macOS Working with GridLayouts

import javax.swing.*;
import java.awt.*;
public class ShowComponents extends JFrame
{
	public ShowComponents (String title)
	{
		super(title);
		Container contentPane = getContentPane();
				
		//create components
		JLabel label1 = new JLabel("Printer: HP Laser Jet 4000 Series PS");
		JLabel label2 = new JLabel("");
		JLabel label3 = new JLabel("");
		JCheckBox checkbox1 = new JCheckBox("Image");
		JRadioButton radiobutton1 = new JRadioButton("Selection");
		JButton button1 = new JButton("OK");
		JCheckBox checkbox2 = new JCheckBox("Text");
		JRadioButton radiobutton2 = new JRadioButton("All");
		JButton button2 = new JButton("Cancel");
		JCheckBox checkbox3 = new JCheckBox("Code");
		JRadioButton radiobutton3 = new JRadioButton("Applet");
		JButton button3 = new JButton("Setup");
	   JLabel label4 = new JLabel("");
		JLabel label5 = new JLabel("");
		JButton button4 = new JButton("Help");
		JLabel label6 = new JLabel("Print Quality");
		JComboBox combo1 = new JComboBox(new String[] {"Option 1", "Option 2"});
		JCheckBox checkbox4 = new JCheckBox("Print To File");
		//add components to the container
		contentPane.setLayout(new GridLayout(10, 10));
		contentPane.add(label1);
		contentPane.add(label2);
		contentPane.add(label3);
		contentPane.add(label4);
		contentPane.add(label5);
		contentPane.add(checkbox1);
		contentPane.add(checkbox2);
		contentPane.add(checkbox3);
		contentPane.add(checkbox4);
		contentPane.add(radiobutton1);
		contentPane.add(radiobutton2);
		contentPane.add(radiobutton3);
		contentPane.add(button1);
		contentPane.add(button2);
		contentPane.add(button3);
		contentPane.add(button4);
		contentPane.add(combo1);
		//close and exit window on click
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		pack();
		setVisible(true);
	}
	
	public static void main(String[] args)
	{
		ShowComponents frame = new ShowComponents("Show Components");
	}
}