Frage zum JFrame Java

import javax.swing.*;
import java.awt.*;

public class Fenster extends JFrame {

    JLabel Text1;

    public Fenster(){

        Font SA = new Font("Arial",Font.BOLD,45);  
        Text1 = new JLabel();
        Text1.setBounds(180,180,1280,180);
        add(Text1);

        setTitle("Fenstertitel");  
        setSize(1280,720);
        setVisible(true);
        setEnabled(true);
    }
}