JTable运行时间计算？

Question

这是我的团队项目部分。当我输入客户ID并按OK时，客户详细信息以表格格式显示。该表包含以下列：星期日，费率，星期六， 费率，其他，费率类似。

我的问题是我想输入整数，计算它，然后将其存储在数据库中。在表中运行时间我想输入数字，计算并需要存储在数据库中。该怎么办？提前致谢。

import java.awt.BorderLayout; 
import java.awt.EventQueue; 
import java.awt.event.ActionEvent; 
import java.awt.event.ActionListener; 
import java.sql.*; 
import javax.swing.*; 
import javax.swing.event.CellEditorListener; 
import javax.swing.event.ChangeEvent; 
import javax.swing.table.DefaultTableModel; 
public class TestTable 
{ 
public static void main(String[] args) 
{ 
    TestTable testTable = new TestTable(); 
} 
public TestTable() 
{ 
    EventQueue.invokeLater(new Runnable() 
    { 
     @Override 
     public void run() 
     { 
      try 
      { 
       UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName()); 
      } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) { 
      } 
      JFrame frame = new JFrame("Testing"); 
      frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
      frame.setLayout(new BorderLayout()); 
      frame.add(new TestTable.Bill()); 
      frame.pack(); 
      frame.setLocationRelativeTo(null); 
      frame.setVisible(true); 
     } 
    }); 
}  
public class Bill extends JPanel implements ActionListener ,CellEditorListener 
{ 
    JTextField textFieldId; 
    JLabel l1; 
    JLabel l2; 
    JButton b1,b2,b3; 
    JTextField sun,sunr,sat,satr,oth,othr; 
    float sum1,totall; 
    ResultSet rs1 = null; 
    DefaultTableModel model = new DefaultTableModel();  
    private int rows; 
    Double value; 
    public Bill() 
    { 
     setLayout(new BorderLayout());    
     JPanel fields = new JPanel(); 
     textFieldId = new JTextField(10); 
     l1 = new JLabel("New Customer Entry :-"); 
     l2 = new JLabel("Customer Id"); 
     b1 = new JButton("OK"); 
     b2 = new JButton("Calculate"); 
     b3 = new JButton("Print"); 
     fields.add(l2); 
     fields.add(textFieldId); 
     fields.add(b1); 
     fields.add(b2); 
     fields.add(b3); 
     add(fields, BorderLayout.NORTH); 
     b1.addActionListener(this); 
     b2.addActionListener(this); 
     b3.addActionListener(this); 
     // Don't forget to add a table. 
     add(new JScrollPane(new JTable(model))); 
    } 
    @Override 
    public void actionPerformed(ActionEvent e) 
    { 
     System.out.println("You clicked the button"); 
     Connection con; 
     if (e.getSource() == b1) 
     { 
      PreparedStatement ps = null; 
      Statement stmt = null; 
      try 
      { 

       Class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); 
       con = DriverManager.getConnection("jdbc:odbc:devendra"); 
       ps = con.prepareStatement("SELECT * FROM Customer where Customer_Id = ?"); 
       // You must bind the parameter with a value... 
       ps.setString(1, textFieldId.getText()); 
       rs1 = ps.executeQuery(); 
       model.addColumn("Customer_Id"); 
       model.addColumn("Customer_Name"); 
       model.addColumn("Contact"); 
       model.addColumn("Paper_Name"); 
       model.addColumn("Sunday"); 
       model.addColumn("Rate"); 
       model.addColumn("Satarday"); 
       model.addColumn("Rate"); 
       model.addColumn("Other Day"); 
       model.addColumn("Rate"); 
       model.addColumn("Price"); 
       model.setRowCount(0); 
       while (rs1.next()) 
       {       
         model.addRow(new Object[]{rs1.getString(1),rs1.getString(2),rs1.getString(3),rs1.getString(4),rs1.getString(5), 
          rs1.getString(6),rs1.getString(7),rs1.getString(8),rs1.getString(9),rs1.getString(10)}); 
       } 
      // Vector data = model.getDataVector(); 

       JOptionPane.showMessageDialog(null, "You successfully Enter the Entry"); 
      } 
      catch (SQLException s) 
      { 
       System.out.println("SQL code does not execute."); 
       JOptionPane.showMessageDialog(null, "Please Enter the Detail Correctly"); 
      } catch (Exception exp) 
      { 
       JOptionPane.showMessageDialog(this, "Failed to perform query: " + exp.getMessage()); 
      } finally 
      { 
       try { 
        ps.close(); 
       } 
       catch (Exception ex) 
       { 
       } 
      }     
     } 
     if (e.getSource() == b2)  
     { 
      int rowCount = model.getRowCount(); 


      for(int i =1; i<rowCount;i++) 
      { 
       Double valuea = (Double) model.getValueAt(i, 5); 
       Double valueb = (Double) model.getValueAt(i, 6); 
       Double valuec = (Double) model.getValueAt(i, 7); 
       Double valued = (Double) model.getValueAt(i, 8); 
       Double valuee = (Double) model.getValueAt(i, 9); 
       Double valuef = (Double) model.getValueAt(i, 10); 
        double value; 
        value = Double.parseDouble(String.valueOf(valuea)) * Double.parseDouble(String.valueOf(valueb)); 
        model.setValueAt(value, i, 10); 
      } 

    } 

}

@Override 
    public void editingStopped(ChangeEvent e) { 
     throw new UnsupportedOperationException("Not supported yet."); 
    } 

    @Override 
    public void editingCanceled(ChangeEvent e) { 
     throw new UnsupportedOperationException("Not supported yet."); 
    } 



} 

}

Answer 1

我怎么没看到你的INSERT可以成功：括号不均衡，以及setValueAt() -were其文本实际调用，回报void;检查日志。您似乎插入了单个属性，而Customer关系的值为11.如果您的意思是UPDATE的Total属性，请注意您的架构违反了normal form，因为Total取决于其他属性的子集。咨询你的小组关于纠正模式。将sum1的公式重新分解为一个方法，只要显示Total，就可以重复使用该方法。

Answer 2

我不认为你的代码是正确的。它如何添加行或列。我认为当您完成将所有内容添加到表模型时，需要提供table model，并且还会创建一个新的function来计算总和。还要在构造函数中添加列，即只添加一次。咨询你的小组。