Java JTable disable single cell selection highlighting

Question

I have a JTable with three columns in each row, see image:

For some reason, depending on column i, I select the small dark blue border around it (V140116554) in the image above.

I am currently using this to select the entire row:

vTable.setRowSelectionAllowed(true); 

How can I disable this?

EDIT:

Added class:

 public class VisitorRenderer extends DefaultTableCellRenderer { @Override public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) { super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column); setBorder(noFocusBorder); return this; } } 

And added:

 vTable.setDefaultRenderer(String.class, new VisitorRenderer()); 

But still get the border

Answer 1

TableCellRenderer is responsible for drawing a focus rectangle around the current focused cell. You need to provide your own render, capable of either overriding this function, or providing your own ...

For instance;

 public class MyRenderer extends DefaultTableCellRenderer { @Override public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) { super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column); setBorder(noFocusBorder); return this; } } 

This uses the DefaultTableCellRenderer as the base renderer and sets the Border component to noFocusBorder which is defined in the DefaultTableCellRenderer as EmptyBorder

Then you will need to install this renderer as the default renderer for the involved columns. Check how to use tables for more details.

Refresh with example

It works fine for me ...

 import java.awt.Color; import java.awt.Component; import java.awt.EventQueue; import javax.swing.JFrame; import javax.swing.JScrollPane; import javax.swing.JTable; import javax.swing.UIManager; import javax.swing.UnsupportedLookAndFeelException; import javax.swing.border.LineBorder; import javax.swing.table.DefaultTableCellRenderer; import javax.swing.table.DefaultTableModel; public class TableRenderer { public static void main(String[] args) { new TableRenderer(); } public TableRenderer() { EventQueue.invokeLater(new Runnable() { @Override public void run() { try { UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName()); } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) { ex.printStackTrace(); } DefaultTableModel model = new DefaultTableModel(new Object[][]{{"", "One"}, {"", "Two"}}, new Object[]{"Check", "Vistor"}) { @Override public Class<?> getColumnClass(int columnIndex) { return String.class; } }; JTable table = new JTable(model); table.setRowSelectionAllowed(true); table.setShowGrid(false); table.setDefaultRenderer(String.class, new VisitorRenderer()); JFrame frame = new JFrame("Testing"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.add(new JScrollPane(table)); frame.pack(); frame.setLocationRelativeTo(null); frame.setVisible(true); } }); } public class VisitorRenderer extends DefaultTableCellRenderer { @Override public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) { super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column); setBorder(noFocusBorder); return this; } } } 

And just to be sure, I changed setBorder(noFocusBorder); to ...

 if (hasFocus) { setBorder(new LineBorder(Color.RED)); } 

TableModel throughout, the visitor column class type is not TableModel like String in TableModel ...

Updated with proxy rendering concept

Because you want to remove the focus border from each cell. You have three options ...

1. Write a custom cell renderer for each Class feature you may need for your table. This can take a lot of time and repeat the code many times to achieve only a small effect.
2. Do nothing to live with it ...
3. Use the "proxy" renderer. This is a renderer that uses another TableCellRenderer to perform the actual rendering process, but applies some minor changes to the result, for example, removing the border ...

...

 public static class ProxyCellRenderer implements TableCellRenderer { protected static final Border DEFAULT_BORDER = new EmptyBorder(1, 1, 1, 1); private TableCellRenderer renderer; public ProxyCellRenderer(TableCellRenderer renderer) { this.renderer = renderer; } @Override public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) { Component comp = renderer.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column); if (comp instanceof JComponent) { ((JComponent)comp).setBorder(DEFAULT_BORDER); } return comp; } } 

Instead of doing something like ...

 table.setDefaultRenderer(String.class, new VisitorRenderer()); 

What we did before, we would do it instead ...

 table.setDefaultRenderer(String.class, new ProxyCellRenderer(table.getDefaultRenderer(String.class))); 

This means that we can take advantage of the default rendering tool, not knowing what it can be, but also providing our own requirements for it ...

Answer 2

If you absolutely don't need a border for any cell in this table, just apply MyRenderer to all cells, regardless of class. You can do it as follows:

table.setDefaultRenderer(Object.class, new MyRenderer());