java 简单的练习题 帮忙写代码 只要代码就可以啦 谢谢！急急！！！！！！

import java.util.Scanner;

public class WeekJudge{

/**
* @param args
*/
public static void main(String[] args) {
System.out.print("请输入一个数，范围1-7：");
while (true) {
Scanner scanner = new Scanner(System.in);
try {
int x = scanner.nextInt();
if (x < 1 || x > 7) {
System.out.println("输入数据超出范围，请重新输入");
continue;
}
switch (x) {
case 1: {
System.out.println("星期一");
break;
}
case 2: {
System.out.println("星期二");
break;
}
case 3: {
System.out.println("星期三");
break;
}
case 4: {
System.out.println("星期四");
break;
}
case 5: {
System.out.println("星期五");
break;
}
case 6: {
System.out.println("星期六");
break;
}
default: {
System.out.println("星期日");
break;
}
}
break;
} catch (Exception e) {
System.out.println("输入数据不是数字，请重新输入");
}
}
}
}

package com;
import java.util.Scanner;
public class WeekSwitch {
public static void main(String[] args) {
System.out.println("请输入一个整数：(范围：1-7) : ");
Scanner scanner = new Scanner(System.in);
int input = scanner.nextInt();
switch (input) {
case 1:
System.out.println("星期一");
break;
case 2:
System.out.println("星期二");
break;
case 3:
System.out.println("星期三");
break;
case 4:
System.out.println("星期四");
break;
case 5:
System.out.println("星期五");
break;
case 6:
System.out.println("星期六");
break;
case 7:
System.out.println("星期天");
break;
default:
System.out.println("输入数据超出范围，请重新输入");
break;
}
}
}

哎，真心不想写，

public class ContainsBug{
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int day =0;
        while (!"".equals(day = in.nextInt())){
            String dayStr ="星期";
            switch (day){
                case 1:
                    dayStr +="一";
                    break;
                case 2:
                    dayStr +="二";
                    break;
                case 3:
                    dayStr +="三";
                    break;
                case 4:
                    dayStr +="四";
                    break;
                case 5:
                    dayStr +="五";
                    break;
                case 6:
                    dayStr +="六";
                    break;
                case 7:
                    dayStr +="日";
                    break;
                default:
                    dayStr = "输入数据超出范围，请重新输入";
                    break;

            }
            System.out.println(dayStr);
        }

    }
}

你这是需要画面和判读的程式码???