MessageBox MODULE AIRLINE RESERVATION PROJECT

import java.awt.*;
import java.awt.event.*;
public class MessageBox extends Dialog implements ActionListener{
GridBagLayout gbl;
GridBagConstraints gbc;
FlowLayout F;
Button b1;
Label l;
Font f1,f2;
MessageBox(Frame fm) {
super(fm,true);
setBackground(Color.cyan);
f1 = new Font("Times Roman",Font.BOLD,20);
f2 = new Font("Times Roman",Font.BOLD,15);
gbl=new GridBagLayout();
gbc=new GridBagConstraints();
setLayout(gbl);
l=new Label("Incorrect username or password",Label.CENTER);
l.setFont(f1);
b1 = new Button(" OK ");
b1.setFont(f2);
gbc.gridx=0;
gbc.gridy=0;
gbl.setConstraints(l,gbc);
add(l);
gbc.gridx=0;
gbc.gridy=4;
gbl.setConstraints(b1,gbc);
add(b1);
setSize(350,200);
setTitle("Message Box");
b1.addActionListener(this);
addWindowListener(new X());
} public void actionPerformed(ActionEvent ae) {
if(ae.getSource()==b1) {
setVisible(false);
dispose();
}
}
class X extends WindowAdapter { public void windowClosing(WindowEvent e) {
setVisible(false);
dispose(); }
}
}


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