java if,if...else...的应用

import java.util.Scanner;
public class Dome1{
    public static void main (String []args ){
        Scanner input = new Scanner (System.in );
        int day =0;
        System.out.print("请输入1~7整数:");
        day = input.nextInt();
        if(day==1){
            System.out.print("星期一");
        }
        else if(day==2){
            System.out.print("星期二");
        }
        else if(day==3){
            System.out.print("星期三");
        }
        else if(day==4){
            System.out.print("星期四");
        }else if(day==5){
            System.out.print("星期五");
        }else if(day==6){
            System.out.print("星期六");
        }else if(day==7){
            System.out.print("星期日");
        }
        else{
            System.out.print("输入整数错误!");
        }
        
        
        
        
    }
}