Java JTextField

public class MyForm extends JFrame {

    public MyForm() {

        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        setBounds(100, 100, 362, 249);

        setTitle("Kittisay Java");

        setLayout(null);

        // Text Field

        final JTextField txt = new JTextField();

        txt.setBounds(103, 41, 144, 20);

        add(txt);

        txt.setColumns(10);

        // Label

        JLabel lbl = new JLabel("Result");

        lbl.setBounds(103, 120, 144, 14);

        add(lbl);

        // Button

        JButton btn1 = new JButton("Button 1");

        btn1.addActionListener((e) -> {

            lbl.setText("Hello : " + txt.getText());

        });

        btn1.setBounds(128, 72, 99, 23);

        add(btn1);

    }

    public static void main(String[] args) {

      MyForm frm = new MyForm();

      frm.setVisible(true);

    }