Brian Lemieux

package BouncingBalls; import java.awt.*; import javax.swing.*; public class Main { public static void main(String[] args) { JPanel p = new JPanel(); p.setPreferredSize(new Dimension(400, 400)); p.setVisible(true); } }

Simply, why the JPanel is not visible when running this. Nothing appears and there are no errors.

Thanks

I did not think there could be a reference variable with the same name. To me it means it would be pointing to the same object. In this case it appears from what I am understanding that the references even though having the same reference name will be pointing to a different object. Ok!

Thanks!

To all:

My publicly displayed name was not correct. I have since corrected it. They were right on it. Shame on me.

Running a command line program. I am including just the things in the pgm that I think is needed to answer this question.

Public static void main{String arg[]) { Arraylist x = new Arraylist() While blah blah { Getinformation numb = new GetInformation(x, y, z, a) x.add(numb) } }

/*In the while loop an object is created using the input.next with answers from the user and sending the info to the constructor of a class which creates an object. In the loop then I want to add the numb to the arraylist x each time. Would this be the code next in line to get the object into the arraylist or can I do that?

and would the object numb be added each position in the arraylist be ok or would the object need to be named something else since it is a reference and all the numbs in the arraylist would point to the same object? If this can't be done then how to I name the next object in line something else the way it is?
*/

What is the code to make an Input Dialog box with multiple input boxes?

I want to get input into 4 input boxes found on an Input Dialog box and
capture those into their own variables and then pass then into an object.

I just need the code to create an Input Dialog with more than one input box for starters and from there I think I can get it.

JoptionPane.showInputDialog()

Windows 95, 98, or Me
If you're using Windows 95, 98, or Me, set environmentals in your autoexec.bat file.
C:\autoexec.bat

Windows NT, 2000, or XP
If you're using Windows NT, 2000, or XP, set environmentals using Control Panel/System/Environment.

Hope this helps
Brian