import java.awt.BorderLayout; import java.awt.Color; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.util.Vector;
import javax.swing.DefaultCellEditor; import javax.swing.JButton; import javax.swing.JComboBox; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JScrollPane; import javax.swing.JTable; import javax.swing.table.AbstractTableModel; import javax.swing.table.TableColumnModel;
/** * JTable的实用小例子 * * @author 五斗米 <如转载请保留作者和出处> * @blog http://blog.csdn.net/mq612 */
public class Test { private JFrame frame = null;
private JTable table = null;
private Table_Model model = null;
private JScrollPane s_pan = null;
private JButton button_1 = null, button_2 = null, button_3 = null;
private JPanel pane = null;
public Test() { frame = new JFrame("JTableTest"); pane = new JPanel(); button_1 = new JButton("清除数据"); button_1.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { removeData(); } }); button_2 = new JButton("添加数据"); button_2.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { addData(); } }); button_3 = new JButton("保存数据"); button_3.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { saveData(); } }); pane.add(button_1); pane.add(button_2); pane.add(button_3); model = new Table_Model(20); table = new JTable(model); table.setBackground(Color.white); String[] age = { "16", "17", "18", "19", "20", "21", "22" }; JComboBox com = new JComboBox(age); TableColumnModel tcm = table.getColumnModel(); tcm.getColumn(3).setCellEditor(new DefaultCellEditor(com)); tcm.getColumn(0).setPreferredWidth(50); tcm.getColumn(1).setPreferredWidth(100); tcm.getColumn(2).setPreferredWidth(50);
s_pan = new JScrollPane(table);
frame.getContentPane().add(s_pan, BorderLayout.CENTER); frame.getContentPane().add(pane, BorderLayout.NORTH); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setSize(300, 200); frame.setVisible(true);
}
private void addData() { model.addRow("李逵", true, "19"); table.updateUI(); }
private void removeData() { model.removeRows(0, model.getRowCount()); table.updateUI(); }
// 保存数据,暂时是将数据从控制台显示出来 private void saveData() { int col = model.getColumnCount(); int row = model.getRowCount(); for (int i = 0; i < col; i++) { System.out.print(model.getColumnName(i) + "\t"); } System.out.print("\r\n"); for (int i = 0; i < row; i++) { for (int j = 0; j < col; j++) { System.out.print(model.getValueAt(i, j) + "\t"); } System.out.print("\r\n"); } System.out.println("------------------------------------"); }
public static void main(String args[]) { new Test(); System.out .println("按下保存按钮将会把JTable中的内容显示出来\r\n------------------------------------"); }
}
/** * TableModel类,继承了AbstractTableModel * * @author 五斗米 * */ class Table_Model extends AbstractTableModel {
private static final long serialVersionUID = -7495940408592595397L;
private Vector content = null;
private String[] title_name = { "ID", "姓名", "性别", "年龄" };
public Table_Model() { content = new Vector(); }
public Table_Model(int count) { content = new Vector(count); }
public void addRow(String name, boolean sex, String age) { Vector v = new Vector(4); v.add(0, new Integer(content.size())); v.add(1, name); v.add(2, new Boolean(sex)); v.add(3, age); content.add(v); }
public void removeRow(int row) { content.remove(row); }
public void removeRows(int row, int count) { for (int i = 0; i < count; i++) { if (content.size() > row) { content.remove(row); } } }
/** * 让表格中某些值可修改,但需要setValueAt(Object value, int row, int col)方法配合才能使修改生效 */ public boolean isCellEditable(int rowIndex, int columnIndex) { if (columnIndex == 0) { return false; } return true; }
/** * 使修改的内容生效 */ public void setValueAt(Object value, int row, int col) { ((Vector) content.get(row)).remove(col); ((Vector) content.get(row)).add(col, value); this.fireTableCellUpdated(row, col); }
public String getColumnName(int col) { return title_name[col]; }
public int getColumnCount() { return title_name.length; }
public int getRowCount() { return content.size(); }
public Object getValueAt(int row, int col) { return ((Vector) content.get(row)).get(col); }
/** * 返回数据类型 */ public Class getColumnClass(int col) { return getValueAt(0, col).getClass(); }
|