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JOptionPane HELP PLEASE (New) [message #1776498]

Fri, 17 November 2017 04:25

Alexis Michaud

Messages: 2
Registered: November 2017

Junior Member

Hello,

I need help to know how to import classes.
Especially the javax.swing.JOptionPane

(My Java package(if that's the way it's called...?) is linked below. There is french(CA) notes in my program, but those are useless)

Here's my code :

(Beginning)


import javax.swing.JOptionPane;

public class Bonjour {

	public static void main(String[] args) {

		JOptionPane.showMessageDialog(null, "Voici mon premier programme java");
	}
}

(End)

I would just like it show "Voici mon premier programme Java" in a window.
I have no error, but when I run it, nothings happen...
No window appears, nothing in console, anywhere....

Help me please, I'm so disappointed that my very first program is a total fail, and it should be so easy...

Thanks :)

Attachment: Bonjour.java
(Size: 0.38KB, Downloaded 34 times)

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Re: JOptionPane HELP PLEASE (New) [message #1776515 is a reply to message #1776498]

Fri, 17 November 2017 08:34

Ed Merks

Messages: 29653
Registered: July 2009

Senior Member

You're are sure you're not just posting this for links to youtube in your Javadoc? Hello world programs just start just by printing to the console. Does that work? Is this *.java file in a Java Project's source folder?

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Re: JOptionPane HELP PLEASE (New) [message #1776562 is a reply to message #1776515]

Fri, 17 November 2017 17:47

Alexis Michaud

Messages: 2
Registered: November 2017

Junior Member

I'm sorry for the link, really not my intention. As mentioned, there's french personal notes and I just didn't think about removing them, since they are "part of the program" and was not sure if it would change something if I erased it.

I have no problem printing Hello World, or anything else in console, but the problem comes when I want to import a new class (Like JOptionPane) and to show text in the window.

Nothing appears... I really don't understand :(

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Re: JOptionPane HELP PLEASE (New) [message #1776592 is a reply to message #1776562]

Sat, 18 November 2017 08:23

Ed Merks

Messages: 29653
Registered: July 2009

Senior Member

This forum is for helping to use Eclipse technology (the IDE and the frameworks), not for helping understand how to use some arbitrary Java framework. Have you tried things like setting a breakpoint and stepping into that method, or adding a print statement before and after the showMessageDialog to see if the code is executing at all?

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