Java 设置jtable单元格的事件

我正在开发一个需要使用jtable来接受数据库输入的项目

我想为jtable中的单元格设置event listner，任何关于用户编辑完单元格后使用什么事件的建议，以便我保存单元格内容并允许用户移动到下一个单元格

我有这个代码，但它不是我想要的工作，请你可以帮我看看，并告诉我哪里我犯了错误

DefaultTableModel tablemodel;

/**
 * Creates new form Tabletest
 */
public Tabletest(java.awt.Frame parent, boolean modal) {
    super(parent, modal);
    initComponents();
    SetTable();
}

/**
 * This method is called from within the constructor to initialize the form.
 * WARNING: Do NOT modify this code. The content of this method is always
 * regenerated by the Form Editor.
 */
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {

    jScrollPane1 = new javax.swing.JScrollPane();
    jTable1 = new javax.swing.JTable();

    setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE);

    jTable1.setModel(new javax.swing.table.DefaultTableModel(
        new Object [][] {
            {null, null, null, null},
            {null, null, null, null},
            {null, null, null, null},
            {null, null, null, null}
        },
        new String [] {
            "Title 1", "Title 2", "Title 3", "Title 4"
        }
    ));
    jTable1.addMouseListener(new java.awt.event.MouseAdapter() {
        public void mouseClicked(java.awt.event.MouseEvent evt) {
            jTable1MouseClicked(evt);
        }
    });
    jTable1.addKeyListener(new java.awt.event.KeyAdapter() {
        public void keyPressed(java.awt.event.KeyEvent evt) {
            jTable1KeyPressed(evt);
        }
    });
    jScrollPane1.setViewportView(jTable1);

    javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
    getContentPane().setLayout(layout);
    layout.setHorizontalGroup(
        layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
        .addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 400, Short.MAX_VALUE)
    );
    layout.setVerticalGroup(
        layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
        .addGroup(layout.createSequentialGroup()
            .addGap(38, 38, 38)
            .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 190, javax.swing.GroupLayout.PREFERRED_SIZE)
            .addContainerGap(72, Short.MAX_VALUE))
    );

    pack();
}// </editor-fold>

private void jTable1KeyPressed(java.awt.event.KeyEvent evt) {
    // TODO add your handling code here:
}

private void jTable1MouseClicked(java.awt.event.MouseEvent evt) {
    jTable1.getColumn(jTable1.getColumnName(jTable1.getSelectedColumn())).setCellEditor(new tablecell2()); // TODO add your handling code here:
}

/**
 * @param args the command line arguments
 */
public static void main(String args[]) {
    /* Set the Nimbus look and feel */
    //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
    /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
     * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html 
     */
    try {
        for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
            if ("Nimbus".equals(info.getName())) {
                javax.swing.UIManager.setLookAndFeel(info.getClassName());
                break;
            }
        }
    } catch (ClassNotFoundException ex) {
        java.util.logging.Logger.getLogger(Tabletest.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
    } catch (InstantiationException ex) {
        java.util.logging.Logger.getLogger(Tabletest.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
    } catch (IllegalAccessException ex) {
        java.util.logging.Logger.getLogger(Tabletest.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
    } catch (javax.swing.UnsupportedLookAndFeelException ex) {
        java.util.logging.Logger.getLogger(Tabletest.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
    }
    //</editor-fold>

    /* Create and display the dialog */
    java.awt.EventQueue.invokeLater(new Runnable() {
        public void run() {
            Tabletest dialog = new Tabletest(new javax.swing.JFrame(), true);
            dialog.addWindowListener(new java.awt.event.WindowAdapter() {
                @Override
                public void windowClosing(java.awt.event.WindowEvent e) {
                    System.exit(0);
                }
            });
            dialog.setVisible(true);
        }
    });
}
// Variables declaration - do not modify
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JTable jTable1;
// End of variables declaration

void SetTable(){
    try {
        tablemodel= new DefaultTableModel();
        tablemodel.addColumn("field1");
        tablemodel.addColumn("field2");
        tablemodel.addColumn("field3");
        tablemodel.addColumn("field4");

        Object[] a = {"10","20","30","40"};
        Object[] b = {"100","200","300","400"};
        tablemodel.addRow(a);
        tablemodel.addRow(b);
        jTable1.setModel(tablemodel);
    } catch (Exception e) {
    }
}

void saveresult() {
    double tot = Double.parseDouble(jTable1.getValueAt(jTable1.getSelectedRow(), jTable1.getSelectedColumn()).toString());
    JOptionPane.showMessageDialog(rootPane, tot+ " the value will be save into db");

}

class tablecell2 extends JTextField implements TableCellEditor {

    int tablecell2_column;
    Object value;

    @Override
    public Component getTableCellEditorComponent(JTable table, final Object value, boolean isSelected, int row, int column) {
        this.stopCellEditing();
        this.tablecell2_column = column;
        this.value = value;
        //this.setFont(null);
        System.out.println(">>tablecell2>>");
        if (value != null) {
            setText(value.toString());
        }

        this.addFocusListener(new java.awt.event.FocusAdapter() {
            public void focusLost(java.awt.event.FocusEvent evt) {
                jTextField1FocusLost(evt);
            }

            private void jTextField1FocusLost(FocusEvent evt) {
                //setText(value.toString());
                // new setResults().getbyclass(jTable1, ClassCombo.getSelectedItem().toString(), acadYr, term, subjectCombo.getSelectedItem().toString());
                //JOptionPane.showMessageDialog(currentCell, "focus");
            }
        });

        this.setPreferredSize(new java.awt.Dimension(15, 20));
        this.setFont(new java.awt.Font("", 10, 9));
        //this.setFont(new java.awt.Font);
        /* this.addFocusListener(null);addFocusListener(new java.awt.event.FocusAdapter() {
         @Override
         public void focusLost(java.awt.event.FocusEvent evt) {
         jTable1FocusLost(evt);
         }
         });*/
        this.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                jTextFieldMouseClicked(evt);
            }

            private void jTextFieldMouseClicked(MouseEvent evt) {
                setText("");
            }
        });
        this.addKeyListener(new java.awt.event.KeyAdapter() {
            @Override
            public void keyPressed(java.awt.event.KeyEvent evt) {
                jTextField10KeyPressed(evt);
            }
        });
        return this;
    }

    @Override
    public Object getCellEditorValue() {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public boolean isCellEditable(EventObject anEvent) {
        return true;
    }

    @Override
    public boolean shouldSelectCell(EventObject anEvent) {
        return true;
    }

    @Override
    public boolean stopCellEditing() {
        return true;
    }

    @Override
    public void cancelCellEditing() {
    }

    @Override
    public void addCellEditorListener(CellEditorListener l) {
    }

    @Override
    public void removeCellEditorListener(CellEditorListener l) {
    }

    private void jTable1FocusLost(java.awt.event.FocusEvent evt) {
        JOptionPane.showMessageDialog(this, "666");

    }

    private void jTextField10KeyPressed(java.awt.event.KeyEvent evt) {
        int keycode = evt.getKeyCode();
        StringBuffer sb = new StringBuffer();
        sb.append("" + evt.getKeyChar());
        //jTextField10.setText(sb.toString());
        System.out.println("key code " + keycode);
        if (keycode == 10) {

            setText(this.getText());
            if (tablecell2_column == 3) {
                //Scores.CA_SCORE = Double.parseDouble(this.getText());
            } else if (tablecell2_column == 4) {
                //Scores.EXAM_SCORE = Double.parseDouble(this.getText());
            }
            //jTextField10.setText("");
            sb.delete(0, sb.length());
            //JOptionPane.showMessageDialog(currentCell, Scores.CA_SCORE);
            saveresult();
            this.nextFocus();
            //new setResults().getbyclass(jTable1, ClassCombo.getSelectedItem().toString(), acadYr, term, subjectCombo.getSelectedItem().toString());

        }        // TODO add your handling code here:
    }
}

DefaultTableModel tablemodel；
/**
*创建新表单Tabletest
*/
公共表测试（java.awt.Frame父级，布尔模式）{
超级（父级、模态）；
初始化组件（）；
可设置（）；
}
/**
*从构造函数中调用此方法来初始化表单。
*警告：请勿修改此代码。此方法的内容始终是
*由表单编辑器重新生成。
*/
@抑制警告（“未选中”）
// 
私有组件（）{
jScrollPane1=newjavax.swing.JScrollPane（）；
jTable1=newjavax.swing.JTable（）；
setDefaultCloseOperation（javax.swing.WindowConstants.DISPOSE\u ON\u CLOSE）；
jTable1.setModel（新的javax.swing.table.DefaultTableModel(
新对象[][]{
{null，null，null，null}，
{null，null，null，null}，
{null，null，null，null}，
{null，null，null，null}
},
新字符串[]{
“标题1”、“标题2”、“标题3”、“标题4”
}
));
jTable1.addMouseListener（新java.awt.event.MouseAdapter（）{
public void mouseClicked（java.awt.event.MouseEvent evt）{
JTable1鼠标点击（evt）；
}
});
jTable1.addKeyListener（新java.awt.event.KeyAdapter（）{
按下public void键（java.awt.event.KeyEvent evt）{
jTable1KeyPressed（evt）；
}
});
jScrollPane1.setViewportView（jTable1）；
javax.swing.GroupLayout=newjavax.swing.GroupLayout（getContentPane（））；
getContentPane（）.setLayout（布局）；
layout.setHorizontalGroup(
createParallelGroup（javax.swing.GroupLayout.Alignment.LEADING）
.addComponent（jScrollPane1，javax.swing.GroupLayout.DEFAULT\u SIZE，400，Short.MAX\u值）
);
layout.setVerticalGroup(
createParallelGroup（javax.swing.GroupLayout.Alignment.LEADING）
.addGroup（layout.createSequentialGroup（）
.addGap（38,38,38）
.addComponent（jScrollPane1，javax.swing.GroupLayout.PREFERRED_SIZE，190，javax.swing.GroupLayout.PREFERRED_SIZE）
.addContainerGap（72，简称最大值））
);
包装（）；
}// 
私有void jTable1KeyPressed（java.awt.event.KeyEvent evt）{
//TODO在此处添加您的处理代码：
}
私有void jTable1MouseClicked（java.awt.event.MouseEvent evt）{
jTable1.getColumn（jTable1.getColumnName（jTable1.getSelectedColumn（））.setCellEditor（new tablecell2（））；//要在此处添加处理代码：
}
/**
*@param指定命令行参数
*/
公共静态void main（字符串参数[]）{
/*设置Nimbus的外观和感觉*/
//
/*如果Nimbus（在JavaSE6中引入）不可用，请使用默认的外观。
*详情请参阅http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html 
*/
试一试{
for（javax.swing.UIManager.LookAndFeelInfo:javax.swing.UIManager.getInstalledLookAndFeels（））{
if（“Nimbus”.equals（info.getName（）））{
setLookAndFeel（info.getClassName（））；
打破
}
}
}捕获（ClassNotFoundException ex）{
getLogger（Tabletest.class.getName（））.log（java.util.logging.Level.SEVERE，null，ex）；
}catch（实例化异常）{
getLogger（Tabletest.class.getName（））.log（java.util.logging.Level.SEVERE，null，ex）；
}捕获（非法访问例外）{
getLogger（Tabletest.class.getName（））.log（java.util.logging.Level.SEVERE，null，ex）；
}catch（javax.swing.UnsupportedLookAndFeelException ex）{
getLogger（Tabletest.class.getName（））.log（java.util.logging.Level.SEVERE，null，ex）；
}
//
/*创建并显示对话框*/
invokeLater（new Runnable（））{
公开募捐{
Tabletest dialog=newtabletest（newjavax.swing.JFrame（），true）；
addWindowListener（新java.awt.event.WindowAdapter（）{
@凌驾
公共无效窗口关闭（java.awt.event.WindowEvent e）{
系统出口（0）；
}
});
对话框.setVisible（true）；
}
});
}
//变量声明-不修改
私有javax.swing.JScrollPane-jScrollPane1；
私有javax.swing.JTable jTable1；
//变量结束声明
void setable（）{
试一试{
tablemodel=新的DefaultTableModel（）；
tablemodel.addColumn（“字段1”）；
tablemodel.addColumn（“字段2”）；
tablemodel.addColumn（“字段3”）；
tablemodel.addColumn（“字段4”）；
对象[]a={“10”、“20”、“30”、“40”}；
对象[]b={“100”、“200”、“300”、“400”}；
tablemodel.addRow（a）；
tablemodel.addRow（b）；
jTable1.setModel（tablemodel）；
}捕获（例外e）{
}
}
void saveresult（）{
double-tot=double.parseDouble（jTable1.getValueAt（jTable1.getSelectedRow（），jTable1.getSelectedColumn（））.toString（））；
showMessageDialog（rootPane，tot+“值将保存到db中”）；
}
类tablecell2扩展了JTextField，实现了TableCellEditor{
int tablecell2_列；
目标价值；
@凌驾
公共组件getTableCellEditorComponent（JTable表、最终对象值、布尔isSelected、int行、int列）{
this.stopCellEditing（）；
this.tablecell2_column=column；
这个值=值；
//此.setFont（空）；
System.out.println（“>>tablecell2>>”；
private static final long serialVersionUID = 1L;
public JTable table =  new javax.swing.JTable();
private String[] columnNames = {"Item", "Quantity", "Price", "Cost"};
private Object[][] data = {
    {"Bread", new Integer(1), new Double(1.11), new Double(1.11)},
    {"Milk", new Integer(1), new Double(2.22), new Double(2.22)},
    {"Tea", new Integer(1), new Double(3.33), new Double(3.33)},
    {"Cofee", new Integer(1), new Double(4.44), new Double(4.44)}};
private TableModelListener tableModelListener;

public TableProcessing() {

    DefaultTableModel model = new DefaultTableModel(data, columnNames);
    table = new JTable(model) {

        private static final long serialVersionUID = 1L;

        @Override// Returning the Class of each column will allow different renderers
        public Class getColumnClass(int column) { // to be used based on Class
            return getValueAt(0, column).getClass();
        }

        @Override //  The Cost is not editable
        public boolean isCellEditable(int row, int column) {
            int modelColumn = convertColumnIndexToModel(column);
            return (modelColumn == 3) ? false : true;
        }
    };
    table.setPreferredScrollableViewportSize(table.getPreferredSize());
    //http://stackoverflow.com/questions/7188179/jtable-focus-query/7193023#7193023
    table.setCellSelectionEnabled(true);
    KeyStroke tab = KeyStroke.getKeyStroke(KeyEvent.VK_TAB, 0);
    InputMap map = table.getInputMap(JTable.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT);
    map.put(tab, "selectNextRowCell");
    //http://stackoverflow.com/questions/7188179/jtable-focus-query/7193023#7193023
    JScrollPane scrollPane = new JScrollPane(table);
    getContentPane().add(scrollPane);
    setTableModelListener();
}

private void setTableModelListener() {
    System.out.println("enter listen");
    tableModelListener = new TableModelListener() {

        @Override
        public void tableChanged(TableModelEvent e) {
            if (e.getType() == TableModelEvent.UPDATE) {
                System.out.println("Cell " + e.getFirstRow() + ", "
                        + e.getColumn() + " changed. The new value: "
                        + table.getModel().getValueAt(e.getFirstRow(),
                        e.getColumn()));
                int row = e.getFirstRow();
                int column = e.getColumn();
                if (column == 1 || column == 2) {
                    TableModel model = table.getModel();
                    int quantity = ((Integer) model.getValueAt(row, 1)).intValue();
                    double price = ((Double) model.getValueAt(row, 2)).doubleValue();
                    Double value = new Double(quantity * price);
                    model.setValueAt(value, row, 3);
                }
            }
        }
    };
    table.getModel().addTableModelListener(tableModelListener);
}



public static void main(String[] args) {
    SwingUtilities.invokeLater(new Runnable() {

        @Override
        public void run() {
            TableProcessing frame = new TableProcessing();
            frame.setDefaultCloseOperation(EXIT_ON_CLOSE);
            frame.pack();
            frame.setLocationRelativeTo(null);
            frame.setVisible(true);
        }
    });
}