What I'm trying to achieve is a JTextField with a JTable on the bottom, every time a change occurs on the JTextField (type or delete a character) the JTable would update showing the results from it's list of strings that match what is written on the JTextField, and showing all results if empty.
What I don't know how to do :
How to set the event on the JTextField that triggers everytime its text changes
Making the JTable update its values in an efficient way, without using too much memory
Add a DocumentListener to your JTextField. Update the TableModel belonging to your JTable with matches. The JTable will update itself in response.
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I have a JTable whose every cell contains a JList. What I want to do is to make that table editable so that every item on the JList can be edited either using a JTextfield or Choosing an item from another List whenever the user right clicks on that list item in a particular table cell. I also want 2 of my table column need to be set uneditable. Here is a picture of my JTable. I want the every cell and every JList item on that cell to be editable leaving the 'Batch' and 'Break' column to be uneditable.
P.S. I don't want any spoon fed code. I just want an idea how it can be done. And I'll be really grateful if you can reference me some link on the web where I can read to learn how this type of problems can be solved. Thank you..!
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I just got this Jtable on Netbeans . First I want it to auto-calculate some grades, as you can see it has 3 columns (1st, 2nd and 3rd evaluation). I have to type between 0 and 100, in each row.
In the end, get the total and average. This can be displayed in a Jlabel, or a textfield. But, it has to be displayed real-time (as I'm typing the values).
Also, I can't type data on all the cells, just one for each row. How do I do this?
I know I can change the columns to accept only Integer values, but for everything else, I have no idea how to proceed.
In the end, get the total and average. This can be displayed in a Jlabel, or a textfield. But, it has to be displayed real-time (as I'm typing the values).
Well, you would want to update "after" the user has finished editing a cell and saves the value to the table.
So you can use a TableModelListener. You add the TableModelListener to the TableModel. Then when the data is saved an event will be generated and you can recalculate the values and update the label.
Check out the following for a simple example to get your started: TableModelListener and multiple column validation. Your logic in the listener will change based on your exact requirement.
You can do this by attaching a defaultTableModel to your JTable. After attaching TableModel to your JTable. You can use command JTable.addRow(Object[]) to add rows to table.
I want to print a Jpanel with two things in it.
I have a Jtable that could have as many as 500 row in it, and I need to be able to print all of them.
I have a JTextfield under the JTable in the JPanel.
I want to print both of these at the same time. The problem I am having is when I print the jtable it only prints the visible part. What I really care about is the content of the JTable and not the Table itself.
Edit: I use Netbeans to build my Gui so I don't really know how to display the code for the Panel, Table, and TextFields.
Here is a picture of the frame everything is in:
The table can have more rows than you can see at once. All the items here except for the button are in a Jpanel, so I need to print this jpanel. What I have found and tried doesn't print all of the jtable, just what is visible to the user.
When you call table.print() it will offer a dialog and you click print. I can't help you more until you post some code but this works for me.
I have a JTable with Customized CellRenderer and CellEditor, Intially the table is loaded with
a list of values Say with 12 rows and 5 colums, I have a JTextField at the top of the table in which I applied KeyListener and made the Textfield to display like a JComboBox with a list of values as soon as first 3 characters typed in that field, eg. Typing 'met' will display all the medicine names starting with "met", now what I want to do is I have to Implement that Textfield into the Jtable's last row's 2nd column Say 13th row in the situation I mentioned above. and after selecting any 1 medicine from the list of displayed value the JTable could Add a row dynamically and insert a new row with that search textfield, Please Suggest me an Idea and Code for this, also guide me how to apply cellrenderer and celleditor for a particular cell(Cell which contains the dynamic search textfield)...
Thanks a lot in Advance :)
Kindly let us assume jTable2 be your JTable variable name and TextField be your JTextField variable name. Then use the following code with the keylisterner of the text field to get what is wanted:-
javax.swing.table.DefaultTableModel dft= (javax.swing.table.DefaultTableModel)
jTable2.getModel();
jTable2.setModel(dft);
dft.addRow(new Object[1]);
jTable2.setValueAt(TextField.getText(),jTable2.getRowCount()-1,1);
one question with the java jTable class. Actually I am not a Java programmer and just now using Java to design a GUI in Matlab. What I've done is:
A jTable is built into a Matlab GUI.
I used/called a RowFilter in jTable, which can make the jTable to show the filtering results.
Then from the results in this filtered view I used the removeRow method from table model to remove one or several selected rows.
The problem is that everytime if I remove a row, the table content refreshs itself as wanted, but the scroll bar jumps back to the beginning.
Does anyone know how to inhibit this jumping and keep the original view of jTable? Because this helps me not to have to scroll back to find the original position where I started the deleting.
Thank u for ur advice and help.
Invoke the table's scrollRectToVisible() method; pass it the Rectangle returned by getCellRect() for the desired row.