在我的应用程序中，我想用 JTable 的行创建一个翻转效果。例如，当鼠标进入该行时，该行的背景颜色会发生变化；相反，当鼠标退出该行时，该行的颜色将恢复正常。我参考了很多文章。
我得到了一个答案，但是扩展 JTable 的类和我的表在 JInternalFrame 中，所以我的类扩展了 JInternalFrame。
这是我的代码
public class UpdateAdmin extends JInternalFrame {
public static JTable table;
private JScrollPane scrollPane;
public static String rowUserId;
private static String photoUrl;
private int rollOverRowIndex = -1;
/**
* Launch the application.
*/
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
try {
UpdateAdmin frame = new UpdateAdmin();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
public UpdateAdmin() {
addInternalFrameListener(new InternalFrameAdapter() {
@Override
public void internalFrameOpened(InternalFrameEvent arg0) {
updateTable();
}
});
getContentPane().setBackground(new Color(144, 202, 249));
setClosable(true);
setResizable(true);
setMaximizable(true);
setIconifiable(true);
setTitle("View Admin");
setBounds(100, 100, 1200, 571);
getContentPane().setLayout(null);
JLabel lblviewUsers = new JLabel("<html><ul><li>View Users</li></ul></html>");
lblviewUsers.setBounds(10, 25, 188, 23);
lblviewUsers.setFont(new Font("Tahoma", Font.PLAIN, 18));
getContentPane().add(lblviewUsers);
Dimension dim = Toolkit.getDefaultToolkit().getScreenSize();
this.setLocation(dim.width/2-this.getSize().width/2, dim.height/2-this.getSize().height/2);
}
protected void updateTable() {
try {
Class.forName("com.mysql.jdbc.Driver");
Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/librarymanagement", "root", "santosh123");
PreparedStatement ps = con.prepareStatement("select uid, photo, username, firstName, lastName, email, Mob_no, DOB, address, Gender, Usertype from users where Usertype='Admin'");
ResultSet rs = ps.executeQuery();
table = new JTable(buildTableModel(rs));
//table.getColumn("DP").setCellRenderer(new RightTableCellRenderer());
table.setAutoResizeMode(JTable.AUTO_RESIZE_ALL_COLUMNS);
//table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
table.setRowSelectionAllowed(false);
table.setFocusable(false);
table.setFillsViewportHeight(true);
table.setRowHeight(35);
TableColumn tc = table.getColumn("DP");
tc.setMinWidth(40);
tc.setMaxWidth(40);
TableColumn tc1 = table.getColumn("Update");
tc1.setMinWidth(70);
tc1.setMaxWidth(70);
TableColumn tc2 = table.getColumn("Delete");
tc2.setMinWidth(70);
tc2.setMaxWidth(70);
TableColumn tc3 = table.getColumn("UID");
tc3.setMinWidth(65);
tc3.setMaxWidth(65);
/* Dimension dm = new Dimension(5,1);
table.setIntercellSpacing(new Dimension(dm));*/
table.addMouseListener(new JTableButtonMouseListener(table));
//table.getColumn("UID").setCellRenderer(new MyCellRenderer());
table.addMouseMotionListener(new MouseAdapter() {
public void mouseMoved(MouseEvent e) {
Point p = e.getPoint();
hoveredRow = table.rowAtPoint(p);
hoveredColumn = table.columnAtPoint(p);
table.repaint();
}
public void mouseExited(MouseEvent e) {
hoveredRow = hoveredColumn = -1;
table.repaint();
}
});
JTableHeader header = table.getTableHeader();
header.setFont(new Font("Tahoma", Font.BOLD, 14));
addComponentListener(new ComponentAdapter() {
@Override
public void componentResized(ComponentEvent arg0) {
scrollPane.setBounds(10, 80, getContentPane().getWidth()-20, 400);
}
});
TableCellRenderer buttonRenderer = new JTableButtonRenderer();
table.getColumn("Update").setCellRenderer(buttonRenderer);
table.getColumn("Delete").setCellRenderer(buttonRenderer);
final TableColumnModel columnModel = table.getColumnModel();
for (int column = 0; column < table.getColumnCount(); column++) {
int width = 15; // Min width
for (int row = 0; row < table.getRowCount(); row++) {
TableCellRenderer renderer = table.getCellRenderer(row, column);
Component comp = table.prepareRenderer(renderer, row, column);
width = Math.max(comp.getPreferredSize().width +1 , width);
}
if(width > 300)
width=300;
columnModel.getColumn(column).setPreferredWidth(width);
}
DefaultTableCellRenderer centerRenderer = new DefaultTableCellRenderer();
centerRenderer.setHorizontalAlignment( JLabel.CENTER );
table.setDefaultRenderer(String.class, centerRenderer);
//centerRenderer.setHorizontalTextPosition(DefaultTableCellRenderer.CENTER);
/*DefaultTableCellRenderer renderer = new DefaultTableCellRenderer(){
@Override
public Component getTableCellRendererComponent(JTable arg0,Object arg1, boolean arg2, boolean arg3, int arg4, int arg5) {
Component tableCellRendererComponent = super.getTableCellRendererComponent(arg0, arg1, arg2, arg3, arg4, arg5);
int align = DefaultTableCellRenderer.LEFT;
if(align == DefaultTableCellRenderer.LEFT){
align = DefaultTableCellRenderer.CENTER;
}
((DefaultTableCellRenderer)tableCellRendererComponent).setHorizontalAlignment(align);
return tableCellRendererComponent;
}
};
for(int i = 0; i < rs.getMetaData().getColumnCount(); i++)
{
table.getColumnModel().getColumn(+i).setCellRenderer(renderer);
}*/
scrollPane = new JScrollPane(table);
//scrollPane.setBounds(10, 80, getContentPane().getWidth()-20, table.getRowHeight()*(table.getRowCount() + 1));
scrollPane.setBounds(10, 80, 1570, 400);
Dimension maxScrollPaneSize = new Dimension(getContentPane().getWidth()-20, 400);
scrollPane.setMaximumSize(maxScrollPaneSize);
scrollPane.setBackground(new Color(144, 202, 249));
scrollPane.setBorder(BorderFactory.createLineBorder(Color.BLACK, 1, true));
scrollPane.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
scrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED);
getContentPane().add(scrollPane);
// Closes the Connection
rs.close();
ps.close();
con.close();
}
catch (Exception e) {
e.printStackTrace();
}
}
如何将上述链接解决方案应用于我的表？