Java:通过单击表单的其他空间来清除 JTable 中的选择

Question

通过单击表单的其他空间来清除 JTable 中的选择的最佳方法是什么？我试过这个:

    table1.addFocusListener(new MyTableFocusListener());

    ...

    public class MyTableFocusListener implements FocusListener {
        @Override
        public void focusLost(FocusEvent e)
        {
            table1.getSelectionModel().clearSelection();
        }

        @Override
        public void focusGained(FocusEvent e)
        {
        }
    }

但出现异常:

Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: -1

Answer 1

What's the best way to clear selection from JTable by clicking on other space of the form?

这听起来像是 MouseListener 的工作而不是FocusListener 。假设您的表格放置在表单中的某个面板中。例如:

final JTable table = new JTable(model);
JScrollPane scrollPane = new JScrollPane(table);

JPanel formContent = new JPanel();
formContent.add(scrollPane);

您可以向此面板添加一个 MouseListener 并按照 @MadProgramer 的建议使用 JTable.clearSelection() 方法:

formContent.addMouseListener(new MouseAdapter() {
    @Override
    public void mouseClicked(MouseEvent e) {
        if(!table.contains(e.getPoint())) { // contains(Point point) method is inherited from java.awt.Component
            table.clearSelection();
        }
    }            
});

看看:

• JTable.clearSelection()
• Component.contains(Point point)
• MouseAdapter