[swing]需要实现的效果是这样的：当右键单击被选中行时会有个JPopupMenu弹出。右键单击没有选中的行不会弹出。。
监听双击的demo在二楼，谁帮我改改，非常感谢！
import java.awt.BorderLayout; import java.awt.Dimension; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import javax.swing.JFrame; import javax.swing.JMenuItem; import javax.swing.JPanel; import javax.swing.JPopupMenu; import javax.swing.JScrollPane; import javax.swing.JTable; import javax.swing.SwingUtilities; import javax.swing.table.DefaultTableModel; public class JTableDemo extends JFrame{ private JTable tbl; private DefaultTableModel tm; private JPopupMenu[] pms = new JPopupMenu[2]; public JTableDemo() { String[][] data = { {"R1C1", "R1C2"}, {"R2C1", "R2C2"} }; String[] title = {"Column1", "Column2"}; tm = new DefaultTableModel(data, title){ @Override public boolean isCellEditable(int row, int column){ return false; } }; tbl = new JTable(tm); tbl.addMouseListener(new MouseAdapter() { @Override public void mouseClicked(MouseEvent e) { int sr; if ((sr = tbl.getSelectedRow()) == -1) { return; } if (e.getButton() == MouseEvent.BUTTON1 && e.getClickCount() == 2) { pms[sr].show(tbl, e.getX(), e.getY()); } } }); JScrollPane jsp = new JScrollPane(); jsp.setViewportView(tbl); JPanel pan = new JPanel(); pan.setOpaque(true); this.setContentPane(pan); pan.setLayout(new BorderLayout()); pan.add(jsp, BorderLayout.CENTER); JPopupMenu pm = new JPopupMenu(); pm.add(new JMenuItem("Row1")); pms[0] = pm; pm = new JPopupMenu(); pm.add(new JMenuItem("Row2")); pms[1] = pm; } private static void createAndShowGui() { JTableDemo td = new JTableDemo(); td.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); td.setMinimumSize(new Dimension(500, 400)); td.setLocationRelativeTo(null); td.setVisible(true); } public static void main(String[] args) { SwingUtilities.invokeLater(new Runnable() { @Override public void run() { createAndShowGui(); } }); } }
import java.awt.BorderLayout; import java.awt.Dimension; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import javax.swing.JFrame; import javax.swing.JMenuItem; import javax.swing.JOptionPane; import javax.swing.JPanel; import javax.swing.JPopupMenu; import javax.swing.JScrollPane; import javax.swing.JTable; import javax.swing.SwingUtilities; import javax.swing.table.DefaultTableModel; public class JTableDemo extends JFrame { private static final long serialVersionUID = 1L; private JTable tbl; private DefaultTableModel tm; private JPopupMenu[] pms = new JPopupMenu[2]; public JTableDemo() { String[][] data = { { "R1C1", "R1C2" }, { "R2C1", "R2C2" } }; String[] title = { "Column1", "Column2" }; tm = new DefaultTableModel(data, title) { private static final long serialVersionUID = 1L; @Override public boolean isCellEditable(int row, int column) { return false; } }; tbl = new JTable(tm); tbl.addMouseListener(new MouseAdapter() { @Override public void mouseClicked(MouseEvent e) { int sr; // if ((sr = tbl.getSelectedRow()) == -1) { // return; // } if (e.getButton() == MouseEvent.BUTTON3) { pms[tbl.rowAtPoint(e.getPoint())].show(tbl, e.getX(), e.getY()); } } }); JScrollPane jsp = new JScrollPane(); jsp.setViewportView(tbl); JPanel pan = new JPanel(); pan.setOpaque(true); this.setContentPane(pan); pan.setLayout(new BorderLayout()); pan.add(jsp, BorderLayout.CENTER); JPopupMenu pm = new JPopupMenu(); pm.add(new JMenuItem("Row1")); pms[0] = pm; pm = new JPopupMenu(); pm.add(new JMenuItem("Row2")); pms[1] = pm; } private static void createAndShowGui() { JTableDemo td = new JTableDemo(); td.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); td.setMinimumSize(new Dimension(500, 400)); td.setLocationRelativeTo(null); td.setVisible(true); } public static void main(String[] args) { SwingUtilities.invokeLater(new Runnable() { @Override public void run() { createAndShowGui(); } }); } }