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Java 使用反射创建多维数组
Java 使用反射创建多维数组
欢马劈雪
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使用反射创建多维数组
实例源码:
源代码:
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import java.lang.reflect.Array; import static java.lang.System.out;/** 来 自 时代Java公众号 - nowjava.com**/ public class CreateMatrix { public static void main(String... args) { Object matrix = Array.newInstance(int.class, 2, 2); Object row0 = Array.get(matrix, 0); Object row1 = Array.get(matrix, 1); Array.setInt(row0, 0, 1); Array.setInt(row0, 1, 2); Array.setInt(row1, 0, 3); Array.setInt(row1, 1, 4); for (int i = 0; i < 2; i++) for (int j = 0; j < 2; j++) out.format("matrix[%d][%d] = %d%n", i, j, ((int[][]) matrix)[i][j]); } } /**时代Java**/ /* * Copyright (c) 1995, 2008, Oracle and/or its affiliates. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * - Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * - Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * - Neither the name of Oracle or the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY 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, /**代码未完, 请加载全部代码(NowJava.com).**/
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执行结果:
matrix[0][0] = 1
matrix[0][1] = 2
matrix[1][0] = 3
matrix[1][1] = 4
本文系作者在时代Java发表,未经许可,不得转载。如有侵权,请联系nowjava@qq.com删除。
编辑于
2020-03-26 09:23:27
2020-03-26 09:23:27
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