jtable

问题 Are there any event that is fired when cell is about to be selected? There is ListSelectionListener, but it has event that is fired only after selection has happened. I need some way to cancel selection event and using ListSelectionListener it is not easy as selection has already happened and I need to have some state variable that indicates if selection is normal or is cancel of a previous selection. Are there a way to switch off selection notifications? However this is not 100% good

问题 Are there any event that is fired when cell is about to be selected? There is ListSelectionListener, but it has event that is fired only after selection has happened. I need some way to cancel selection event and using ListSelectionListener it is not easy as selection has already happened and I need to have some state variable that indicates if selection is normal or is cancel of a previous selection. Are there a way to switch off selection notifications? However this is not 100% good

问题 JTable header not showing... My JTable header wont show even if add it into a container like JScrollPane...tell me why is it happen and how can i fix it or debug it.. I search through internet and all they saying is add container to your jtable, i did but still my header are not showing. public void table(){ try{ rs = stat.executeQuery("SELECT * FROM payments;"); Vector<String> header = new Vector<String>(); header.add("PAYMENT"); header.add("AMOUNT"); header.add("MODIFIER"); header.add("DATE

问题 Is there a simple way to sort rows in a JTable with Java 1.5 ( setAutoCreateRowSorter and TableRowSorter appear to be Java 1.6 features)? 回答1: Sorting in Java 1.5 is only possible via libraries. E.g. use the JXTable mentioned from Kaarel or VLTable from here. Another good library is glazedlists which is also used in the Spring Rich Client project. There are even ways to use Glazed Lists with JXTable 回答2: Use the JXTable from the SwingX project, see e.g. SwingLabs: How to Use the SwingX

问题 I deal with numeric data that is often edited up or down by 0.01*Value_of_variable, so a spinner looks like a good choice compared to a usual text cell. I've looked at DefaultCellEditor but it will only take text fields, combo boxes or check boxes. Is there a convenient way to use a spinner? 回答1: ... and overwrite the getCellEditorValue() method: class SpinnerEditor extends DefaultCellEditor { private JSpinner spinner; public SpinnerEditor() { super( new JTextField() ); spinner = new JSpinner

问题 I would like to have the editor in my editable JTables select all text in the cell when starting to edit. I have tried a couple of things that all revolve around calling JTextComponent.selectAll() on the component that is returned from the TableCellEditor.getTableCellEditorComponent method. None of the things I tried worked. In my latest attempt, I altered the SimpleTableDemo class from the Swing tutorial to use a custom TableCellEditor that calls the selectAll method. In the debugger I can

问题 I would like to have the editor in my editable JTables select all text in the cell when starting to edit. I have tried a couple of things that all revolve around calling JTextComponent.selectAll() on the component that is returned from the TableCellEditor.getTableCellEditorComponent method. None of the things I tried worked. In my latest attempt, I altered the SimpleTableDemo class from the Swing tutorial to use a custom TableCellEditor that calls the selectAll method. In the debugger I can

问题 This question already has answers here : ActionListener on JLabel or JTable cell (2 answers) Closed 6 years ago . I have created a table in java in Netbeans and filled it with some data. Now I want to show some detail in a text area corresponding to the particular column in a row when I click on that cell. How can I find out using event listener that on which cell user has clicked. 回答1: Find the location of the click event and get the cell you are searching for: jTable1.addMouseListener(new

问题 Is it possible to merge some cells of a JTable object? (source: codeguru.com) If it's not possible through JTable what is the best approach. Thanks. 回答1: Not out-of-the-box. Here is an example that supports merging arbitrarty cells. This page has several examples of tables with spanning cells. Of course it's old and you get what you pay for. If paid software is an option, JIDE Grids has some really nice Swing table support including custom cell spans. 回答2: You could implement a JTable using a

问题 How to center a value in JTable cell? I'm using Netbeans. 回答1: You need to customize the renderer. To center the first column you can do: DefaultTableCellRenderer centerRenderer = new DefaultTableCellRenderer(); centerRenderer.setHorizontalAlignment( JLabel.CENTER ); table.getColumnModel().getColumn(0).setCellRenderer( centerRenderer ); To center all columns with String data you can do: DefaultTableCellRenderer centerRenderer = new DefaultTableCellRenderer(); centerRenderer