java基础语法练习--输入年月日确定星期几

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基础语法练习不能少
package test;import java.util.Scanner;public class aa{      public static void main (String[]args){          System.out.println("今年是哪年？");       Scanner reader = new Scanner(System.in);        int x = reader.nextInt();        int a=0,b=0,c=0,d=0,i=1;        c=x-1;        a=365*c ;        for(i=1;i<=c;i++)           {        //计算出x-1年的天数，考虑闰年            if ((i%4==0&i%100!=0)||i%400==0){                                             b=b+1;                                            }             a=a+b;           }            //System.out.println(a);         System.out.println("今天是几月？");        Scanner book = new Scanner (System.in);        int q = book.nextInt();        int t=q-1;        switch(t)      {       case 0:d=0;break;       case 1:d=31;break;       case 2:d=31+28;break;       case 3: d=31+28+31;break;       case 4:d=31+28+31+30;break;       case 5: d=31+28+31+30+31;break;       case 6: d=31+28+31+30+31+30;break;       case 7: d=31+28+31+30+31+30+31;break;       case 8: d=31+28+31+30+31+30+31+31;break;       case 9: d=31+28+31+30+31+30+31+31+30;break;       case 10: d=31+28+31+30+31+30+31+31+30+31;break;       case 11: d=31+28+31+30+31+30+31+31+30+31+30;break;               }        a=a+d;        //System.out.println(a);       System.out.println("今天是几号？");       Scanner look = new Scanner(System.in);         int w = reader.nextInt();        a=a+w;        //计算今年天数，考虑闰年情况       if (((x%4==0&x%100!=0)||x%400==0)&q==2)          a=a+1;         //System.out.println(a);       int h;       //判断星期几       h=a%7;       if(h==0)       {       System.out.println("输入的日期是星期天");       }       else{       System.out.println ("输入的日期是星期"+h);       }          }}
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