex(Object[] array, int idx) {100
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if (idx < 0 || idx >= array.length)102
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throw new IndexOutOfBoundsException("" + idx104
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+ " not within [0, " + array.length + "]");106
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if (array.length == 0)108
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