Java学习-将Vector转化为数组

将vector集合转化为二维数组

public static void main(String[] args) {        //将集合添加到数组中        Vector vector = new Vector();        int[] a1 = {1, 2, 3};        int[] a2 = {4, 5, 6};        int[] a3 = {7, 8, 9};        vector.addElement(a1);        vector.addElement(a2);        vector.addElement(a3);        int[][] temp = new int[3][3];        //copy this vector into Array        vector.copyInto(temp);        //test        for (int i = 0; i < 3; i++) {            for (int j = 0; j < 3; j++) {                System.out.println(temp[i][j]);            }        }    }

运行结果：

123456789