Java JTable RowSorter исключает исключение

Question

Мне действительно нужна ваша помощь ... Я уже отчаялся, потому что обновление JTable не работает должным образом.

У меня есть JTable, который получает свои данные из базы данных через mySQl. Я храню данные в массиве и передаю его в таблицуModel. После пожара «fireTableDatachanged» я вижу все данные. Это также работает при удалении строки: Я просто удаляю запись в своей базе данных и считываю новые данные из БД.

Итак, вот что странно: иногда это работает, а иногда нет ... Я также использую RowSorter, и это может быть актуальной проблемой.

Я очень благодарен за вашу помощь и благодарю заранее!

Это код для удаления и освежающим таблицы данных:

  ////////////////////////////////////////////////////////////// 
     // delete entry ButtonListener 
     ////////////////////////////////////////////////////////////// 
    loeschen.addActionListener(new ActionListener() { 
     @Override 
     public void actionPerformed(ActionEvent arg0) { 
       // get database object 
      Datenbank db = new Datenbank(); 

       // get selected row 
      int row = table.getSelectedRow(); 
      int col = 0; 
      if (row != -1) { 
       row = table.convertRowIndexToModel(row); 
       Object entryname = model.getValueAt(row, col); 



        db.connect(); 
        db.deleteEntry("reb", "belegnummer", entryname.toString()); 
        db.close(); 

// delete documents from ftp server as well.... 
// ...... 

        refreshTable(); 

     } 
    }); 

} 

///////////////////////////////////////////////////////////////// 
// refresh table 
// ////////////////////////////////////////////////////////////// 
public static void refreshTable() { 
    String query = "SELECT * FROM reb where projectname like '" + year 
      + "%' order by projectname"; 
    Datenbank db = new Datenbank(); 

    db.connect(); 
    data = db.getBills(query); 
    db.close(); 

    model = new DefaultTableModel(data, tableHeader) { 
     @Override 
     public boolean isCellEditable(int row, int column) { 
      return false; 
     } 

    }; 

    table.setModel(model); 
    model.fireTableDataChanged(); 
    table.setRowSorter(sorter); 
    sorter.setModel(model);; 
} 

это метод, когда первый создал JTable

public void getBills() { 
    String query = "SELECT * FROM reb where projektname like '" + year 
      + "%' order by projektname"; 
    Datenbank db = new Datenbank(); 

    db.connect(); 
    data = db.getBills(query); 
    db.close(); 

    model = new DefaultTableModel(data, tableHeader) { 
     @Override 
     public boolean isCellEditable(int row, int column) { 
      return false; 
     } 
    }; 

    table = new JTable(model); 
    sorter = new TableRowSorter<TableModel>(model); 
    table.setRowSorter(sorter); 
} 

здесь исключение

Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: -1 
at javax.swing.DefaultRowSorter.convertRowIndexToModel(Unknown Source) 
at javax.swing.JTable.convertRowIndexToModel(Unknown Source) 
at buchungen.Overview$3.valueChanged(Overview.java:230) 
at javax.swing.DefaultListSelectionModel.fireValueChanged(Unknown Source) 
at javax.swing.DefaultListSelectionModel.fireValueChanged(Unknown Source) 
at javax.swing.DefaultListSelectionModel.fireValueChanged(Unknown Source) 
at javax.swing.DefaultListSelectionModel.changeSelection(Unknown Source) 
at javax.swing.DefaultListSelectionModel.changeSelection(Unknown Source) 
at javax.swing.DefaultListSelectionModel.removeSelectionIntervalImpl(Unknown Source) 
at javax.swing.DefaultListSelectionModel.clearSelection(Unknown Source) 
at javax.swing.JTable.clearSelection(Unknown Source) 
at javax.swing.JTable.clearSelectionAndLeadAnchor(Unknown Source) 
at javax.swing.JTable.tableChanged(Unknown Source) 
at javax.swing.JTable.setModel(Unknown Source) 
at buchungen.Overview.refreshTable(Overview.java:501) 
at buchungen.Overview$4.actionPerformed(Overview.java:456) 
at javax.swing.AbstractButton.fireActionPerformed(Unknown Source) 
at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source) 
at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source) 
at javax.swing.DefaultButtonModel.setPressed(Unknown Source) 
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source) 
at java.awt.Component.processMouseEvent(Unknown Source) 
at javax.swing.JComponent.processMouseEvent(Unknown Source) 
at java.awt.Component.processEvent(Unknown Source) 
at java.awt.Container.processEvent(Unknown Source) 
at java.awt.Component.dispatchEventImpl(Unknown Source) 
at java.awt.Container.dispatchEventImpl(Unknown Source) 
at java.awt.Component.dispatchEvent(Unknown Source) 
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source) 
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source) 
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source) 
at java.awt.Container.dispatchEventImpl(Unknown Source) 
at java.awt.Window.dispatchEventImpl(Unknown Source) 
at java.awt.Component.dispatchEvent(Unknown Source) 
at java.awt.EventQueue.dispatchEventImpl(Unknown Source) 
at java.awt.EventQueue.access$200(Unknown Source) 
at java.awt.EventQueue$3.run(Unknown Source) 
at java.awt.EventQueue$3.run(Unknown Source) 
at java.security.AccessController.doPrivileged(Native Method) 
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source) 
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source) 
at java.awt.EventQueue$4.run(Unknown Source) 
at java.awt.EventQueue$4.run(Unknown Source) 
at java.security.AccessController.doPrivileged(Native Method) 
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source) 
at java.awt.EventQueue.dispatchEvent(Unknown Source) 
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source) 
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source) 
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source) 
at java.awt.EventDispatchThread.pumpEvents(Unknown Source) 
at java.awt.EventDispatchThread.pumpEvents(Unknown Source) 
at java.awt.EventDispatchThread.run(Unknown Source) 

Answer 1

для я его рабочий штраф ... Я использую вектор для хранения данных ..

удалите строку, row = table.convertRowIndexToModel (строка);

не использует метод setmodel ,, табличная модель общественного класс STOCKmodel расширяет DefaultTableModel {

String ColumnName[] = {"Item Code" ,"Item Name" ,"Uom","Unit_Price" ,"Opening_quantity " ,"Current_Received_quantity" ,"Current_Issued_Quantity", "Closing_Stock", "Closing_Value" ,"Minimum"}; 
String ColumnType[] = {"A"   ,"B"   ,"T" ,"C" ,"D" ,"E"     , "F"    ,  "G"   , "R" ,"s"  }; 
int  iColumnWidth[] = {120   , 200   ,140 ,200 ,70 ,200     , 70    ,  70   , 200  ,200  }; 
DecimalFormat df; 
public STOCKmodel() 
{ 
     setDataVector(getRowData(),ColumnName); 
} 

public Class getColumnClass(int iCol) 
{ 
     return getValueAt(0,iCol).getClass(); 
} 
public Object getValueAt(int row, int column) 
     { 
    //================== 
    df = new DecimalFormat("#.##"); 
//Closing_value column_N0 7 
//Closing_Stock column_No 6 
//Unit_Price column_No 2 
//===================== 


//======================= 


if (column == 3) 
{ 
//String h = getValueAt(row,5).toString(); 
//String j =getValueAt(row, 6).toString(); 
double i,d,t; 
try{ 

String h = getValueAt(row,8).toString(); 
String j =getValueAt(row, 7).toString(); 
// String l =getValueAt(row, 7).toString(); 


i = Double.parseDouble(h); 
d = Double.parseDouble(j); 
if (d==0) 
d=1; 
//t = Double.parseDouble(l); 
} 

    catch(NumberFormatException e) 
{ 
    i=0; 
    d=0; 
    t=0; 
} 


//================================================ 
//double sub =i*d; 


//val = df.format(val); 
String tot ; 
//String.valueOf(int); 
try{ 
    //if(val==0) 
    //tot =null; 
     double val = i/d; 
     tot = Double.toString(val); 
     tot = df.format(val); 
     if(val==0) 
     tot ="nil"; 
    //tot =String.valueOf(sub); 
} 
catch (ArithmeticException ae) { 
     tot ="nil"; 
} 
catch(NumberFormatException e) 
{ 
tot ="nil"; 
} 
//================================================ 

return tot; 
} 




      return super.getValueAt(row, column); 
     } 



public boolean isCellEditable(int iRow,int iCol) 
{ 

     return false; 
} 

public boolean isCellEdit(int iRow,int iCol) 
{ 

     return true; 
} 

private Object[][] getRowData() 
{ 
     Object RowData[][] = new Object[1][ColumnName.length]; 

     for(int i=0;i<ColumnName.length;i++) 
      RowData[0][i] = ""; 
     return RowData; 
} 
public void appendRow(Vector theVect) 
{ 
     insertRow(getRows(),theVect); 
} 

public int getRows() 
{ 
     return super.dataVector.size(); 
} 
public void appendEmptyRow() 
{ 
     Vector<Object> curVector = new Vector<Object>(); 
     for(int i=0;i<ColumnName.length;i++) { 
       curVector.addElement(" "); 
     } 
     insertRow(getRows(),curVector); 
} 

}