Re: JTable - Null Pointer - GUI editor

2019-06-27 Thread Helmut Leininger
Michael, I can execute it without problems., initialize for PrescriptionTable is executed when it is created (from the menu Display/Prescriptons) What did you specifiy as Main Class? It should be PrescriptionDisplay Rergards Am 27.06.2019 um 18:20 schrieb mmo...@me.com: > Here it is. > > Best

Re: JTable - Null Pointer - GUI editor

2019-06-27 Thread Helmut Leininger
Michael, I am sorry, but I do not believe it. If you have "new NewJFrame()" somewhere and you execute it, the constructor gets executed, too. If not, You made an error (not calling new NewJFrame()) Upload (or post) the whole program. Regards Am 27.06.2019 um 17:17 schrieb mmo...@me.com: > All w

Re: JTable - Null Pointer - GUI editor

2019-06-26 Thread Helmut Leininger
Michael, I assume you have  created your GUI by New JFrame Form", right? At least, I hope so. if you look at main() you will find something like:     new NewJFrame() ... NewJFrame ist the name you have given during the creation of your class / form. This creates the form and first executes its C

Re: JTable - Null Pointer - GUI editor

2019-06-26 Thread Bayless
The code you show does not populate the data vector so it has no rows unless you just haven't shown where you do that. You can't set a value in a row that does not exist, thus null probably. Also num or row could be null. Finally, your column numbers in the setValueAt lines do not agree with yo

Re: JTable - Null Pointer - GUI editor

2019-06-26 Thread Helmut Leininger
Once again: did you initzialize num and row ? When I design your example, I get: ...     scriptTable.setModel(new javax.swing.table.DefaultTableModel(     new Object [][] {     {null, null, null, null},     {null, null, null, null},     {null, null

Re: JTable - Null Pointer - GUI editor

2019-06-26 Thread mmouer
This is the generated code: private void initComponents() {         jScrollPane1 = new javax.swing.JScrollPane();         scriptTable = new javax.swing.JTable();         setSize(new java.awt.Dimension(200, 200));         scriptTable.setModel(new javax.swing.table.DefaultTableModel(            

Re: JTable - Null Pointer - GUI editor

2019-06-26 Thread Bayless
Or maybe you have not created the model or supplied it with starting data vector. Bayless On 6/26/19 12:42 AM, Helmut Leininger wrote: Hi Michael, without more information it is very difficult to say. It could be that either scriptTable, num, or row is not set. I would try to use the deb

Re: JTable - Null Pointer - GUI editor

2019-06-25 Thread Helmut Leininger
Hi Michael, without more information it is very difficult to say. It could be that either scriptTable, num, or row is not set. I would try to use the debugger to find out. Helmut Am 26.06.2019 um 01:20 schrieb mmo...@me.com.INVALID: > I placed a JTable, on a JScrollPane on a JInternalFrame, usi

JTable - Null Pointer - GUI editor

2019-06-25 Thread mmouer
I placed a JTable, on a JScrollPane on a JInternalFrame, using the default DefaultTableModel. When I try and load data into the model I get a java.lang.NullPointerException. scriptTable.setValueAt(num, row, 2); The table is initialized in the constructor method InitComponents. Any idea what I’

RE: [GUI Editor]

2018-04-18 Thread Joseph Huber
Thanks a bunch! That did the trick! I think I looked at that setting tab, but must have just overlooked that setting. Thank again! Joe Huber

Re: [GUI Editor]

2018-04-17 Thread Efrem Mc
Check the box "Show Assistant". I think > this is that for which you are looking. > > On Tue, Apr 17, 2018 at 5:55 PM, Joseph Huber wrote: >> >> Hello! >> >> >> >> In the NetBeans GUI editor, when on the “Design” tab, there is normally a >

Re: [GUI Editor]

2018-04-17 Thread Chuck Davis
Tools->Options->Java->GUI Builder Check the box "Show Assistant". I think this is that for which you are looking. On Tue, Apr 17, 2018 at 5:55 PM, Joseph Huber wrote: > Hello! > > > > In the NetBeans GUI editor, when on the “Design” tab, there is normally a

Re: [GUI Editor]

2018-04-17 Thread Efrem Mc
Hi, I'm not sure, but this is what I have on the bar for NB 8.2 Edit the image and draw a circle to indicate what you are talking about. Thanks Efrem On Tue, Apr 17, 2018 at 8:55 PM, Joseph Huber wrote: > Hello! > > > > In the NetBeans GUI editor, when on the “Design” tab,

[GUI Editor]

2018-04-17 Thread Joseph Huber
Hello! In the NetBeans GUI editor, when on the "Design" tab, there is normally a help bar (with a light bulb icon on the left side and an "X" on the right side) above the form being edited. Somehow I clicked the "X" or somehow did something else to remove the he