How do you make a JTable column invisible?
To hide one column (or more) in a JTable, don’t give a column name. To get back the hidden data, you must use the TableModel. This technique is not the best one since a exception is generated when Swing tries to display an “hidden column”.
How to hide header in JTable?
We can hide the table header of a JTable by unchecking the JCheckBox and show the table header of a JTable by clicking the JCheckBox.
How can I tell if a row is selected in JTable?
3 Answers. So you can call table. getSelectionModel(). isSelectionEmpty() to find out if any row is selected.
How do you hide a column in Java?
Developers can hide a row or column by calling the HideRow and HideColumn methods of the Cells collection respectively. Both methods take the row/column index as a parameter to hide the specific row or column. Note: It is also possible to hide a row or column if we set the row height or column width to 0 respectively.
How do you add a table in Java?
Creating a Simple Table
- Click the Launch button to run SimpleTableDemo using Java™ Web Start (download JDK 7 or later).
- Click the cell that contains “Snowboarding”.
- Position the cursor over “First Name”.
- Position the cursor just to the right of a column header.
What is JTree function?
Tree-Related Classes and Interfaces
|Class or Interface
|The component that presents the tree to the user.
|Represents a path to a node.
How do I know if JTable is empty?
When you want to use JTable , make the JTable with data which return count from the database. So if there is no data. getRowCount() will return 0 again. And so, you will know whether JTable is empty or not.
How hide rows in Excel in Java?
To hide the row, we can call setZeroHeight() method on the instance of row. This method takes argument either true or false. If the value is true, it will hide the row and unhide the row if value is set false.
How do I make my JPanel scrollable?
- Initialize JPanel , not JScrollPane with picture.
- To add the JPanel to JScrollPane , do: scrollPane.setViewportView (panel)
- Add the JScrollPane , not JPanel to the JFrame.
Why is JTable column header not visible in Java?
Lastly you add JTable to the viewport , there are three sections column header , row header and viewport . If you are going to add JTable to viewport then only column header will be visible otherwise they won’t be displayed – Arun Agarwal Nov 14 ’16 at 10:32
Is there a code to instantiate a JTable?
I have the following code to instantiate a JTable: the table comes up with the right number of rows and columns, but there is no sign of the titles atop the columns.
Where do I put the JTable component in Java?
Drag and drop JTable component on top of JScrollPane (Viewport area). In Structure > Components, table should be a child of scrollPane .
How are column headers displayed in a jscrollpane?
The column headers are displayed by a separate component, a JTableHeader. If the JTable is put inside a JScrollPane, it adds the header automatically as column header of the JScrollPane. If you don’t put it into a JScrollPane, you have to add the header by hand (it’s probably the best to use a BorderLayout). – abg Jun 8 ’12 at 7:55