Programmation Java/Swing/Somme
Interfaces graphiques avec swing
[modifier | modifier le wikicode]Calculer la somme de 2 entiers
[modifier | modifier le wikicode]Le fichier Somme.java
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.border.*;
public class Somme extends JFrame implements ActionListener
{
private JLabel textX,textY,textS;
private JTextField editX,editY,editS;
private JButton buCompute;
private double x,y,s;
public static void main(String [] args)
{
Somme a=new Somme();
}
Somme()
{
x=0;
y=0;
setBounds(10,20,400,200);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
Container c;
c=getContentPane();
BorderLayout bl=new BorderLayout();
c.setLayout(bl);
JPanel p=new JPanel();
p.setLayout(null);
textX= new JLabel("Valeur de X : ");
textX.setBounds(10,20,100,20);
p.add(textX);
textY= new JLabel("Valeur de Y : ");
textY.setBounds(10,50,100,20);
p.add(textY);
textS= new JLabel("X+Y vaut : ");
textS.setBounds(10,80,100,20);
p.add(textS);
editX=new JTextField(20);
editX.setBounds(120,20,100,20);
p.add(editX);
editY=new JTextField(20);
editY.setBounds(120,50,100,20);
p.add(editY);
editS=new JTextField(20);
editS.setBounds(120,80,100,20);
editS.setEditable(false);
p.add(editS);
Border bord=BorderFactory.createRaisedBevelBorder();
buCompute=new JButton("CALCULER");
buCompute.setActionCommand("CALCULER");
buCompute.addActionListener(this);
buCompute.setBorder(bord);
buCompute.setBounds(240,50,100,20);
p.add(buCompute);
c.add(p, BorderLayout.CENTER);
setVisible(true);
}
public void actionPerformed(ActionEvent e)
{
if (e.getActionCommand().equals("CALCULER"))
{
double vx,vy,d1;
try
{
vx=Double.parseDouble(editX.getText());
}
catch(RuntimeException ex)
{
vx=x;
editX.setText(String.valueOf(x));
}
try
{
vy=Double.parseDouble(editY.getText());
}
catch(RuntimeException ex)
{
vy=y;
editY.setText(String.valueOf(y));
}
x=vx;
y=vy;
s=x+y;
editS.setText(String.valueOf(s));
}
}
}