为什么要将简单的事情复杂化而将其删除，则必须反复进行，
if (myTableModel.getRowCount() > 0) { for (int i = myTableModel.getRowCount() - 1; i > -1; i--) { myTableModel.removeRow(i); }}代码示例
import java.awt.*;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import javax.swing.*;import javax.swing.table.*;public class RemoveAddRows extends Jframe { private static final long serialVersionUID = 1L; private Object[] columnNames = {"Type", "Company", "Shares", "Price"}; private Object[][] data = { {"Buy", "IBM", new Integer(1000), new Double(80.50)}, {"Sell", "MicroSoft", new Integer(2000), new Double(6.25)}, {"Sell", "Apple", new Integer(3000), new Double(7.35)}, {"Buy", "Nortel", new Integer(4000), new Double(20.00)} }; private JTable table; private DefaultTableModel model; public RemoveAddRows() { model = new DefaultTableModel(data, columnNames) { private static final long serialVersionUID = 1L; @Override public Class getColumnClass(int column) { return getValueAt(0, column).getClass(); } }; table = new JTable(model) { private static final long serialVersionUID = 1L; @Override public Component prepareRenderer(TableCellRenderer renderer, int row, int column) { Component c = super.prepareRenderer(renderer, row, column); int firstRow = 0; int lastRow = table.getRowCount() - 1; int width = 0; if (row == lastRow) { ((JComponent) c).setBackground(Color.red); } else if (row == firstRow) { ((JComponent) c).setBackground(Color.blue); } else { ((JComponent) c).setBackground(table.getBackground()); } return c; } }; table.setPreferredScrollableViewportSize(table.getPreferredSize()); JScrollPane scrollPane = new JScrollPane(table); add(scrollPane); JButton button1 = new JButton("Remove all rows"); button1.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent arg0) { if (model.getRowCount() > 0) { for (int i = model.getRowCount() - 1; i > -1; i--) { model.removeRow(i); } } System.out.println("model.getRowCount() --->" + model.getRowCount()); } }); JButton button2 = new JButton("Add new rows"); button2.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent arg0) { Object[] data0 = {"Buy", "IBM", new Integer(1000), new Double(80.50)}; model.addRow(data0); Object[] data1 = {"Sell", "MicroSoft", new Integer(2000), new Double(6.25)}; model.addRow(data1); Object[] data2 = {"Sell", "Apple", new Integer(3000), new Double(7.35)}; model.addRow(data2); Object[] data3 = {"Buy", "Nortel", new Integer(4000), new Double(20.00)}; model.addRow(data3); System.out.println("model.getRowCount() --->" + model.getRowCount()); } }); JPanel southPanel = new JPanel(); southPanel.add(button1); southPanel.add(button2); add(southPanel, BorderLayout.SOUTH); } public static void main(String[] args) { RemoveAddRows frame = new RemoveAddRows(); frame.setDefaultCloseOperation(EXIT_ON_CLOSE); frame.pack(); frame.setLocationRelativeTo(null); frame.setVisible(true); }}
