GUI appears grey until resize randomly. Why?

[AcousticBruce]

I have about 2 questions.

1) If I add certain text lengths to JTextField() the GUI appears gray until I resize it. "Hi" verses "Hello Java" makes all the difference. Only does this sometimes?!?

JTextField pageAddress = new JTextField("Hello Java", 20);

It also makes a difference messing with the boolean value of JCheckBox() making it true vs leaving it out changes the issue above.

JCheckBox jumboSize = new JCheckBox("Jumbo Size");

2) JLabel.LEFT CENTER or RIGHT doesnt seem to do anything. Why is this?






Here is all my code for my test program. Perhaps I am missing something?

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

public class Playback extends JFrame {
    public Playback() {
        setTitle("Note Trainer");
        setSize(370,360);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setVisible(true);
        FlowLayout flo = new FlowLayout();
        setLayout(flo);

        JLabel pageLabel = new JLabel("Web page address: ", JLabel.LEFT);
        JTextField pageAddress = new JTextField("He", 20);
        add(pageLabel);
        add(pageAddress);

        JButton A = new JButton("A");
        JButton B = new JButton("B");
        JButton C = new JButton("C");
        JButton D = new JButton("D");
        JButton E = new JButton("E");
        JButton F = new JButton("F");
        JButton G = new JButton("G");
        add(A);
        add(B);
        add(C);
        add(D);
        add(E);
        add(F);
        add(G);
        JCheckBox jumboSize = new JCheckBox("Jumbo Size");
        add(jumboSize);

    }

    public static void main(String[] args) {
        Playback pb = new Playback();
    }
}

[Fubarable]

Call setVisible(true) after adding all your components.

[AcousticBruce]

Ahh... I thought that was needed once within { }.

Thank you.

[Fubarable]

Ahh... I thought that was needed once within { }.

Thank you.

It is only needed once, but it should be called only after the GUI has been set up.