calendercreator.java

java日历程序。初学者可学习学习哦。

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

public class CalenderCreator extends Frame 
{ 
Button days[]=new Button[49]; 
Choice Month=new Choice(); 
Choice Year=new Choice(); 
Label lmonth=new Label("MONTH"); 
Label lyear=new Label("Year"); 
Label ltext=new Label("YEAR UPTO:::"); 
Panel p1,p2; 
GregorianCalendar gc=new GregorianCalendar(); 
int totdays; 
TextField textfield=new TextField(2); 


public CalenderCreator() 
{ 
setTitle("This is a calender"); 
setSize(400,400); 
setResizable(false); 
setLocation(50,50); 
p1=new Panel(new FlowLayout()); 
p2=new Panel(new GridLayout(7,7,10,10)); 
p1.setBackground(Color.red); 
p2.setBackground(Color.cyan); 
add(p1,BorderLayout.NORTH); 
add(p2); 

p1.add(ltext); 
p1.add(textfield); 
p1.add(lmonth); 
p1.add(Month); 
Month.add("JAN"); 
Month.add("FEB"); 
Month.add("MAR"); 
Month.add("APR"); 
Month.add("MAY"); 
Month.add("JUN"); 
Month.add("JUL"); 
Month.add("AUG"); 
Month.add("SEP"); 
Month.add("OCT"); 
Month.add("NOV"); 
Month.add("DEC"); 
Month.addItemListener(new myLis(this)); 
// int i1=myAction.newyear; // 
// System.out.println("iiiiiiiiii is :::::::"+i1); // 
textfield.addActionListener(new myAction(this)); // 


p1.add(lyear); 
p1.add(Year); 
Year.add("1990"); 
/* Year.add("1991"); 
Year.add("1992"); 
Year.add("1993"); 
Year.add("1994"); 
Year.add("1995"); */ 
Year.addItemListener(new myLis(this)); 

for(int i=0;i<49;i++) 
{ 
days[i]=new Button(""); 
} 

for(int c=0;c<49;c++) 
{ 
p2.add(days[c]); 
} 
setVisible(true); 
} 
void setYear(String mynewyear) 
{ 
int h=Integer.parseInt(mynewyear); 
for(int adder=1991;adder<=h;adder++) 
{ 
Year.add(""+adder); 
} 
} 
void setButtons(int myday,int mytotdays) 
{ 
int count=7; 

days[0].setLabel("SUN"); 
days[1].setLabel("MON"); 
days[2].setLabel("TUE"); 
days[3].setLabel("WED"); 
days[4].setLabel("THUR"); 
days[5].setLabel("FRI"); 
days[6].setLabel("SAT"); 

if ( myday>0) 
{ 
int blank= myday; 
for( ;blank>0;blank--,count++) 
{ 
days[count].setLabel(""); 
} 
} 
for(int i=1;i<=mytotdays; i++,count++) 
{ 
days[count].setLabel(""+i); 
} 
for(int j = 1;count < 49; j++,count++) 
{ 
days[count].setLabel(""); 
} 
} 

void setVal(Date date,int iday,int iselMonth,int iselYear) 
{ 
gc.setTime(date); 
if(iselMonth==0 || iselMonth==2 || iselMonth==4 || iselMonth==6 || iselMonth== 7 ||iselMonth==9 || iselMonth==11) 
{ 
totdays=31; 
setButtons(iday,totdays); 
} 

if(iselMonth==3 || iselMonth==5 || iselMonth==8 || iselMonth==10) 
{ 
totdays=30; 
setButtons(iday,totdays); 
} 

if(gc.isLeapYear(iselYear) && iselMonth==1) 
{ 
totdays=29; 
setButtons(iday,totdays); 
} 
if( !gc.isLeapYear(iselYear) && iselMonth==1) 
{ 
totdays=28; 
setButtons(iday,totdays); 
} 

} 

static public void main(String args[]) 
{ 
CalenderCreator c=new CalenderCreator(); 
} 
} 
class myLis implements ItemListener 
{ 
CalenderCreator calLis; 
public myLis(CalenderCreator c) 
{ 
calLis=c; 
} 
public void itemStateChanged(ItemEvent i) 
{ 
int selMonth=calLis.Month.getSelectedIndex(); 
int selYear1=Integer.parseInt(calLis.Year.getSelectedItem()); 
int selYear = selYear1- 1900; 
Date d1 = new Date(selYear,selMonth,1); 
int day = d1.getDay(); 
calLis.setVal(d1,day,selMonth,selYear); 
} 
} 
class myAction implements ActionListener 
{ 
CalenderCreator calAc; 
int newyear; 

public myAction(CalenderCreator ca) 
{ 
calAc=ca; 
} 
public void actionPerformed(ActionEvent e) 
{ 
String s=calAc.textfield.getText(); 
// newyear=Integer.parseInt(s); 
System.out.println("Year upto::::::::"+s); 
calAc.setYear(s); 
TextField tf = (TextField)e.getSource(); 
tf.removeActionListener(this); 
} 
}