Swing GUI isn't showing up properly without resizing window

I am developing a Java GUI with Swing. I have not used any paintComponents or paint commands for anything - all Swing. Every time I run the code, I get the JFrame to come up, but all I can see is the background. Only after I resize the window (manually, with the mouse) do I see the boxes and JComboBox, etc. What is the problem? I've tried googling it, and I can't find a thing. Any ideas?
Thanks in advance.

morgalr wrote:
pack();
setVisible(true);Without code, that is my general answer.Fixed it. I didn't think it could be something that easy. But it was. Thanks a lot.

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import java.util.Properties;
import javax.mail.internet.*;
import javax.mail.*;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
* Title: 
* Description: 
* Copyright: Copyright (c) 2003
* Company: 
* @author not attributable
* @version 1.0
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JPanel jPanel1 = new JPanel();
JButton jButton1 = new JButton();
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JLabel jLabel1 = new JLabel();
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filteredbyLoglevel.clear();
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case 4:
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case 6:
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case 7:
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default:
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Swing GUI isn't showing up properly without resizing window

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