CODEWITHSUNDEEP
javaswingjoptionpane
Nwaiwu Gilbert
Nwaiwu Gilbert

Reputation: 163

Using Java's JOptionPane

I am trying to use Java's JOptionnPane module. Here is the code:

Object[] options = {"OK", "Cancel"};
JOptionPane.showInternalOptionDialog(null, "Your choice", "Division", JOptionPane.YES_NO_OPTION, JOptionPane.INFORMATION_MESSAGE, null, options, options[0]);

error: JOptionPane: parentComponent does not have a valid parent at...

Upvotes: 0

Views: 536

Answers (2)

mKorbel
mKorbel

Reputation: 109823

exception talking about uncorrectly user parameters, its value or their orders, 

import java.awt.EventQueue;
import javax.swing.Icon;
import javax.swing.JOptionPane;
import javax.swing.UIManager;

public class MyOptionPane {

    public MyOptionPane() {
        Icon errorIcon = UIManager.getIcon("OptionPane.errorIcon");
        Object[] possibilities = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13};
        Integer i = (Integer) JOptionPane.showOptionDialog(null, 
                null,  "ShowInputDialog", 
                JOptionPane.PLAIN_MESSAGE,1,  errorIcon, possibilities, 0);
        Integer ii = (Integer) JOptionPane.showInputDialog(null,
                "Select number:\n\from JComboBox", "ShowInputDialog",
                JOptionPane.PLAIN_MESSAGE, errorIcon, possibilities, "Numbers");
    }

    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                MyOptionPane mOP = new MyOptionPane();
            }
        });
    }
}

Upvotes: 1

Hemant Metalia
Hemant Metalia

Reputation: 30688

JOptionPane.showInternalInputDialog is to be used with JDesktopPane/JInternalFrames only, where this is the JDesktopPane/JInternalFrames instance.

final JDesktopPane deskpane = new JDesktopPane();
...
String str=JOptionPane.showInternalInputDialog(deskpane, "Enter value");

If not used with either of the 2 above mentioned components it will not produce the correct output, in fact it will throw a Runtime Exception:

java.lang.RuntimeException: JOptionPane: parentComponent does not have a valid pa

Upvotes: 1

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