Open forms

Hi,

I have tried a lot of things but I am stuck... :frusty:

I have a form with a button. When I click the button a new form is opened.
When I dispose form 2 I want to do a refresh of the content of form 1.
Any suggestions on how to do this?

EDIT:
I tried a different aproach: Made a jPanel, but I dont get focus. Here is the code:

Code:

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addPanel.setVisible(true);
addPanel.hasFocus();
addPanel.getCursor();

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But the main panel still has focus. I can "fix" it if I setVisible(false) , but I dont want this.

Any suggestions?

What are the forms?
Normally you would use a JDialog of some sort, with the parent being a JFrame.

Sorry, I mean Jframe... Not form. :(blush):

Then open the second one as a JDialog.
Then it's all done for you.

The second frame is in its own file. Does it have to be inside the same file?

Are you referring to classes that you are defining?
You can put more than one class definition in a file, but its better for maintenance to have one definition per file.
Only one class in a file can be public and it must have the same name as the file.

Quote:

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Originally Posted by Norm

Are you referring to classes that you are defining?
You can put more than one class definition in a file, but its better for maintenance to have one definition per file.
Only one class in a file can be public and it must have the same name as the file.

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Yes it is like that. I have a class that I want to open from another class. And when I close this class and returns to the first I want to run a refresh on a jTable.

The description of your problem is confusing.

Quote:

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I have a class that I want to open from another class

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You don't open a class. You can create an instance of a class and call the class's methods.

Quote:

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when I close this class and returns to the first

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I don't know what it means to close a class. (except for I/O classes that have a close() method)
When you call a method in another class, when that method returns the execution goes back to the statement following the call to the method. When the called method returns you could do the refresh.

Can you try to explain your problem using different terminology?

Sorry for my bad english, but I will try to explain a little better...

I have a class that displays a window with a table. In this table theres data from a MySQL database table.
I also have a button and when I click this, it opens a new window:

Code:

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LedgerAddForm ledgerAddForm = new LedgerAddForm();
ledgerAddForm.setVisible(true);

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In this new window the user can create a new post in the database table.
There is a save button, and when this is clicked, the post is saved and the window is disposed:

Code:

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setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE);

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And it is at this point I would like a refresh on the table in the first window. I have solved this for now with a button:

Code:

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jTable1.setModel(new Classes.LedgerGrid());
super.repaint();

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It is this action I would like to have run when the new post is saved in the second window.

Hope this was more clear...

So, instead of using a JFrame use a JDialog.

(Not sure how many times I can say this before you acknowledge it).

Quote:

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Originally Posted by Tolls

So, instead of using a JFrame use a JDialog.

(Not sure how many times I can say this before you acknowledge it).

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I am sorry if I seam slow, but that is the reason for posting in the new to java section of the forum...
Tried with JDialog, but I haven't solved it yet. That is probably bad coding from me.
So, if anyone has a good documentation with some examples would be great. :)

JDialog API.
JDialog tutorial.

Thanks, now it works almost like I want it, but it doesn't repaint the initial frame. I tried to call a repaint on the parent frame from the dialog, but there was an NullPointerException error.

Heres some of my code:

Code:

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public class LedgerAddForm extends javax.swing.JDialog {
private LedgerForm lf;
public LedgerAddForm(JFrame frame, LedgerForm parent) {
super(frame, true);
lf = parent;

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and this:

Code:

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lf.frame.repaint();
this.dispose();

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Any suggestions?

Quote:

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there was an NullPointerException error.

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What variable is null? Can you give it a value?

It has to be the lf.frame.repaint(); that needs a value...
I commented out this line, and the dialog displays fine, but obviously there is no repaint... :=-:

Quote:

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It has to be the lf.frame.repaint(); that needs a value...

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Try debugging the code to see what variable is null. Use println statements to print out each variable's value.

Quote:

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Originally Posted by asai

It has to be the lf.frame.repaint(); that needs a value...
I commented out this line, and the dialog displays fine, but obviously there is no repaint... :=-:

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So either lf or lf.frame is null.
Unless the stack trace shows something in repaint().

YES! I got it right:

Code:

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super.repaint();

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In the parent frame did the trick. :(happy):

Thanks for help. Again, sorry for my crappy english... (And coding) :(giggle):