JFrame - Setting the Row and Column in a GridLayout

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import java.awt.GridLayout;

import javax.swing.JButton;
import javax.swing.JFrame;

public class GridLayoutTest {

  public static void main(String[] args) {
    JFrame.setDefaultLookAndFeelDecorated(true);
    JFrame frame = new JFrame("GridLayout Test");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setLayout(new GridLayout(3, 2));
    frame.add(new JButton("Button 1"));
    frame.add(new JButton("Button 2"));
    frame.add(new JButton("Button 3"));
    frame.add(new JButton("Button 4"));
    frame.add(new JButton("Button 5"));
    frame.add(new JButton("Button 6"));
    frame.add(new JButton("Button 7"));
    frame.add(new JButton("Button 8"));
    frame.pack();
    frame.setVisible(true);
  }
}

I got the code from this tutorial website: http://ift.tt/1et1vM4

This program displays 8 buttons on the screen. I'm having trouble understanding the layout. Notice that row=3, and column=2. When I run the program, the arrangement of the button is row=3 and column=3....

Changing the number of rows actually changes the layout, but changing the number of columns doesn't changes the layout and the number of column will always remain as 2. Why is that?

asked 33 secs ago

J0nathan Lam

1

JFrame - Setting the Row and Column in a GridLayout