Arrays类

package com.kuang.Array;

import java.util.Arrays;

public class ArrayDemo06 {
    public static void main(String[] args) {
        int[] a = {1, 2, 3, 4, 9090, 32231, 543, 21, 3, 23};
        //System.out.println(a);//[I@4554617c
        //打印数组元素
        System.out.println(Arrays.toString(a));
        printArray(a);
    }

    public static void printArray(int[] a) {
        for (int i = 0; i < a.length; i++) {
            if (i == 0) {
                System.out.print("[");
            }
            if (i == a.length - 1) {
                System.out.print(a[i] + "]");
            } else {
                System.out.print(a[i] + ", ");
            }
        }
    }
}

运行结果