Programas en JAVA

/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/

package proyectto1;
import java.awt.*;
import java.applet.Applet;
/**
*
* @author TESCHA
*/
public class Ej11 extends Applet{
int xinic,yinic,ancho,alto;
Color colorCuad;
Button btnAumenta,btnDisminuye;
@Override
public void init(){
btnDisminuye=new Button("disminuye ancho");
add(btnDisminuye);
btnAumenta=new Button("aumenta ancho");
add(btnAumenta);
xinic=10;
yinic=20;
ancho=100;
alto=200;
colorCuad=Color.blue;
}
public void paint(Graphics g)
{
g.setColor(colorCuad);
g.fillRect(xinic,yinic,ancho,alto);
}
public boolean action(Event evt,Object obj)
{
if(evt.target instanceof Button)
{
if(obj.toString().equals("aumenta ancho"))
{
ancho=ancho+10;
repaint();
}
if(obj.toString().equals("disminuye ancho"))
{
ancho=ancho-10;
repaint();
}
}
return true;
}
}


/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/

package proyectto1;
import java.awt.*;
import java.applet.Applet;
/**
*
* @author TESCHA
*/
public class Ej10 extends Applet{
int xinic,yinic,ancho,alto;
Button btnAumenta,btnDisminuye;
private Color colorCuad;
@Override
public void init(){
btnDisminuye=new Button("disminuye ancho");
add(btnDisminuye);
btnAumenta=new Button("aumenta ancho");
add(btnAumenta);
xinic=10;
yinic=20;
ancho=100;
alto=200;
colorCuad=Color.blue;
}
public void paint(Graphics g)
{
g.setColor(colorCuad);
g.fillRect(xinic,yinic,ancho,alto);
}
public boolean action(Event evt,Object obj)
{
if(evt.target instanceof Button)
{
if(obj.toString().equals("aumenta ancho"))
{
ancho=ancho+10;
repaint();
}
if(obj.toString().equals("disminuye ancho"))
{
ancho=ancho-10;
repaint();
}
}
return true;
}
}


/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/

package proyectto1;
import java.awt.*;
import java.applet.Applet;
/**
*
* @author TESCHA
*/
public class Ej9 extends Applet
{
int xinic,yinic,ancho,alto;
Color colorCuad;
@Override
public void init(){
xinic=10;
yinic=20;
ancho=100;
alto=200;
colorCuad=Color.blue;
}
public void paint(Graphics g)
{
g.setColor(colorCuad);
g.fillRect(xinic,yinic,ancho,alto);
}
}



/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/

package proyectto1;
import java.awt.*;
import java.applet.Applet;
/**
*
* @author TESCHA
*/
public class Ej8 extends Applet{
@Override
public void init(){

}
public void paint(Graphics g)
{
g.setColor(Color.blue);
g.drawLine(11,10,30,30);
g.drawRect(50,50,50,20);
g.setColor(Color.pink);
g.fillRect(50,150,50,20);
g.setColor(Color.CYAN);
g.drawOval(100,25,25,50);
g.setColor(Color.ORANGE);
g.drawOval(200,40,25,50);
}
public boolean action(Event evt,Object obj)
{
return true;
}
}


/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/

package proyectto1;
import java.awt.*;
import java.applet.Applet;


public class Ej7 extends Applet
{
Choice selector;
TextField txtEdo1;
TextField txtEdo2;
@Override
public void init()
{
txtEdo1=new TextField(" ");
add(txtEdo1);
selector = new Choice();
selector.addItem("Rojo");
selector.addItem("Verde");
selector.addItem("Azul");
add(selector);
}
public boolean action(Event evt,Object obj)
{
if(evt.target instanceof Choice)
{
if(selector.getSelectedIndex()==0)
txtEdo1.setText("Color rojo");
if(selector.getSelectedIndex()==1)
txtEdo1.setText("Color Verde");
if(selector.getSelectedIndex()==2)
txtEdo1.setText("Color Azul");
}
return true;
}
}


/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package proyectto1;
import java.applet.Applet;
import java.awt.*;
/**
*
* @author TESCHA
*/
public class Ej6 extends Applet{
Checkbox Relleno;
TextField txtEdo1;
TextField txtEdo2;
public void init(){
txtEdo1=new TextField(" ");
add(txtEdo1);
txtEdo2=new TextField(" ");
add(txtEdo2);
Relleno =new Checkbox("Relleno");
add(Relleno);
}
public boolean action (Event evt,Object obj){
if (evt.target instanceof Checkbox){
txtEdo1.setText("G***********");
String tmp="56+256256256:"+evt.arg.toString();
txtEdo2.setText(tmp);
}
return true;
}
}


/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/

package proyectto1;
import java.applet.Applet;
import java.awt.*;
/**
*
* @author TESCHA
*/
public class Ej5 extends Applet{
Checkbox Relleno;
public void init(){
Relleno =new Checkbox("Relleno");
add(Relleno);

}
public boolean action (Event evt,Object obj){
if (evt.target instanceof Checkbox)
System.out.println("Checkbox:"+evt.arg.toString());
return true;
}
}


/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/

package proyectto1;
import java.applet.Applet;
import java.awt.*;
/**
*
* @author TESCHA
*/
public class Ej4 extends Applet{
Color colorFondo;
String cadena1;
int xCadena1, yCadena2;
Color colorCad;
Button boton1;
String msgBoton1;
TextArea txtAreaSaludo;
String textoTxtArea;
Checkbox seleccion;
Scrollbar colores;
Choice selector;
CheckboxGroup radio;
TextField txtMensaje;
String msgTxt;
//-------------------------------------
@Override
public void init()
{
colorFondo =Color.LIGHT_GRAY;
setBackground(colorFondo);
cadena1 ="Hola a todos";
xCadena1 = 20;
yCadena2 = 30;
colorCad =Color.BLUE;
msgBoton1="Mi primer boton";
boton1 = new Button (msgBoton1);
add(boton1);
textoTxtArea="Hola otra vez";
txtAreaSaludo=new TextArea();
txtAreaSaludo.setText(textoTxtArea);
add(txtAreaSaludo);
seleccion= new Checkbox("Seleccioname");
add(seleccion);
colores=new Scrollbar();
add(colores);
selector = new Choice();
selector.addItem("Rojo");
selector.addItem("Verde");
selector.addItem("Azul");
add(selector);
radio= new CheckboxGroup();
add (new Checkbox("Primero",radio,true));
add (new Checkbox("Segundo",radio,false));
add (new Checkbox("Tercero",radio,false));
msgTxt="Hola de nueva cuenta";
txtMensaje=new TextField();
txtMensaje.setText(msgTxt);
add(txtMensaje);

}
@Override
public void paint(Graphics g)
{
setSize(500,300);
g.setColor(colorCad);
g.drawString(cadena1,xCadena1,xCadena1);
}
}


package proyectto1;
import java.applet.Applet;
import java.awt.*;
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/

/**
*
* @author TESCHA
*/
public class Ej3 extends Applet{
String cadena1;
int xCadena1, yCadena2;
Color colorCad;
Button boton1;
String msgBoton1;
@Override
public void init()
{
cadena1 ="Hola a todos";
xCadena1 = 20;
yCadena2 = 30;
colorCad =Color.BLUE;
msgBoton1="Mi primer boton";
boton1 = new Button (msgBoton1);
this.add(boton1);
}
@Override
public void paint(Graphics g)
{
g.setColor(colorCad);
g.drawString(cadena1,xCadena1,xCadena1);
}
}


/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/

package proyectto1;
import java.applet.Applet;
import java.awt.Color;
import java.awt.Graphics;
/**
*
* @author TESCHA
*/
public class Ej2 extends Applet{
String cadena1;
int xCadena1, yCadena2;
Color colorCad;
//---------------------
@Override
public void init()
{
cadena1 ="Hola a todos";
xCadena1 = 20;
yCadena2 = 30;
colorCad =Color.BLUE;
}
//------------------------
@Override
public void paint(Graphics g)
{
g.setColor(colorCad);

/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/

package proyectto1;
import java.applet.Applet;
import java.awt.Color;
import java.awt.Graphics;


/**
*
* @author TESCHA
*/
public class Ej1 extends Applet {
@Override
public void paint(Graphics g)
{
g.setColor(Color.blue);
g.drawString("Hola mundo",20,20);

}
}