判断回文数

/*该程序主要判断一个数是不是回文数
 * 结果首先输出这个数十几位数
 * 再输出是不是回文数
 */

import javax.swing.JOptionPane;

public class Number
{
    public static void main(String args[])
    {
         int number=0,d5,d4,d3,d2,d1;

         String str=JOptionPane.showInputDialog("输入一个1至99999之间的数");

         number=Integer.parseInt(str);

         if(number>=1&&number<=99999) //判断number在1至99999之间的条件
         {
               d5=number/10000; //计算number的最高位（万位）d5

               d4=number%10000/1000; //计算number的千位d4

               d3=number%1000/100; //计算number的百位d3

               d2=number%100/10;

               d1=number%10;

              if(d5!=0) //判断number是5位数的条件
              {
               System.out.println(number+"是5位数");
              
               if(d5==d1&&d4==d2) //判断number是回文数的条件
                  {
                      System.out.println(number+"是回文数");
                  }
                 
               else
                 {
                      System.out.println(number+"不是回文数");
                 }
              }
               else if(d4!=0) //判断number是4位数的条件
              {
                 System.out.println(number+"是4位数");
                
                 if(d4==d1&&d3==d2) //判断number是回文数的条件码
                 {
                   System.out.println(number+"是回文数");
                 }
                 else
                 {
                   System.out.println(number+"不是回文数");
                 }
              }
             else if(d3!=0) //判断number是3位数的条件
            {
                 System.out.println(number+"是3位数");
                
                 if(d3==d1) //判断number是回文数的条件
                 {
                   System.out.println(number+"是回文数");
                 }
                 else
                {
                   System.out.println(number+"不是回文数");
                 }
             }
             else if(d2!=0)
            {
                System.out.println(number+"是2位数");
               
                if(d1==d2)
                {
                   System.out.println(number+"是回文数");
                }
                else
                {
                 System.out.println(number+"不是回文数");
                }
            }
            else if(d1!=0)
            {
              System.out.println(number+"是1位数");
                 System.out.println(number+"是回文数");
            }
         }
      else
      {
       System.out.printf("\n%d不在1至99999之间",number);
      }
  }
}