Java 数组

package com.pl;

public class array_s {
    public static void main(String[] args) {
        //java中不定长数组的一些方法
        //ArrayList array = new ArrayList();
        //String s = array.get(0);  //获取
        //array.remove(m);  //删除
        //array.add(s);   //添加
        //array.add("xxxxxx");

        //=========================================
        //先声明，后指明长度
//        int[] arr1;
//        //arr1 = new int[3];
//
//        int[] arr1x;
//        arr1x = new int[]{11, 22, 33, 44, 55};
//
//        //声明的同时直接指明长度
//        int[] arr2 = new int[3];
//
//        //创建的同时直接赋值
//        int[] arr3 = new int[]{11, 22, 33, 44, 55};
//        int[] arr3x = {11, 22, 33, 44, 55};


        int[] arr3x = {11, 22, 33, 44, 55};
        int[] arr3xv = arr3x;
        arr3xv[0] = 99;
        for (int i = 0; i < arr3x.length; i++) {
            System.out.printf("\n" + arr3x[i]);
        }


    }
}