Choose your Calendar - Source File

import java.awt.*;
import java.awt.event.*;
import java.util.*;
import java.text.*;
import java.applet.*;

public class Calendar_applet extends Applet implements ActionListener
{
Monthly ins = null;
TextField text = null;

public void init()
{

ins = new Monthly(getSize());
text = new TextField(20);
Label bb2 = new Label("Enter the month/year (MM/YYYY)");
Panel shortPanel = new Panel();

text.addActionListener(this);
shortPanel.setLayout(new FlowLayout());
shortPanel.add(text);
shortPanel.add(bb2);

setLayout(new BorderLayout());

add(ins,BorderLayout.CENTER);
add(shortPanel,BorderLayout.SOUTH);
}

public void actionPerformed(ActionEvent event){

ins.setEntry("01/"+text.getText().trim() ) ;
text.setText("");
ins.repaint();
repaint();
}

public String getAppletInfo(){

StringBuffer s = new StringBuffer();
s.append("Choose your Calendar\n");
s.append((char) 169);
s.append("by Neri Llosa (nerill@aol.com), All Rights Reserved\n");
return s.toString();
}
}



class Monthly extends Panel
{
private final String[] days = {"Sun","Mon","Tue","Wed","Thu","Fri","Sat"} ;
private final String[] months = {"January","February","March",
"April","May","June","July","August","September","October",
"November","December"} ;

private int x=0;
private int y=0;
private GregorianCalendar calendar = null;
private String entry = null;
private Date dina=null;

public Monthly(Dimension d){
setSize(new Dimension(d.width,d.height-60));
}

public void setEntry(String entry){
this.entry=entry;
}

public Point nextPoint(int x, int y){
int j = getSize().width/8;
int z = y ;
int w = x + j;
if (w >(7*j)) {w=j/2; z+=35;}
return new Point(w,z);
}

public void paint(Graphics g){

int y = getSize().width/8;

try{

if (dina==null){
dina = new Date();
calendar = new GregorianCalendar();
calendar.setTime(dina);
int mmm = calendar.get(Calendar.MONTH) ;
int yyy = calendar.get(Calendar.YEAR) ;
entry = "01/"+(mmm+1)+"/"+yyy;
}

dina = DateFormat.getDateInstance
(DateFormat.SHORT,Locale.FRANCE).parse(entry);
calendar = new GregorianCalendar();
calendar.setTime(dina);
}
catch(ParseException e){System.out.println(e);};

int mm = calendar.get(Calendar.MONTH) ;
int yy = calendar.get(Calendar.YEAR) ;
int pp = calendar.get(Calendar.DAY_OF_WEEK) ;
System.out.println("MONTH "+mm);
System.out.println("YEAR "+yy);
System.out.println("WEEK DAY "+pp);


String title = "Calendar for "+months[mm]+" "+yy;
Font font = new Font("Serif",Font.ITALIC,22);
g.setFont(font);
g.setColor(Color.blue);
FontMetrics metrics = getFontMetrics(font);

g.drawString(title,(getSize().width-
metrics.stringWidth(title))/2,25);

g.setFont(new Font("Serif",Font.BOLD,18));
g.setColor(Color.green);
for(int i=0,z=y/2; i<7;i++,z+=y){
g.drawString(days[i],z,65);
}

int num;
switch(mm){
case 0: case 2: case 4: case 6: case 7: case 9: case 11:
num=31;
break;
case 1:
if((calendar.isLeapYear(yy))&&(yy%1000!=0))
num=29;
else
num=28;
break;
default:
num=30;
}

Point[] points = new Point[num];
g.setFont(new Font("Roman",Font.BOLD,20));
g.setColor(Color.black);
points[0]=new Point(y/2+((pp-1)*y),100);
g.drawString("1",points[0].x,points[0].y);


for(int i=0; i<points.length-1;i++){
points[i+1] = nextPoint(points[i].x,points[i].y);
g.drawString(""+(i+2),points[i+1].x,points[i+1].y);
}
}
}

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