Program GUI Part 2

Coba GUI

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

class cobaGUI implements ActionListener{

                public JLabel label, label2;           

                public JButton button1;

                public JTextField text1, text2;

                public cobaGUI(){

                                label = new JLabel ("Masukkan Nama Anda :");

                                label.setLocation(10, 10);

                                label.setSize(label.getPreferredSize());

                                label2 = new JLabel ("Hasil :");

                                label2.setLocation(10, 90);

                                label2.setSize(label2.getPreferredSize());

                                button1 = new JButton ("OK");

                                button1.setLocation(245, 25);

                                button1.setSize(button1.getPreferredSize());

                                button1.setMnemonic('K');

                                button1.addActionListener(this);

               

                                text1 = new JTextField (20);

                                text1.setLocation(10, 25);

                                text1.setSize(text1.getPreferredSize());

                                text2 = new JTextField (20);

                                text2.setLocation(10, 105);

                                text2.setSize(text2.getPreferredSize());

                }

                public void actionPerformed(ActionEvent event) {

                String nama = null;

                nama = text1.getText();

                JButton btn = (JButton) event.getSource();

                if (btn == button1)

                text2.setText(new String().valueOf(nama));

                }

                public void demoframe(){

                JFrame.setDefaultLookAndFeelDecorated(true);

                JFrame frame = new JFrame("Belajar Buat Frame");

                frame.setLayout(null);

                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

                frame.setBounds(0, 0, 350, 200);

                frame.setLocationRelativeTo(null);

                frame.setVisible(true);

                frame.getContentPane().add(label);

                frame.getContentPane().add(label2);

                frame.getContentPane().add(button1);

                frame.getContentPane().add(text1);

                frame.getContentPane().add(text2);

                }

                public static void main (String[] args) {

                cobaGUI app = new cobaGUI();

                app.demoframe();

                }

}

 GUI fak

import javax.swing.*;

import java.awt.event.*;

import java.awt.*;

class GUIfak extends JFrame implements ActionListener

{

                double hasil;

                Container con = new Container();

                JButton hapus, ok;

                JTextField tex1, tex2;

                double fakt(double angka)

                {

                                if(angka == 0)

                                {

                                                return 1;

                                }

                                else

                                {

                                                return angka*fakt(angka-1);

                                }

                }

                public GUIfak()

                {

                                super("faktorial niy..!!");

                                setSize (300,250);

                                ok = new JButton ("faktorial");

                                hapus = new JButton ("hapus");

                                ok.addActionListener (this);

                                hapus.addActionListener (this);

                                JPanel tombol = new JPanel ();

                                hapus.setEnabled (false);

                                tombol.setLayout (new GridLayout(1,2,10,10));

                                tombol.add (hapus);

                                tombol.add(ok);

                                tex1 = new JTextField("");

                                tex2 = new JTextField("");

                                tex2.setEditable (false);

                                JPanel tex = new JPanel();

                                tex.setLayout(new GridLayout (2,1,10,10));

                                tex.add(tex1);

                                tex.add(tex2);

                                con = getContentPane();

                                con.setLayout(null);

                                tex.setBounds(100,80,100,50);

                                tombol.setBounds(50,150,200,30);

                                con.add(tombol);

                                con.add(tex);

                                show();

                                }

                public void actionPerformed (ActionEvent e)

                {

                                try

                                {

                                                if (e.getSource()==ok)

                                                {

                                                                hapus.setEnabled(true);

                                                                String a;

                                                                double angka = Double.parseDouble(tex1.getText());

                                                                hasil = fakt(angka);

                                                }

                                                tex2.setText(Double.toString(hasil));

                                                if (e.getSource() == hapus)

                                                {

                                                                tex1.setText("");

                                                                tex2.setText("");

                                                                hapus.setEnabled(false);

                                                }

                                }

                                catch(Exception ex)

                                {

                                                hapus.setEnabled(false);

                                                JOptionPane.showMessageDialog(this, "Masukkan nilai  yang benar..!!");

                                }

                }

                public static void main(String[] Zzzz)

                {

                                GUIfak q = new GUIfak();

                                q.setResizable(false);

                                q.setDefaultCloseOperation(EXIT_ON_CLOSE);

                }

}