An 100 Year Calender(with better GUI)

				
//**************************************
// Name: An 100 Year Calender(with better GUI)
// Description:One can get an overview of Selected Month & Year.
 with leap year details.
// By: PankajS.Ganorkar
//
// Inputs:There is no input required to run the Application.
//
// Returns:After running the application you just select the monyh & year.
//
// Assumes:No Nothing.(I mean you must be A Java Programmer)
//
// Side Effects:As i wish , There are No Side effects of Application.
//
//This code is copyrighted and has// limited warranties.Please see http://www.Planet-Source-Code.com/vb/scripts/ShowCode.asp?txtCodeId=5899&lngWId=2//for details.//**************************************

// TO DISPLAY CALENDER OF SPECIFIED MONTH & YEAR.
// Developed By :- Pankaj Ganorkar.
// Supported By :- Deepak Ganorkar.
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Calender extends JFrame implements ActionListener , ItemListener
 {
 JButton jb[] = new JButton[42];
 static JComboBox monthChoice = new JComboBox();
 static JComboBox yearChoice = new JComboBox();
 JLabel days[] = new JLabel[7];
 JLabel l[] = new JLabel[5];
 int year,month,flag,rem,h;
 char ch;
 char Years[] = {'A','B','C','K','F','G','A','I','D','E','F','N','B',
'C','D','L','G','A','B','J','E','F','G','H','C',
'D','E','M','A','B','C','K','F','G','A','I','D','E',
'F','N','B','C','D','L','G','A','B','J','E','F',
'G','H','C','D','E','M','A','B','C','K','F','G','A',
'I','D','E','F','N','B','C','D','L','G','A','B',
'J','E','F','G','H','C','D','E','M','A','B','C','K',
'F','G','A','I','D','E','F','N','B','C','D','E'};
 
 int Months[][]={{1,4,4,7,2,5,7,3,6,1,4,6},
 {2,5,5,1,3,6,1,4,7,2,5,7},
 {3,6,6,2,4,7,2,5,1,3,6,1},
 {4,7,7,3,5,1,3,6,2,4,7,2},
 {5,1,1,4,6,2,4,7,3,5,1,3},
 {6,2,2,5,7,3,5,1,4,6,2,4},
 {7,3,3,6,1,4,6,2,5,7,3,5},
 {1,4,5,1,3,6,1,4,7,2,5,7},
 {2,5,6,2,4,7,2,5,1,3,6,1},
 {3,6,7,3,5,1,3,6,2,4,7,2},
 {4,7,1,4,6,2,4,7,3,5,1,3},
 {5,1,2,5,7,3,5,1,4,6,2,4},
 {6,2,3,6,1,4,6,2,5,7,3,5},
 {7,3,4,7,2,5,7,3,6,1,4,6}};
static
 {
 monthChoice.addItem("JAN");
 monthChoice.addItem("FEB");
 monthChoice.addItem("MAR");
 monthChoice.addItem("APR");
 monthChoice.addItem("MAY");
 monthChoice.addItem("JUN");
 monthChoice.addItem("JUL");
 monthChoice.addItem("AUG");
 monthChoice.addItem("SEP");
 monthChoice.addItem("OCT");
 monthChoice.addItem("NOV");
 monthChoice.addItem("DEC");
 }
public Calender()
{
 setVisible(true);
 setLayout(null);
 setSize(500,400);
// center screen
setLocation((Toolkit.getDefaultToolkit().getScreenSize().width
						- getWidth())/2,
				(Toolkit.getDefaultToolkit().getScreenSize().height
					- getHeight())/2);
// setBounds(150,150,500,400);
 setForeground(Color.red);
 setTitle("Calender Box");
 Font F = new Font("Dialog",Font.BOLD,16);
 setFont(F);
for(int i=0;i<42;i++)
 {
	jb[i] = new JButton();	add(jb[i]);
jb[i].addActionListener(this);
 }
 for(int i=0;i<5;i++)
 {
	l[i] = new JLabel();
	l[i].setFont(F); add(l[i]);
 }
 l[0].setText("Month");
 l[1].setText("Year");
 l[0].setBounds(25,90,150,30);
 l[1].setBounds(25,170,150,30);
 l[2].setBounds(150,330,250,30);
 l[3].setText("Calender");
 l[3].setBounds(175,10,150,30);
 l[3].setFont(new Font("Georgia",Font.BOLD,26));
 l[3].setForeground(Color.RED);
 add(monthChoice);
 add(yearChoice);
 monthChoice.setBounds(25,120,75,30);
 yearChoice.setBounds(25,200,75,30);
 monthChoice.addItemListener(this);
 yearChoice.addItemListener(this);
 for(int i=1;i<=100;i++)
 {
yearChoice.addItem(2000+i);
 }
 for(int i=0;i<7;i++)
 {
int x1=130;
	days[i] = new JLabel();
	days[i].setFont(F); add(days[i]);
days[i].setBounds(x1+(i*50),50,50,30);
 }
 days[0].setText("MON");
 days[1].setText("TUE");
 days[2].setText("WED");
 days[3].setText("THU");
 days[4].setText("FRI");
 days[5].setText("SAT");
 days[6].setText("SUN");
 int k=0;
 for(int i=0;i<6;i++)
 {
int y=80;
for(int j=0;j<7;j++)
{int x=130;
jb[k].setBounds((x+(j*50)),y+(i*40),50,40);
k++;
}
 } 
}
//==============================================================================
public void Monday(int X)
{
int day=1;
for(int i=0;i<31;i++)
 {
jb[i].setText(""+day);
day++;
if(day==(X+1))
break;
 }
}
public void Tuesday(int X)
{
int day=1;
for(int i=1;i<32;i++)
 {
	jb[i].setText(""+day);
day++;
if(day==(X+1))
break;
 }
}
public void Wednesday(int X)
{
int day=1;
for(int i=2;i<33;i++)
 {
	jb[i].setText(""+day);
day++;
if(day==(X+1))
break;
 }
}
public void Thursday(int X)
{
int day=1;
for(int i=3;i<34;i++)
 {
jb[i].setText(""+day);
day++;
if(day==(X+1))
break;
}
}
public void Friday(int X)
{
int day=1;
for(int i=4;i<35;i++)
 {
jb[i].setText(""+day);
day++;
if(day==(X+1))
break;
 }
}
public void Saturday(int X)
{
int day=1;
for(int i=5;i<36;i++)
 {
jb[i].setText(""+day);
day++;
if(day==(X+1))
break;
 }
}
public void Sunday(int X)
{
int day=1;
for(int i=6;i<37;i++)
 {
jb[i].setText(""+day);
day++;
if(day==(X+1))
break;
 }
}
//==============================================================================
public void drawCalender()
 {
 year=(yearChoice.getSelectedIndex());
 System.out.println(yearChoice.getSelectedItem());
 System.out.println(yearChoice.getSelectedIndex());
 System.out.println(monthChoice.getSelectedItem());
 System.out.println(monthChoice.getSelectedIndex());
 month=(monthChoice.getSelectedIndex());
 ch=Years[year];
 int L=0;
 for(char i='A';i!=ch;i++)
 { L++; 
 } 
System.out.println(""+ch+L);
 
	if(month==0||month==2||month==4||month==6||month==7||month==9||month==11)
	{
 flag=4;
System.out.println(flag);
	}
	else
 { if(month==1)
 {
rem=(year+1)%4;
if(rem==0)
{
flag=2;
System.out.println(flag);
l[2].setText("THIS IS A LEAP YEAR");
 }
 else
 {
flag=1;
System.out.println(flag);
 }
 }
else
{
flag=3;
System.out.println(flag);
 }
 }
//==============================================================================
 
 int Day= Months[L][month];
 switch(Day)
 {
 case 1:
 {
switch(flag)
{
case 1:
{
Monday(28);break;
}
case 2:
{
Monday(29);break;
}
case 3:
{
Monday(30);break;
}
case 4:
{
Monday(31);break;
}
default :
{
 break;
}
}
break;
 }
 case 2:
 {
 switch(flag)
{
case 1:
{
Tuesday(28); break;
}
case 2:
{
Tuesday(29); break;
}
case 3:
{
Tuesday(30); break;
}
case 4:
{
Tuesday(31); break;
}
default :
{
break;
}
}
 break;
}
case 3:
{
 switch(flag)
{
case 1:
{
Wednesday(28); break;
}
case 2:
{
Wednesday(29); break;
}
case 3:
{
Wednesday(30); break;
}
case 4:
{
Wednesday(31); break;
}
default:
{
break;
}
}
 break;
}
case 4:
{
switch(flag)
 {
case 1:
{
Thursday(28); break;
}
case 2:
{
Thursday(29); break;
}
case 3:
{
Thursday(30); break;
}
case 4:
{
Thursday(31); break;
}
default:
{
break;
}
 }
break;
}
case 5:
{
switch(flag)
	 {
case 1:
{
Friday(28); break;
}
case 2:
{
Friday(29); break;
}
case 3:
{
System.out.println("sunday31");
Friday(30); break;
}
case 4:
{
Friday(31); break;
}
default:
{
break;
}
 }
break;
}
case 6:
{
 switch(flag)
	{
case 1:
{
Saturday(28); break;
}
case 2:
{
Saturday(29); break;
}
case 3:
{
Saturday(30); break;
}
case 4:
{
Saturday(31); break;
}
default:
{
break;
}
}
 break;
}
case 7:
{
switch(flag)
	 {
case 1:
{
Sunday(28); break;
}
case 2:
{
Sunday(29); break;
}
case 3:
{
Sunday(30); break;
}
case 4:
{
Sunday(31); break;
}
default:
{
break;
}
 }
break;
}
default :
{
 break;
}
 }
}
//==============================================================================
 
 public void actionPerformed(ActionEvent e)
{
//String arg = e.getActionCommand();
//if(arg.equals("OK"))
//{ setVisible(false);}
}
 public void itemStateChanged(ItemEvent ie)
{
 for(int i=0;i<42;i++)
{jb[i].setText("");}
l[2].setText("");
drawCalender();
}
 public static void main(String[] args)
 {
new Calender();
 }
}