How to disable auto resizing for jComboBox

Question

Hi,
I do not know how to prevent jComboBox to be auto resized according to its content. I put a jComboBox on JPanel with IDE.
After that I use for loop to fill a jComboBox. JComboBox width depends on the content and jComboBox is autoresized. I tried to use set*Size before and after for loop but it did not work as I wish:
        jComboBoxT.setMaximumSize(new java.awt.Dimension(10, 20));
        jComboBoxT.setMinimumSize(new java.awt.Dimension(10, 20));
        jComboBoxT.setPreferredSize(new java.awt.Dimension(10, 20));
        jComboBoxT.setSize(new java.awt.Dimension(10, 20));Could you help me please? The problem is that I have three jComboBox in one row and after autoresizing one disappears...
Best regards,
Primoz

Answer 1

Hi,
I have created SSCCE. I do not like that jComboBox spread over the whole display. I would like that the jComboBox width is only about 2 inches (5cm). If you run example below you will see that jComboBox width auto resize.
Regards,
Primoz
import java.awt.*;
import javax.swing.*;
public class PrimozComboBox extends JPanel {
    JLabel picture;
    public PrimozComboBox() {
        String[] petStrings = { "Bird", "Cat", "Dog", "Rabbit", "Pig" };
        String[] cityStrings = { "New York", "Ljubljana", "Chicago" };
        JComboBox petList = new JComboBox(petStrings);
        petList.addItem("This is very long pet name, which could spread over many lines");
        add(petList);
        JComboBox cityList = new JComboBox(cityStrings);     
        cityList.addItem("This is very long city name, which could spread over many lines");
        add(cityList);
    private static void createAndShowGUI() {
        //Create and set up the window.
        JFrame frame = new JFrame("ComboBoxDemo");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        //Create and set up the content pane.
        JComponent newContentPane = new PrimozComboBox();
        newContentPane.setOpaque(true); //content panes must be opaque
        frame.setContentPane(newContentPane);
        //Display the window.
        frame.pack();
        frame.setVisible(true);
    public static void main(String[] args) {
        //Schedule a job for the event-dispatching thread:
        //creating and showing this application's GUI.
        javax.swing.SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                createAndShowGUI();
}