package othertest; import java.awt.BorderLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JScrollPane; import javax.swing.JTable; import javax.swing.table.AbstractTableModel; public class SetValueAtToSetValue extends JFrame { public SetValueAtToSetValue() { final AbstractTableModel model = new MyModel(); final JTable table = new JTable(model); getContentPane().add(new JScrollPane(table), BorderLayout.CENTER); model.setValueAt(new Integer(1), 0, 0); JButton button = new JButton("Increment selected cell"); getContentPane().add(button, BorderLayout.SOUTH); button.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { int row = table.getSelectedRow(); // 得到选中的行,-1代表没有选中任何行 if (row >= 0) { // 改变单元格内容 // 将视图中位于 table.getSelectedColumn() 的列索引映射到表模型中的列索引。 int column = table.convertColumnIndexToModel(table .getSelectedColumn()); int currentValue = ((Integer) model.getValueAt(row, column)) .intValue(); model .setValueAt(new Integer(currentValue + 1), row, column); // 模型改变,表格内容自动变 } else { // 将每个单元格归零 int column = model.getColumnCount(); int rows = model.getRowCount(); for (int i = 0; i < rows; i++) { for (int j = 0; j < column; j++) { model.setValueAt(new Integer(0), i, j); } } } } }); // 调整此窗口的大小,以适合其子组件的首选大小和布局。 // 如果该窗口和/或其所有者还不可显示,则在计算首选大小之前都将变得可显示。在计算首选大小之后,将会验证该窗口。 pack(); } public static void main(String arg[]) { SetValueAtToSetValue ex2 = new SetValueAtToSetValue(); ex2.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); ex2.setVisible(true); } } class MyModel extends AbstractTableModel { // 自定义表格模型 private int[][] table = { new int[3], new int[3], new int[3] }; public MyModel() { for (int i = 0; i < 3; i++) { for (int j = 0; j < 3; j++) { table[i][j] = i + j; } } } public int getColumnCount() { return table.length; } public int getRowCount() { return table[0].length; } public Object getValueAt(int r, int c) { return new Integer(table[r][c]); } public void setValueAt(Object obj, int r, int c) { table[r][c] = ((Integer) obj).intValue(); fireTableCellUpdated(r, c); // 通知所有侦听器,已更新 [row, column] 处的单元格值。 } }
package othertest; 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) { //返回列名,即表头 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(); } }