求源码
參考答案:=========================== 1 ==========================
import javax.swing.*;
import java.lang.*;
public class Wanyear
{
public static void main(String[] args)
{
String input=JOptionPane.showInputDialog
("Please Enter the year");
int year=Integer.parseInt(input);
String input1=JOptionPane.showInputDialog
("Please Enter the Month");
int m=Integer.parseInt(input1);
String input2=JOptionPane.showInputDialog
("Please Enter the Day");
int d=Integer.parseInt(input2);
String Nyear=Integer.toString(year);
String Sc=Nyear.substring(0,1);
String Sy=Nyear.substring(2,3);
int c=Integer.parseInt(Sc);
int y=Integer.parseInt(Sy);
if(m<3){
year--;
m+=12;}
else
c--;
int w=(c/4)-(2*c)+y+(y/4)+(13*(m+1)/5)+d-1;
int result=0;
if(w>=0)
result=w%7;
else
result=(w+700)%7;
switch(result)
{
case 0: System.out.println("SUN"); break;
case 1: System.out.println("MON"); break;
case 2: System.out.println("TUE"); break;
case 3: System.out.println("WED"); break;
case 4: System.out.println("THU"); break;
case 5: System.out.println("FRI"); break;
case 6: System.out.println("SAT"); break;
}
}
}
======================== 2 =====================
import java.io.*;
class putout{
public void putout(int f,int x,int y){
int i;
int a[]= new int[40];
System.out.println(" 日 一 二 三 四 五 六 "+" "+f+"月");
for (i=0;i<x;i++)
{System.out.print(" "); }
for(i=x;i<x+y;i++)
a[i]=i-x+1;
for(i=x;i<x+y;i++)
{
if (i%7==0)
System.out.print("\n");
if (a[i]<10)
System.out.print(" "+a[i]);
else
System.out.print(" "+a[i]);
}
System.out.println("\n");
}
}
class st{
public static void main(String args[])throws IOException{
putout p=new putout();
int year,mouth,y=1,t,i;
InputStreamReader ir;
BufferedReader in;
ir=new InputStreamReader(System.in);
in=new BufferedReader(ir);
System.out.println("请输入一个年份");
String s=in.readLine();
year=Integer.parseInt(s);
if((year%4==0 && year%100!=0)||(year%400==0))
mouth=1;
else
mouth=0;
y=year;
for(i=1;i<year;i++)
{if((i%4==0 && i%100!=0)||(i%400==0))
y++;}
y=y%7;
for(i=1;i<13;i++){
switch(i){
case 1: {p.putout(1,y,31);y=(y+31)%7;break;}
case 2: {p.putout(2,y,28+mouth);y=(y+28+mouth)%7;break;}
case 3: {p.putout(3,y,31);y=(y+31)%7;break;}
case 4: {p.putout(4,y,30);y=(y+30)%7;break;}
case 5: {p.putout(5,y,31);y=(y+31)%7;break;}
case 6: {p.putout(6,y,30);y=(y+30)%7;break;}
case 7: {p.putout(7,y,31);y=(y+31)%7;break;}
case 8: {p.putout(8,y,31);y=(y+31)%7;break;}
case 9: {p.putout(9,y,30);y=(y+30)%7;break;}
case 10: {p.putout(10,y,31);y=(y+31)%7;break;}
case 11: {p.putout(11,y,30);y=(y+30)%7;break;}
case 12: {p.putout(12,y,31);y=(y+31)%7;break;}
}
}
}
}
给了你2个，不知道你要的是显示的还是求那一天的
不过现在能解决你的问题