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Thread: Problem getting selected item as string from JComboBox

  1. #1
    Junior Member
    Join Date
    Oct 2010
    Thanked 0 Times in 0 Posts

    Default Problem getting selected item as string from JComboBox

    Hey there I'm trying to implement my own custom JComboBox class as here:

    package guitesting;
    import java.awt.event.ActionEvent;
    import java.awt.event.ActionListener;
    import javax.swing.JComboBox;
    public class ComboBoxPotSelection extends JComboBox implements ActionListener{
        private String selection;
        public ComboBoxPotSelection(String[] pots){
            this.addActionListener(new ActionListener(){
                public void actionPerformed(ActionEvent CmbBoxEvent){
                    JComboBox combo = (JComboBox)CmbBoxEvent.getSource();
                    selection = (String)combo.getSelectedItem();
        public String retStrVal(){
            return selection;

    But when i try to run the implementation Im getting:

    Exception in thread "main" java.lang.ClassCastException: [Ljava.lang.String; cannot be cast to java.lang.String
    at guitesting.ComboBoxPotSelection$1.actionPerformed( ComboBoxPotSelection.java:17)

    I cant understand why I cant cast my selected item to a string??

  2. #2
    Member Darryl.Burke's Avatar
    Join Date
    Mar 2010
    Madgaon, Goa, India
    Thanked 48 Times in 46 Posts

    Default Re: Problem getting selected item as string from JComboBox

    The item you're adding is a String array, so that's what you get back.

    Read the API for JComboBox and follow the link to the Swing tutorial on How to Use Combo Boxes, where you will find a number of code samples.


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