调用Scanner向数组中新增元素,该如何解决

package Community;import java.util.Scanner;import User.DbStore;public class temp {    public static void main(String args[])    {        DbStore abcd = new DbStore();                Scanner scan = new Scanner(System.in);                System.out.println("请输入小区编号：");        String id = scan.next();        System.out.println("请输入小区名称：");        String name = scan.next();        System.out.println("请输入小区经理：");        String manager = scan.next();        System.out.println("请输入所在区域：");        String area = scan.next();        System.out.println("请输入小区状态：");        String statue = scan.next();        System.out.println("请输入渗透率：");        double Permeability = scan.nextDouble();        System.out.println("请输入覆盖用户数：");        int userCount = scan.nextInt();                int last = abcd.getCommArr().length+1;                abcd.getCommArr()[last].setCommId(id);        abcd.getCommArr()[last].setCommName(name);        abcd.getCommArr()[last].setCommManager(manager);        abcd.getCommArr()[last].setCommArea(area);        abcd.getCommArr()[last].setCommStatue(statue);        abcd.getCommArr()[last].setPermeability(Permeability);        abcd.getCommArr()[last].setUserCount(userCount);                System.out.println("新增成功！");        System.out.println("该社区信息如下："+"\n");        System.out.println("小区编号"+"\t\t"+"小区名称"+"\t\t"+"小区经理"+"\t\t"+"区域"+"\t\t"+"小区状态"+"\t\t"+"渗透率"+"\t\t"+"覆盖用户数");        System.out.println("----------------------------------------------------------------------");        System.out.println(abcd.getCommArr()[last].getCommId()+"\t\t"+abcd.getCommArr()[last].getCommName()+"\t\t"+abcd.getCommArr()[last].getCommManager()+"\t\t"+abcd.getCommArr()[last].getCommArea()+"\t\t"+abcd.getCommArr()[last].getCommStatue()+"\t\t"+abcd.getCommArr()[last].getPermeability()+"%"+"\t\t"+abcd.getCommArr()[last].getUserCount());    }}

新增元素不能这么写的...public  static int[] add(int[] arr,int b)    {        int[] c = new int[arr.length+1];        for(int i=0;i<arr.length;i++)        {            c[i]=arr[i];        }        c[arr.length] = b;        return c;    }