jtableheader | 易学教程

JTable doesn't show columns names

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问题 here is my code: public class DownloadMainView extends JFrame{ private ArrayList<DownloadItem> downloadList = new ArrayList<DownloadItem>(); private JMenuBar menubar = new JMenuBar(); private JMenu m_task = new JMenu("Tasks"); private JMenu m_tool = new JMenu("Tools"); private JMenu m_help = new JMenu("Help"); private JMenuItem mi_add = new JMenuItem("Add"); private JMenuItem mi_exit = new JMenuItem("Exit"); private JMenuItem mi_options = new JMenuItem("Options"); private JMenuItem mi_help =

Setting JTableHeader holder background colour

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I have a JTable in my program and I wanted to change the color of the JTableHeader . I did this using the following code JTableHeader header = table.getTableHeader(); header.setBackground(Color.WHITE); However, when I dragged the header, I noticed that there was a grey area behind the header as shown in the photo below. How can I set this to white so that it fits in with my JTableHeader ? MCVE import java.awt.Color; import java.awt.GridLayout; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JScrollPane; import javax.swing.JTable; import javax.swing.table.JTableHeader;

JTable header text wrapping for multiline header (custom TableCellRenderer)

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How can I obtain a multiline JTable header where the header column correctly enlarges to fit some text and then wraps to a new line? Something like shown below: Currently searching for the above requirements returns a lot of solutions of which none really solves the problem: http://www.javarichclient.com/multiline-column-header/ Creating multi-line header for JTable Java JTable header word wrap The above solutions all propose using HTML code, for instance: String[] columnNames = { "<html><center>Closing<br>Date</html>", "<html><center>Open<br>Price</html>", "<html>Third<br>column</html>" };

JTable header alignment

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问题 I would like to set the vertical alignment of the label in the header of my JTable-derrived class. I am aware of setVerticalAlignment(SwingConstants.BOTTOM); My header is much higher than the font and I would like to place the text slightly below the vertical centre. How can I do this, without overriding paint() ? THX 回答1: one of ways is to set Renderer , TableHeader by default returns JLabel , for example final TableCellRenderer tcrOs = myTable.getTableHeader().getDefaultRenderer(); myTable

JComboBox fails to expand in JTable TableHeader

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I have read through the majority of the JTable/JComboBox responses to other questions of this ilk, but haven't yet found a solution to my problem. I have created a table that has JComboBox TableHeader elements. None of the JComboBox elements will open to display a list of items. How do I get the item lists for the individual JComboBox elements to display? Please note that a distinguishing element of this question is that the JComboBox is in the TableHeader, not embedded within a JTable cell. Any help is appreciated. SSCE import java.awt.Component; import java.awt.Dimension; import java.util

JTable header text wrapping for multiline header (custom TableCellRenderer)

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问题 How can I obtain a multiline JTable header where the header column correctly enlarges to fit some text and then wraps to a new line? Something like shown below: Currently searching for the above requirements returns a lot of solutions of which none really solves the problem: http://www.javarichclient.com/multiline-column-header/ Creating multi-line header for JTable Java JTable header word wrap The above solutions all propose using HTML code, for instance: String[] columnNames = { "<html>

Nimbus TableHeader was not highlighted as 'pressed'

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The JTableHaeder has no 'pressed' highlighting by default. (Nimbus) NimbusDefaults says it has a default [Pressed] background painter. What should I do, to see this when i click on the TableHeader? UPDATE 1 The NimbusStyle.getExtendedState returns the PRESSED on mouseDown correctly. But the NimbusStyle.getBackgroundPainter(SynthContext) returns null cause there is an null in the NimbusStyle.Values cache for the CacheKey "backgroundPainter$$instance" with this state. What is wrong there? UPDATE 2 My example shows a JTableHeader and a JScrollBar with an 'Pressed Behavior'. For the JScrollBar my

Java JTable header word wrap

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I am trying to get the header on a table to have word wrap. I have managed to do this but the first data row is expanding. The code for the table is: public class GenerateTable extends JTable { private JCheckBox boxSelect = new JCheckBox(); private JTableHeader hdGen; public class LineWrapCellRenderer extends JTextArea implements TableCellRenderer { private static final long serialVersionUID = 1L; int rowHeight = 0; // current max row height for this scan @Override public Component getTableCellRendererComponent( JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int

Highlighting a column header of a JTable

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i'm currently building a little JTable, and want to highlight the column header (and row headers - the row-header part is actually working) when a cell is selected to make it easier to find the associated names with this cell. Here is a picture: I already tried switching out the renderer for the header with this: table.getTableHeader().setDefaultRenderer(new ColumnHeaderRenderer()); But it's only called when i click on the header and always says isSelected is false. This is the code i use for the row-names, including the highlight inside the renderer - code is not by me, i just modified it a

Nimbus TableHeader was not highlighted as 'pressed'

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问题 The JTableHaeder has no 'pressed' highlighting by default. (Nimbus) NimbusDefaults says it has a default [Pressed] background painter. What should I do, to see this when i click on the TableHeader? UPDATE 1 The NimbusStyle.getExtendedState returns the PRESSED on mouseDown correctly. But the NimbusStyle.getBackgroundPainter(SynthContext) returns null cause there is an null in the NimbusStyle.Values cache for the CacheKey "backgroundPainter$$instance" with this state. What is wrong there?