1 import javax.swing.table.AbstractTableModel;
2
3 public class MyTable extends AbstractTableModel {
4 /**
5 *
6 */
7 private static final long serialVersionUID = 1L;
8 Object[][] p = {
9 { "11", "Taipei", new Integer(66), new Integer(32),
10 new Integer(98), new Boolean(false), new Boolean(false) },
11 { "22", "ChiaYi", new Integer(85), new Integer(69),
12 new Integer(154), new Boolean(true), new Boolean(false) },
13 { "33", "ChiaYi", new Integer(85), new Integer(69),
14 new Integer(154), new Boolean(true), new Boolean(false) },
15 { "44", "ChiaYi", new Integer(85), new Integer(69),
16 new Integer(154), new Boolean(true), new Boolean(false) }
17 };
18 String[] n = { "姓名", "居住地", "语文", "数学", "总分", "及格" };
19
20 public int getColumnCount() {
21 return n.length;
22 }
23
24 public int getRowCount() {
25 return p.length;
26 }
27
28 public String getColumnName(int col) {
29 return n[col];
30 }
31
32 public Object getValueAt(int row, int col) {
33 return p[row][col];
34 // return null;
35 }
36
37 public Class getColumnClass(int c) {
38 return getValueAt(0, c).getClass();
39 // return null;
40 }
41
42 public boolean isCellEditable(int rowIndex, int columnIndex) {
43 return true;
44 }
45
46 public void setValueAt(Object value, int row, int col) {
47 p[row][col] = value;
48 fireTableCellUpdated(row, col); // 该方法触发TableModelEvent 事件，tableChanged()会进行相应的处理
49 }
50
51 public void mySetValueAt(Object value, int row, int col) {
52 p[row][col] = value;
53 //fireTableCellUpdated(row, col); //此处不能有，否则会陷入对自身的调用，导致内存溢出。
54 }
55 }
1 import java.awt.BorderLayout;
2 import java.awt.Dimension;
3 import java.awt.event.WindowAdapter;
4 import java.awt.event.WindowEvent;
5 import javax.swing.DefaultCellEditor;
6 import javax.swing.JComboBox;
7 import javax.swing.JFrame;
8 import javax.swing.JLabel;
9 import javax.swing.JScrollPane;
10 import javax.swing.JTable;
11 import javax.swing.event.TableModelEvent;
12 import javax.swing.event.TableModelListener;
13
14 public class TableEventHandle implements TableModelListener {
15 JTable table = null;
16 MyTable mt = null; //tableModel
17 JLabel label = null;
18
19 public TableEventHandle() {
20 JFrame f = new JFrame();
21 mt = new MyTable();
22 mt.addTableModelListener(this);
23 table = new JTable(mt);
24
25 JComboBox c = new JComboBox();
26 c.addItem("Taipei");
27 c.addItem("ChiaYi");
28 c.addItem("HsinChu");
29 table.getColumnModel().getColumn(1)
30 .setCellEditor(new DefaultCellEditor(c));
31
32 table.setPreferredScrollableViewportSize(new Dimension(550, 100)); //设置表格默认展现视图大小
33
34
35 JScrollPane s = new JScrollPane(table); //滚动条
36 f.getContentPane().add(s, BorderLayout.CENTER);
37
38
39 label = new JLabel("修改字段位置：");
40 f.getContentPane().add(label, BorderLayout.SOUTH);
41
42 f.setTitle("TableEventHandle");
43 f.pack();
44 f.setVisible(true);
45 f.addWindowListener(new WindowAdapter() {
46 public void windowClosing(WindowEvent e) {
47 System.exit(0);
48 }
49 });
50 }
51
52 @Override
53 public void tableChanged(TableModelEvent e) {
54 int row = e.getFirstRow();
55 int column = e.getColumn();
56
57 label.setText("修改字段位置：" + (row + 1) + "行" + (column + 1) + "列");
58
59 boolean cheat = ((Boolean) (mt.getValueAt(row, 6))).booleanValue();
60 int grade1 = ((Integer) (mt.getValueAt(row, 2))).intValue();
61 int grade2 = ((Integer) (mt.getValueAt(row, 3))).intValue();
62
63 int total = grade1 + grade2;
64
65
66
67 if (cheat) {
68 if (total > 120)
69 mt.mySetValueAt(new Integer(119), row, 4); //只更新值，不触发事件。改为mt.setValueAt()也可。但会不断触发事件，java应该做了相应处理，否则会内存溢出。
70 else
71 mt.mySetValueAt(new Integer(total), row, 4);
72 mt.mySetValueAt(new Boolean(false), row, 5);
73 } else {
74 if (total > 120)
75 mt.mySetValueAt(new Boolean(true), row, 5);
76 else
77 mt.mySetValueAt(new Boolean(false), row, 5);
78 mt.mySetValueAt(new Integer(total), row, 4);
79 }
80
81
82
83 table.repaint();
84 }
85
86
87
88 public static void main(String args[]) {
89 new TableEventHandle();
90 }
91
92
