如何“动画”将行添加到JTable

我想在每次添加行时显示JTable。 我在下面写的代码向表添加一个新行，然后显示jtable 2秒，然后添加另一行，然后显示表。 但是jtable没有显示，它只在添加所有行后显示

Vector rowVector = null; while(rs.next()){ rowVector = new Vector(); for(int i=1;i<=columnCount;i++){ rowVector.add(rs.getString(i)); //System.out.print(rs.getString(i)); } System.out.println(rowVector.toString()); //data.add(rowVector); model.addRow(rowVector); JTable table1 = new JTable(model); JTableHeader header1 = table1.getTableHeader(); table1.setEnabled(false); header1.setResizingAllowed(false); header1.setReorderingAllowed(false); header1.setForeground(Color.white); header1.setBackground(Color.black); jpanedisplay.setViewportView(table1); jpanedisplay.getViewport().setBackground(Color.white); jpanedisplay.setBorder(BorderFactory.createLineBorder(Color.black)); Thread.sleep(3000); } 

Answer 1

您在每次迭代中创建一个新的JTable ，您不需要这样做。 在循环之前将模型添加到表中。 只需在循环中向模型添加行

 DefaultTableModel model = new DefaultTableModel(columnNames, 0); JTable table = new JTable(model); table.setEnabled(false); JTableHeader header1 = table.getTableHeader(); header1.setResizingAllowed(false); header1.setReorderingAllowed(false); header1.setForeground(Color.white); header1.setBackground(Color.black); jpanedisplay.setViewportView(table1); jpanedisplay.getViewport().setBackground(Color.white); jpanedisplay.setBorder(BorderFactory.createLineBorder(Color.black)); ... while(rs.next()){ Vector 

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UPDATE

如果您不希望在数据库任务完成之前添加表，只需使用方法即可

 private JTable createTable(ResultSet rs) { DefaultTableModel model = new DefaultTableModel(columnNames, 0); JTable table = new JTable(model); table.setEnabled(false); JTableHeader header1 = table.getTableHeader(); header1.setResizingAllowed(false); header1.setReorderingAllowed(false); header1.setForeground(Color.white); header1.setBackground(Color.black); while(rs.next()){ Vector 

然后你可以将它添加到任何面板

 panel.add(new JScrollPane(createTable(rs)); 

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更新＃2

Op之后解释说他们试图动态地查看正在添加的行，而不是一次性。

我使用java.swing.Timer来添加行。

 import java.awt.BorderLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.sql.Connection; import java.sql.DriverManager; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JScrollPane; import javax.swing.JTable; import javax.swing.SwingUtilities; import javax.swing.Timer; import javax.swing.table.DefaultTableModel; public class TestTimerTable { String[] cols = {"ID", "Name", "Country Code", "District", "Population"}; DefaultTableModel model = new DefaultTableModel(cols, 0); JTable table = new JTable(model); ResultSet rs = null; JButton start = new JButton("Start"); Timer timer = new Timer(0, null); public TestTimerTable() { initDB(); JScrollPane scroll = new JScrollPane(table); scroll.setViewportView(table); JFrame frame = new JFrame("Test Timer Table"); frame.add(scroll); frame.add(start, BorderLayout.SOUTH); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.pack(); frame.setLocationRelativeTo(null); frame.setVisible(true); timer = new Timer(200, new ActionListener() { @Override public void actionPerformed(ActionEvent e) { try { if (rs.next()) { String s1 = rs.getString(1); String s2 = rs.getString(2); String s3 = rs.getString(3); String s4 = rs.getString(4); String s5 = rs.getString(5); model.addRow(new Object[]{s1, s2, s3, s4, s5}); } else { ((Timer) e.getSource()).stop(); } } catch (SQLException ex) { ex.printStackTrace(); } } }); start.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { timer.start(); } }); } private void initDB() { try { Class.forName("com.mysql.jdbc.Driver"); Connection conn = DriverManager.getConnection( "jdbc:mysql://localhost/...", "...", "..."); PreparedStatement ps = conn.prepareStatement("SELECT * FROM city"); rs = ps.executeQuery(); } catch (Exception ex) { ex.printStackTrace(); } } public static void main(String[] args) { SwingUtilities.invokeLater(new Runnable() { @Override public void run() { new TestTimerTable(); } }); } }