import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class LatGUI extends JFrame {

JLabel lbl=new JLabel("Belajar GUI");
JLabel label1=new JLabel("Nama Depan") ;
JLabel label2=new JLabel("Nama Belakang");
JLabel label3=new JLabel("Nama Lengkap");
JTextField text1=new JTextField();
JTextField text2=new JTextField();
JTextField text3=new JTextField();
JButton b1=new JButton("Proses");
JButton b2=new JButton("Hapus");

public LatGUI() {
   add(lbl);
   add(b1);
   add(b2);
   add(label1);
   add(label2);
   add(label3);
   add(text1);
   add(text2);
   add(text3);

   setLayout(null);

   lbl.setBounds(100,20,100,25);
   label1.setBounds(15,50,100,25);
   label2.setBounds(15,80,100,25);
   label3.setBounds(15,110,100,25);

   text1.setBounds(120,50,100,25);
   text2.setBounds(120,80,100,25);
   text3.setBounds(120,110,100,25);

   b1.setBounds(15,200,80,25);
   b2.setBounds(120,200,80,25);


   b1.addActionListener(new ActionListener()
  {
        public void actionPerformed(ActionEvent e)
       {
              text3.setText(text1.getText()+" "+text2.getText());
        }
    });

    b2.addActionListener(new ActionListener()
    {
           public void actionPerformed(ActionEvent arum)
           {
                text1.setText("");
                text2.setText("");
                text3.setText("");
            }
   });

}

public static void main(String[] args) {

LatGUI latihan=new LatGUI();
latihan.setTitle("Latihan GUI");
latihan.setSize(300,300);
latihan.setVisible(true);
}
}


output dari program di atas adalah:

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