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Lenguaje
Java
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Descripción
Calendario
Para cambiar de mes presione las teclas ← (flecha izquierda) y → (flecha derecha).
Para cambiar de año presione las teclas ↑ (flecha arriba) y ↓ (flecha abajo).
Para terminar el programa presione la tecla ESC.
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import java.awt.Dialog;
import java.awt.KeyEventDispatcher;
import java.awt.KeyboardFocusManager;
import java.awt.event.KeyEvent;
import java.util.Calendar;
public class Calendario extends Dialog implements KeyEventDispatcher {
private static final long serialVersionUID = 1L;
private static final String borde = "\315\315\315\315\315\315\315\315\315";
private static final int[] year_regular = { 0, 3, 3, 6, 1, 4, 6, 2, 5, 0, 3, 5 };
private static final int[] year_bisiesto = { 0, 3, 4, 0, 2, 5, 0, 3, 6, 1, 4, 6 };
private static final String[] nombres = {
" Enero ", " Febrero ", " Marzo ", " Abril ",
" Mayo ", " Junio ", " Julio ", " Agosto ",
"Septiembre", " Octubre ", "Noviembre ", "Diciembre "};
private static int[] meses = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
private int year, mes;
public Calendario() {
super((Dialog)null);
this.setUndecorated(false);
KeyboardFocusManager.getCurrentKeyboardFocusManager().addKeyEventDispatcher(this);
Calendar hoy = Calendar.getInstance();
year = hoy.get(Calendar.YEAR);
mes = hoy.get(Calendar.MONTH);
print();
}
private void print() {
meses[1] = (year % 4 == 0 && year % 100 != 0) || year % 400 == 0 ? 29 : 28;
int dia = 1 - ((year - 1) % 7 + ((year - 1) / 4 - (3 * ((year - 1) / 100 + 1)) / 4) % 7 +
(meses[1]==28 ? year_regular[mes] : year_bisiesto[mes]) + 1) % 7;
System.out.println("\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n");
System.out.println(" \21" + nombres[mes] + "\20 \36" + year + "\37");
System.out.println("\311"+ borde + "\313"+ borde + "\313"+ borde + "\313"+ borde + "\313"+ borde + "\313"+ borde + "\313"+ borde + "\273");
System.out.println("\272 Domingo \272 Lunes \272 Martes \272Miercoles\272 Jueves \272 Viernes \272 S\240bado \272");
System.out.println("\314"+ borde + "\316"+ borde + "\316"+ borde + "\316"+ borde + "\316"+ borde + "\316"+ borde + "\316"+ borde + "\271");
while (dia<=meses[mes])
{
for (int i=0; i<7; i++, dia++)
if (dia<1 || dia>meses[mes])
System.out.print("\272 ");
else
System.out.printf("\272 %2d ", dia);
System.out.println("\272");
if (dia<=meses[mes])
System.out.println("\314"+ borde + "\316"+ borde + "\316"+ borde + "\316"+ borde + "\316"+ borde + "\316"+ borde + "\316"+ borde + "\271");
else
System.out.println("\310"+ borde + "\312"+ borde + "\312"+ borde + "\312"+ borde + "\312"+ borde + "\312"+ borde + "\312"+ borde + "\274");
}
System.out.println("Presione \033 y \032 para cambiar de mes.");
System.out.println("Presione \030 y \031 para cambiar de a\244o.");
System.out.println("Presione ESC para salir.");
}
@Override
public boolean dispatchKeyEvent(KeyEvent e) {
if(e.getID()==KeyEvent.KEY_PRESSED)
switch(e.getKeyCode()) {
case KeyEvent.VK_ESCAPE:
System.exit(0);
break;
case KeyEvent.VK_UP:
year++;
print();
break;
case KeyEvent.VK_DOWN:
year--;
print();
break;
case KeyEvent.VK_RIGHT:
if (mes<11)
mes++;
else
{
year++;
mes = 0;
}
print();
break;
case KeyEvent.VK_LEFT:
if (mes!=0)
mes--;
else
{
year--;
mes = 11;
}
print();
break;
}
return false;
}
public static void main(String[] args) {
new Calendario().setVisible(true);
}
}
import java.awt.KeyEventDispatcher;
import java.awt.KeyboardFocusManager;
import java.awt.event.KeyEvent;
import java.util.Calendar;
public class Calendario extends Dialog implements KeyEventDispatcher {
private static final long serialVersionUID = 1L;
private static final String borde = "\315\315\315\315\315\315\315\315\315";
private static final int[] year_regular = { 0, 3, 3, 6, 1, 4, 6, 2, 5, 0, 3, 5 };
private static final int[] year_bisiesto = { 0, 3, 4, 0, 2, 5, 0, 3, 6, 1, 4, 6 };
private static final String[] nombres = {
" Enero ", " Febrero ", " Marzo ", " Abril ",
" Mayo ", " Junio ", " Julio ", " Agosto ",
"Septiembre", " Octubre ", "Noviembre ", "Diciembre "};
private static int[] meses = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
private int year, mes;
public Calendario() {
super((Dialog)null);
this.setUndecorated(false);
KeyboardFocusManager.getCurrentKeyboardFocusManager().addKeyEventDispatcher(this);
Calendar hoy = Calendar.getInstance();
year = hoy.get(Calendar.YEAR);
mes = hoy.get(Calendar.MONTH);
print();
}
private void print() {
meses[1] = (year % 4 == 0 && year % 100 != 0) || year % 400 == 0 ? 29 : 28;
int dia = 1 - ((year - 1) % 7 + ((year - 1) / 4 - (3 * ((year - 1) / 100 + 1)) / 4) % 7 +
(meses[1]==28 ? year_regular[mes] : year_bisiesto[mes]) + 1) % 7;
System.out.println("\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n");
System.out.println(" \21" + nombres[mes] + "\20 \36" + year + "\37");
System.out.println("\311"+ borde + "\313"+ borde + "\313"+ borde + "\313"+ borde + "\313"+ borde + "\313"+ borde + "\313"+ borde + "\273");
System.out.println("\272 Domingo \272 Lunes \272 Martes \272Miercoles\272 Jueves \272 Viernes \272 S\240bado \272");
System.out.println("\314"+ borde + "\316"+ borde + "\316"+ borde + "\316"+ borde + "\316"+ borde + "\316"+ borde + "\316"+ borde + "\271");
while (dia<=meses[mes])
{
for (int i=0; i<7; i++, dia++)
if (dia<1 || dia>meses[mes])
System.out.print("\272 ");
else
System.out.printf("\272 %2d ", dia);
System.out.println("\272");
if (dia<=meses[mes])
System.out.println("\314"+ borde + "\316"+ borde + "\316"+ borde + "\316"+ borde + "\316"+ borde + "\316"+ borde + "\316"+ borde + "\271");
else
System.out.println("\310"+ borde + "\312"+ borde + "\312"+ borde + "\312"+ borde + "\312"+ borde + "\312"+ borde + "\312"+ borde + "\274");
}
System.out.println("Presione \033 y \032 para cambiar de mes.");
System.out.println("Presione \030 y \031 para cambiar de a\244o.");
System.out.println("Presione ESC para salir.");
}
@Override
public boolean dispatchKeyEvent(KeyEvent e) {
if(e.getID()==KeyEvent.KEY_PRESSED)
switch(e.getKeyCode()) {
case KeyEvent.VK_ESCAPE:
System.exit(0);
break;
case KeyEvent.VK_UP:
year++;
print();
break;
case KeyEvent.VK_DOWN:
year--;
print();
break;
case KeyEvent.VK_RIGHT:
if (mes<11)
mes++;
else
{
year++;
mes = 0;
}
print();
break;
case KeyEvent.VK_LEFT:
if (mes!=0)
mes--;
else
{
year--;
mes = 11;
}
print();
break;
}
return false;
}
public static void main(String[] args) {
new Calendario().setVisible(true);
}
}