Thread: JComboBox won't add array of numbers

I'm creating a JFrame that allows the user to change the font and font size of a piece of text by using 2 JCheckBoxes. The first JCheckBox gives the user every font available and it works fine. The second JCheckBox is where I'm having problems. It should have an array of numbers 1-100 so the user can change the size of font. I have posted the error I am getting below:

Error:
SetFont.java:32: cannot find symbol
symbol : method add(int[])
location: class javax.swing.JComboBox
jcbFonts.add(sizes);
^
1 error

import javax.swing.*;
import java.awt.*;
import java.awt.GraphicsEnvironment;
 
public class SetFont extends JFrame 
{
   private JPanel p1, p2;
   private JLabel jlblFontName, jlblFontSize;
   private JComboBox jcbFonts, jcbSizes;
   private JTextArea jtxtWelcome;
   private JCheckBox  jckbBold, jckbItalic;
 
   public SetFont()                                                                // Default Constructor
	{	
		p1 = new JPanel();
		jlblFontName = new JLabel("Font Name");
 
		GraphicsEnvironment e = GraphicsEnvironment.getLocalGraphicsEnvironment();   // create instance of java.awt.GraphicsEnvironment()
		String[] fontNames = e.getAvailableFontFamilyNames();								  // get all available fonts for user
		jcbFonts = new JComboBox(fontNames);
 
		jlblFontSize = new JLabel("Font Size");
 
		int[] sizes = new int[100];													  		  	  // populate array with font sizes 1-100
		for(int i = 1; i < 100; i ++)
		{
    		jcbFonts.add(sizes);
		}
 
		p1.add(jlblFontName);																		  // add all 4 components to p1
		p1.add(jcbFonts);
		p1.add(jlblFontSize);
		p1.add(jcbSizes);
		add(p1,BorderLayout.NORTH);
 
		add(jtxtWelcome = new JTextArea("Welcome to Java"));
		jtxtWelcome.setSize(3, 20);
 
		p2 = new JPanel();
		p2.add(jckbBold = new JCheckBox("Bold"));
		jckbBold.setMnemonic('B');
		p2.add(jckbItalic = new JCheckBox("Italic"));
		jckbItalic.setMnemonic('I');
 
		add(p2,BorderLayout.SOUTH);
	}
 
   public static void main(String[] args) 
   {
	   SetFont frame = new SetFont();
	   frame.setTitle("Set Font Details");
	   frame.pack();
	   frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	   frame.setLocationRelativeTo(null);	 
	   frame.setVisible(true);
   }
}

I have found and added the addItem() method to get this:

for(int i = 1; i < 100; i ++)
{
   jcbFonts.addItem(sizes);
}

It is compiling but I am getting this error when I run it:

Exception in thread "main" java.lang.NullPointerException
at java.awt.Container.addImpl(Container.java:1045)
at java.awt.Container.add(Container.java:365)
at SetFont.<init>(SetFont.java:38) <-- this line is highlighted in the error
at SetFont.main(SetFont.java:55)

I have added:

jcbSizes = new JComboBox();

This has taken care of the error in main I was getting.
I have also changed the for loop to:

for(int i = 1; i < 100; i ++)
{
jcbSizes.addItem(sizes);
}

The only problem I have now is that instead of adding an array of 1-100, the JCheckbox has added 100 identical lines of hexidecimal code, as shown below:

jcheckbox.JPG

I took your advice and added 'i', it works now. Thank you.