Hi folks,

Please explain me why this two program behave differently.
The only difference is in the use of JButton and JLabel, respectively.

Here is the first with JButton:
---
package com.buday.buttonhello;

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

public class Main {
   
   public static void main(String[] args) {
       JFrame frame = new JFrame("Hello World Application");
       JButton b = new JButton("Hello!");
       
       frame.getContentPane().setLayout(new BorderLayout());
       frame.getContentPane().add(b, BorderLayout.CENTER);
       
       frame.pack();
       frame.setVisible(true);
   }
   
}
---

Running this, if I resize the window, the button shows itself in the
very center.

The version with label is (just to free you from editing the
previous):

---
package com.buday.labelhello;

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

public class Main {
   
   public static void main(String[] args) {
       JFrame frame = new JFrame("Hello World Application");
       JLabel label = new JLabel("Hello!");
       
       frame.getContentPane().setLayout(new BorderLayout());
       frame.getContentPane().add(label, BorderLayout.CENTER);
       
       frame.pack();
       frame.setVisible(true);
   }
   
}
---
Running this, the label appears on the left edge of the window,
positioned in the center vertically. Can I make this label to appear
in the very center of the window? How? Any help is appreciated.

- Gergely