java数组操作

package com.array;import java.util.Arrays;public class TestArray {public static void main(String[] args) {outPutArr();}/** * 数组声明 */public static void declareArr() {//1.声明的时候指定数组大小会出错//int[3] iarr = new int[3];int[] iArr1 = new int[3];//2.多维数组不必须是规则矩阵形式int[][] iArr2 = new int[1][];int[] iarr3 = new int[4];iArr2[0] = iarr3;}/** * 数组复制 */public static void copyArr() {int source[] = {1,2,3,4,5};int dest[] = {10,11,12,13,14};System.arraycopy(source, 2, dest, 1, 2);}/** * 数组打印 */public static void outPutArr() {int[][] iarr = new int[1][1];int[] iiarr = {1,2};iarr[0] = iiarr;System.out.println(Arrays.toString(iarr[0]));}}