How to remove a row from JTable

Question

I want to remove some rows from a JTable  How can I do it

User · Answer

In order to remove a row from a JTable  you need to remove the target row from the underlying TableModel  If  for instance  your TableModel is an instance of DefaultTableModel  you can remove a row by doing the following     DefaultTableModel myJTable getModel    removeRow rowToRemove

User · Answer

A JTable normally forms the View part of an MVC implementation  You ll want to remove rows from your model  The JTable  which should be listening for these changes  will update to reflect this removal  Hence you won t find removeRow   or similar as a method on JTable

User · Answer

The correct way to apply a filter to a JTable is through the RowFilter interface added to a TableRowSorter  Using this interface  the view of a model can be changed without changing the underlying model  This strategy preserves the Model-View-Controller paradigm  whereas removing the rows you wish hidden from the model itself breaks the paradigm by confusing your separation of concerns

User · Answer

If you need a simple working solution  try using DefaultTableModel   If you have created your own table model  that extends AbstractTableModel  then you should also implement removeRow   method  The exact implementation depends on the underlying structure  that you have used to store data   For example  if you have used Vector  then it may be something like this   public class SimpleTableModel extends AbstractTableModel       private Vector lt String gt  columnNames   new Vector lt String gt            Each value in the vector is a row  String   - row data      private Vector lt String   gt  data   new Vector lt String   gt                   public String getValueAt int row  int col            return data get row  col                       public void removeRow int row            data removeElementAt row             If you have used List  then it would be very much alike      Each item in the list is a row  String   - row data  List lt String   gt  arr   new ArrayList lt String   gt      public void removeRow int row        data remove row       HashMap     Integer - row number  String   - row data  HashMap lt Integer  String   gt  data   new HashMap lt Integer  String   gt      public void removeRow Integer row        data remove row       And if you are using arrays like this one  String     data        a    b        c    d         then you re out of luck  because there is no way to dynamically remove elements from arrays  You may try to use arrays by storing separately some flags notifying which rows are deleted and which are not  or by some other devious way  but I would advise against it    That would introduce unnecessary complexity  and would in fact just be solving a problem by creating another  That s a sure-fire way to end up here  Try one of the above ways to store your table data instead   For better understanding of how this works  and what to do to make your own model work properly  I strongly advise you to refer to Java Tutorial  DefaultTableModel API and it s source code

User · Answer

mmm is very simple guys  for  int i   model getRowCount   - 1  i  gt   0  i--         model removeRow i

User · Answer

Look at the DefaultTableModel for a simple model that you can use   http   java sun com javase 6 docs api javax swing table DefaultTableModel html  This extends the AbstractTableModel  but should be sufficient for basic purposes   You can always extend AbstractTableModel and create your own   Make sure you set it on the JTable as well   http   java sun com javase 6 docs api javax swing table AbstractTableModel html  Look at the basic Sun tutorial for more information on using the JTable with the table model   http   java sun com docs books tutorial uiswing components table html data

[java] How to remove a row from JTable?

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