CALCULADORA EN JAVA 2013
import java.awt.Color;
import java.awt.color.*;
import javax.swing.*;
import java.awt.event.*;
public class Formulario1 extends JFrame implements ActionListener{
private JTextField textfield1,textfield2,textfield3;
private JButton boton1,boton2,boton3,boton4,boton5;
public Formulario1() {
// CALCULADORA HECHA POR LUIS ANGEL RESTREPO//
setLayout(null);
textfield1=new JTextField();
textfield1.setBounds(50,10,100,30);
add(textfield1);
textfield2=new JTextField();
textfield2.setBounds(50,50,100,30);
add(textfield2);
textfield3=new JTextField();
textfield3.setBounds(50,100,100,30);
add(textfield3);
boton1=new JButton("SUMAR");
boton1.setBounds(30,150,80,80);
boton1.setForeground(Color.BLACK);
boton1.setBackground(Color.RED);
add(boton1);
boton1.addActionListener(this);
boton2=new JButton("RESTAR");
boton2.setBounds(120,150,80,80);
add(boton2);
boton2.addActionListener(this);
boton2.setForeground(Color.BLACK);
boton2.setBackground(Color.YELLOW);
boton3=new JButton("MULTIPLICAR");
boton3.setBounds(30,235,80,80);
add(boton3);
boton3.addActionListener(this);
boton3.setForeground(Color.BLACK);
boton3.setBackground(Color.YELLOW);
boton4=new JButton("DIVIDIR");
boton4.setBounds(120,235,80,80);
add(boton4);
boton4.addActionListener(this);
boton4.setForeground(Color.BLACK);
boton4.setBackground(Color.RED);
boton5=new JButton("BORRAR");
boton5.setBounds(30,360,180,80);
add(boton5);
boton5.addActionListener(this);
boton5.setForeground(Color.RED);
boton5.setBackground(Color.BLACK);
}
public void actionPerformed(ActionEvent e) {
if (e.getSource()==boton1 ) {
String cad1=textfield1.getText();
String cad2=textfield2.getText();
int x1=Integer.parseInt(cad1);
int x2=Integer.parseInt(cad2);
int suma=x1+x2;
String total=String.valueOf(suma);
textfield3.setText(total);
}
if (e.getSource()==boton3 ) {
String cad3=textfield1.getText();
String cad4=textfield2.getText();
int x3=Integer.parseInt(cad3);
int x4=Integer.parseInt(cad4);
int multiplicar=x3*x4;
String resul=String.valueOf(multiplicar);
textfield3.setText(resul);
}
if (e.getSource()==boton4 ) {
String cad3=textfield1.getText();
String cad4=textfield2.getText();
int x3=Integer.parseInt(cad3);
int x4=Integer.parseInt(cad4);
int dividir=x3/x4;
String resul=String.valueOf(dividir);
textfield3.setText(resul);
}
if (e.getSource()==boton2 ) {
String cad3=textfield1.getText();
String cad4=textfield2.getText();
int x3=Integer.parseInt(cad3);
int x4=Integer.parseInt(cad4);
int restar=x3-x4;
String resul=String.valueOf(restar);
textfield3.setText(resul);
}else if( e.getSource()==boton5){
textfield1.setText(null);
textfield2.setText(null);
textfield3.setText(null);
}
}
public static void main(String[] ar) {
Formulario1 formulario=new Formulario1();
formulario.setBounds(200,50,400,500);
formulario.setVisible(true);
}
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