/**

* @(#)MyDate2.java

*

*

* @author

* @version 1.00 2009/10/28

*/

import javax.swing.JOptionPane;

import java.util.Calendar;

public class MyDate2 {

private int ngay; // 1-31

private int thang; // 1-12

private int nam;

/* phuong thuc set*/

public void setngay(int ng){

this.ngay=ng;

}

public void setthang(int th){

this.thang=th;

}

public void setnam(int n){

this.nam=n;

}

/* phuong thuc get*/

public int getngay(){

return ngay;

}

public int getthang(){

return thang;

}

public int getnam(){

return nam;

}

/* phuong thuc khoi tao mac dinh*/

public MyDate2(){

Calendar cal=Calendar.getInstance();//ngay thang nam hien tai

setngay(cal.get(Calendar.DAY_OF_MONTH));

setthang(cal.get(Calendar.MONTH)+1);

setnam(cal.get(Calendar.YEAR));

}

/* phuong thuc khoi tao 3 tham so*/

public MyDate2(int d,int m,int y){

setngay(d);

setthang(m);

setnam(y);

}

/* phuong thuc khoi tao 1tham so co kieu la doi tuong */

public MyDate2(MyDate2 x){

this.ngay=x.ngay;

this.thang=x.thang;

this.nam=x.nam;

}

/* nhap*/

public void nhap(){

int ingay,ithang,inam;

do{

ithang=Integer.parseInt(JOptionPane.showInputDialog(null,"nhap thang:"));

}while(ithang<1||ithang>12);

setthang(ithang);

do{

inam=Integer.parseInt(JOptionPane.showInputDialog(null,"nhap nam:"));

}while(inam<=0);

switch(ithang){

case 1:

case 3:

case 5:

case 7:

case 8:

case 10:

case 12:do{

ingay=Integer.parseInt(JOptionPane.showInputDialog(null,"nhap ngay:"));

}while(ingay<1||ingay>31);

setngay(ingay);

break;

case 4:

case 6:

case 9:

case 11: do{

ingay=Integer.parseInt(JOptionPane.showInputDialog(null,"nhap ngay:"));

}while(ingay<1||ingay>30);

setngay(ingay);

break;

case 2:if((inam%4==0&& inam%100!=0)||(inam%400==0)){

do{

ingay=Integer.parseInt(JOptionPane.showInputDialog(null,"nhap ngay:"));

}while(ingay<1||ingay>29);

setngay(ingay);

break;

}

else{

do{

ingay=Integer.parseInt(JOptionPane.showInputDialog(null,"nhap ngay:"));

}while(ingay<1||ingay>28);

setngay(ingay);

break;

}

}

}

/* hien thi*/

public void show(){

Calendar cal=Calendar.getInstance();

cal.set(getnam(),getthang()-1,getngay());

JOptionPane.showMessageDialog(null,

((cal.get(Calendar.DAY_OF_WEEK)==1)?"Chu nhat":"Thu " +

cal.get(Calendar.DAY_OF_WEEK))+ ", ngay " + getngay() + "/"+ getthang() + "/" + getnam());

}

/* main*/

public static void main(String args[]){

/*ham khoi tao mac dinh*/

MyDate2 ex1=new MyDate2();

ex1.show();

/* ham ktao 3 tham so*/

MyDate2 ex2=new MyDate2(29,10,2009);

ex2.show();

/* ham ktao 1 tham so*/

MyDate2 ex3=new MyDate2(30,10,2009);

MyDate2 ex4=new MyDate2(ex3);

ex4.ngay=30;

ex4.thang=10;

ex4.nam=2009;

ex4.show();

MyDate2 ex5=new MyDate2();

ex5.nhap();

ex5.show();

}

}