Program Java


Imansyah Yudha Laksana
contoh                                                                  01import java.awt.*;
02import java.awt.event.*;
03import javax.swing.*;
04 
05public class SimpleLogin extends JFrame implements ActionListener {
06    private JLabel label1, label2;
07    private JTextField txtUser;
08    private JPasswordField pwdPass;
09    private JButton btnLogin, btnExit;
10 
11    public SimpleLogin() {
12        super ("Login here...");
13 
14        Container container = getContentPane();
15        container.setLayout(new FlowLayout());
16 
17        label1 = new JLabel ("Username : ");
18        label2 = new JLabel ("Password : ");
19 
20        txtUser = new JTextField (20);
21        txtUser.setToolTipText("Input Username");
22        pwdPass = new JPasswordField(20);
23 
24        btnLogin = new JButton ("Login");
25        btnLogin.addActionListener(this);
26        btnExit = new JButton ("Exit");
27        btnExit.addActionListener(this);
28 
29        container.add(label1);
30        container.add(txtUser);
31        container.add(label2);
32        container.add(pwdPass);
33        container.add(btnLogin);
34        container.add(btnExit);
35 
36        setSize (300,200);
37        setVisible (true);
38    }
39 
40    public static void main (String args[]) {
41        SimpleLogin test = new SimpleLogin();
42        test.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
43    }
44 
45    private String user = "", pass = "";
46    public void actionPerformed (ActionEvent e) {
47        if (e.getSource() == btnLogin) {
48            user = txtUser.getText();
49            pass = pwdPass.getText();
50            if (user.equals("achmatim") && pass.equals("otim")) {
51                JOptionPane.showMessageDialog(null, "Login successfull");
52            } else {
53                JOptionPane.showMessageDialog(null, "Username and password dosn't match!");
54                txtUser.setText("");
55                pwdPass.setText("");
56                txtUser.requestFocus(true);
57            }
58        } else if (e.getSource() == btnExit){
59            JOptionPane.showMessageDialog(null,"Thanks to try my program. See you..");
60            System.exit(0);
61        }
62    }
63}

 Tampilan

 

contoh program pembuat login sederhana ..

 

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