Swing Tischansicht in Netbeans

Question

Ich benutze Swings in Netbeans. Ich habe die Schaltfläche "view" erstellt, wenn ich auf die Schaltfläche "view" klicke, um die Datenbanktabelle abzurufen und die Tabelle unter der Schaltfläche "view" auf derselben Seite anzuzeigen.

Mein Code:

private void viewActionPerformed(java.awt.event.ActionEvent evt) {          
    showData(); }          


public void showData() 
    { 
     Connection con=null; 
     Statement st=null; 
     ResultSet rs=null; 
     String s; 
     try 
     { 
      con=DriverManager.getConnection("jdbc:mysql://localhost/testm","root","root"); 
      st=con.createStatement(); 
      s="select * from smpl"; 
      rs=st.executeQuery(s); 


     ResultSetMetaData rsmt= rs.getMetaData(); 
     int c=rsmt.getColumnCount(); 
     Vector column=new Vector(c); 
     for(int i=1;i<=c;i++) 
     { 

     column.add(rsmt.getColumnName(i)); 
     } 
     Vector data= new Vector(); 
     Vector row= new Vector(); 
     while(rs.next()) 
     { 
     row=new Vector(c); 
     for(int i=1;i<=c;i++) 
     { 
      row.add(rs.getString(i)); 
     } 
     data.add(row); 
     } 

    JFrame smp=new JFrame(); 
    smp.setSize(1000,500); 
    // smp.setLocation(0, 300); 
    //smp.setUndecorated(true); 
     smp.setLocationRelativeTo(null); 
     smp.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
     JPanel panel=new JPanel(); 
     // paneldes.setLocation(20, 100); 
     JTable table= new JTable(data,column); 
     JScrollPane jsp= new JScrollPane(table); 

     panel.setLayout(new BorderLayout()); 
     //paneldes.setLocation(100, 200); 
     panel.add(jsp,BorderLayout.CENTER);  
     // paneldes.add(jsp); 
     // jsp.setLocation(100, 200); 
     this.setContentPane(panel); 
     this.setVisible(true); 
     SwingUtilities.getAncestorOfClass(null, jsp); 
    } 

     catch(Exception e) 
       {JOptionPane.showMessageDialog(null,"ERROR"); 
       }finally{ 
         try{ 
         st.close(); 
         rs.close(); 
         con.close(); 
         }catch(Exception e){ 
         JOptionPane.showMessageDialog(null,"ERROR CLOSE"); 

       }}} 
public static void main(String args[]) { 
java.awt.EventQueue.invokeLater(new Runnable() { 
      public void run() { 
       new smplvi().setVisible(true); 
      } 
     }); 
    } 

Dank im Voraus

Answer 1

Versuchen Sie es so tun, nicht mit einem Vektor

 DefaultTableModel model = (DefaultTableModel) jTable1.getModel(); 
    String data1 = something1.columnOneFromDB; 
    String data2 = something2.columnTwoFromDB; 
    String data3 = something3.columnThreeFromDB(); 
    String data4 = something4.columnFourFromDB(); 

    Object[] row = { data1, data2, data3, data4 }; 

    model.addRow(row);