Makignone column in jtable NOT sortable

hi
i am using a TAbleSorter that sun provides to sort my table
JTable importsTable=new JTable();
MyTableModel model = new MyTableModel(handler.getImportableObjects());
MyTableSorter sorter = new MyTableSorter(model, 0);
sorter.setTableHeader(importsTable.getTableHeader());
importsTable.setModel(sorter);
MyTableModel is an AbstractTableModel that does soem custom stuff for me, nothign major.
MyTableSorter is a table sorter that overrides isCellEditable. i am doing this so that i can make the one column iwnat non-sortable not editable. it is however nto working. help?
thank you

Well.. u r using an abstractTableModel.. so the cells r anyways not editable.. U ve made all the columns except the first one editable by overriding the isCellEditable method.. It s not working?? There must be some other prob.. Post some more relevant part of the code wit tags

Similar Messages

Hiding a column in jtable made from DefaultTableModel.

I have made my jtable from DefaultTableModel.
I want to keep one column in the jtable as hidden storing some data containing neccessary information like the "path of the file"
which need not be shown to the user.
Please tell me how I can hide one column in the Jtable.
please provide siome link or code for the same.
Tia,
Sarwa

dayanandabv wrote:
[http://search.sun.com/search/onesearch/index.jsp?qt=hide+column%2B+JTable&rfsubcat=&col=developer-forums]
My thought exactly.
db

Add and remove columns from JTable

Help me please!
A try to remove column from JTable. It's removed, but when I try to add column in table, then I get all old (removed early) columns + new column....
I completely confused with it.....
Here is my code for remove column:
class DelC implements ActionListener
          public void actionPerformed (ActionEvent e )
               int [] HowManyColDelete = table.getSelectedColumns();
               if (HowManyColDelete.length !=0)
                    TableColumnModel tableCModel = table.getColumnModel();
                    for (int i = HowManyColDelete.length-1; i>-1; i--)
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               else
                      JOptionPane.showMessageDialog(JOptionPane.getRootFrame(), "Column is not selected!");
     }

It's little ex for me, I just try understand clearly how it's work (table models i mean). Here is code. All action with tables take place through menu items.
My brain is boiled, I've try a lot of variants of code, but did't get right result :((
It's code represent problem, which I've describe above. If you'll try remove column and then add it again, it will be ma-a-a-any colunms...
I understand, that my code just hide columns, not delete from table model....
But now I have not any decision of my problem...
Thanks a lot for any help. :)
import javax.swing.*;
import java.awt.*;
import javax.swing.table.*;
import java.awt.event.*;
import javax.swing.table.DefaultTableModel;
class JTableF extends JFrame
     Object [] [] data = new Object [0] [2];
     JTable table;
     DefaultTableModel model;
     String [] columnNames = {"1", "2"};
     TableColumnModel cm;
     JTableF()
          super("Table features");
          setDefaultLookAndFeelDecorated( true );
          setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);
          JMenuBar MBar = new JMenuBar();
          JMenu [] menus = {new JMenu("A"), new JMenu("B")};
          JMenuItem [] menu1 = {new JMenuItem("Add row"), new JMenuItem("Delete row", 'D'), new JMenuItem("Add column"), new JMenuItem("Delete column")};
          menu1 [ 0 ].addActionListener(new AddL());
          menu1 [ 1 ].addActionListener(new DelL());
          menu1 [ 2 ].addActionListener(new AddC());
          menu1 [ 3 ].addActionListener(new DelC());
          for (int i=0; i<menu1.length; i++)
               menus [ 0 ].add( menu1 [ i ]);
          for (int i=0; i<menus.length; i++)
               MBar.add(menus );
          JPanel panel = new JPanel ();
          model = new DefaultTableModel( data, columnNames );
          table = new JTable (model);
          cm = table.getColumnModel();
          panel.add (new JScrollPane(table));
          JButton b = new JButton ("Add row button");
          b.addActionListener(new AddL());
          panel.add (b);
          setJMenuBar (MBar);
          getContentPane().add(panel);
          pack();
          setLocationRelativeTo (null);
          setVisible (true);
     class DelC implements ActionListener
          public void actionPerformed (ActionEvent e )
               int [] HowManyColDelete = table.getSelectedColumns();
               if (HowManyColDelete.length !=0)
                    TableColumnModel tableCModel = table.getColumnModel();
                    for (int i = HowManyColDelete.length-1; i>-1; i--)
                         int vizibleCol = table.convertColumnIndexToView(HowManyColDelete [ i ]);
                         tableCModel.removeColumn (tableCModel.getColumn (vizibleCol));
                    //cm = tableCModel;
               else
                    JOptionPane.showMessageDialog(JOptionPane.getRootFrame(), "Column is not selected!");
     class AddC implements ActionListener
          public void actionPerformed (ActionEvent e)
               //table.setColumnModel(cm);
               Object NewColumnName = new String();
               NewColumnName = JOptionPane.showInputDialog ("Input new column name", "Here");
               int i = model.getRowCount();
               int j = model.getColumnCount();
               Object [] newData = new Object [ i ];
               model.addColumn ( NewColumnName, newData);
     class AddL implements ActionListener
          public void actionPerformed (ActionEvent e)
               int i = model.getColumnCount();
               Object [] Row = new Object [ i ];
               model.addRow ( Row );
     class DelL implements ActionListener
          public void actionPerformed (ActionEvent e)
               int [] HowManyRowsDelete = table.getSelectedRows();
               if (HowManyRowsDelete.length !=0)
                    for (int k = HowManyRowsDelete.length-1; k>-1; k--)
                         model.removeRow (HowManyRowsDelete[k]);
               else
                    JOptionPane.showMessageDialog(JOptionPane.getRootFrame(), "Row is not selected!");
     public static void main (String [] args)
          javax.swing.SwingUtilities.invokeLater(new Runnable()
               public void run()
                    JTableF inst = new JTableF();

How to set special rows in jtable not selectable

Hello programmers,
anybody knows how to set special rows(p.E. row 0) in jtable not selectable.
in advance thanks for your answers

table = new JTable(...)
     public void changeSelection(int row, int column, boolean toggle, boolean extend)
          if (row == 0)
               return;
          else
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};

Set Background color of columns in JTable

Hi,
I would like to set the background color of columns, which are not editable, to a grey color.
I have a JTable with 8 columns where the first is not editable (set through a TableModel.
Regards
Thomas

one can use a most efficient method of changing looks of table data by overidding prepareRenderer() method of JTable. this method returns a component which JTable uses to display a cell. a solution could be
public class mytable extends JTable
   public component prepareRenderer(.......)
        component c = super.prepareRenderer(....);
         if ( not_my_column )
            return c;
        c.setBackground(Color.grey);
        return c;
}

Editable Columns in JTable

I have a JTable that I want the cells in the first two columns to be NOT EDITABLE and the third column cells EDITABLE. How can this be accomplished?
Thanks
Doopsterus

public boolean isCellEditable(int row, int column)
int modelColumn = convertColumnIndexToModel( column );
return (modelColumn > 1);
}

How can i make custom column added to inbox sortable

I had a requirement to add custom column to workflow inbox, i was able to achieve this without much difficulty.
But i have noticed this custom column is not sortable, against the OOTB columns.
Not sure what i am missing, Thanks in Advance
in the json, i dont see any different between OOTB column values and custom column values
startTime: 1359678539512,
lifestage: "Approve",
duedate: 1368769500000,
Environment CQ 5.5

Hi efish,
I followed steps specified at below post. The column is sortable.
http://forums.adobe.com/message/5032804#5032804
Thanks,
Sham

Show/hide a column in JTable

I want to show/hide columns in JTable
How is this possible
Note that columns that are hidden may be showed later
thanks in advance
Renjith

I tried out for this:TableColumn col = jTable.getColumnModel().getColumn( colnum );
if( col != null )
col.setPreferredWidth( 0 );
col.setMaxWidth( 0 );
}But the column seems to have minimum width which you can't even change with col.setMinWidth( 0 );

Hide a column in JTable

Dear all,
I want to hide a column in JTable object, I already tried resize it to 0 but the effect is not good, I also cannot remove the column, since I need this column for other process.
So, any other good idea besides resizes and remove?
Thank you very much!

I have tried that too, but the column isn't hide, the size is not actually come to 0,...That's because JTable has a default minimum width of 15.... if you want to hide the column, you must set the minwidth as well. For example:
myTable.getColumnModel().getColumn(column_to_hide).setMinWidth(0);
myTable.getColumnModel().getColumn(column_to_hide).setPreferredWidth(0);;o)
V.V.

Scroll Fix Column in JTable

I have see a lots of examples of whow to create fix column into JTable.
But all the examples have the same problems.
When I wont to scroll over the fix column the vertical scroll bar of the no fix column dont move, so the no fix column dose not move and the fix columns and no fix columns aren?t alined.
If sameone have same example, send it please !!!!
Thanks !!!
Pablo

In a recent project I've had the same problem.
After a long research at the Swing forum at java.sun.org and google I found out that
1. Currently there is no proper Open Source solution
2. All the postings at sun are good concepts, but far away from solutions
3. The only (for me )acceptable commercial solution is the JCTable from Quest (formerly KGroup)
Since I want to have full control over the source code of the table, I decided to collect all the tips from this forums and write my own table.
Here is a first try:
http://jroller.com/resources/kriede/CoolTable.java
The main idea is to have two tables, one for the locked columns (= fixed columns = frozen columns) and one for the scrollable columns. With all the tips from this forum it was more or less a puzzle to make it work pretty.

Requisition number not sortable in sourcing

Hi,
We are on SRM 7.1 ECS(upgraded from SRM 5)
The issue we are facing is that the column "REQUISITION/ITEM NO" is not sortable in Sourcing Cockkpit.All other columns are sortable in sourcing transaction.
In our current production system SRM 5,we have all columns(except quanity) as sortable columns and would like to have the same feature in the sourcing transaction in the new version as well.
Is there any way we can change any code for the sourcing transaction to achieve this?

Hi,
Currently working on SRM 5.0 .In previous project i have worked on SRM 7.0.
If SAP has removed this functionality there will be a reason.
Normally for Requistion there is no need of sorting .By default it will be in Ascending order
you can check the shopping cart no easily either in Ascending from Top or Descending from bottom where
for other columns it may require sorting like vendor ,qty etc that is why they have not taken.
SAP has changed in SRM 7.0 based on the input from different clients
Please convenience the client stating it is a Std Functionality (or) why do require sorting in Requistion no
Regards
G.GaneshKumar

How can i make hidden column in JTable

hi, how can i make hidden column in JTable,
basically i have a ID field in JTable, i have to use this ID , but i also dont want to show this ID in JTable.
any idea how ??

staiji its not working
i did this :
first :
TableColumnModel columnModel =
usersTable.getColumnModel();TableColumn column =
columnModel.getColumn(1);
usersTable.removeColumn(column);
then when i trying to get this :
Integer userId =
(Integer)usersTable.getValueAt(UserBrowser.this.usersTa
le.getSelectedRow(), 0);
it not give me ID column's value .
i have a column in JTable like :
ID | Username | First name | Last name
i want to hide ID column , but get this ID's value
when user clicks on JTable row.Hi, if you would read the documentation about JTable.getValueAt(...) you will find, that there is a significant difference between this method and the datamodels getValueAt(...) method. JTables getValueAt(...) method interprets column-index as index in its TableColumnModel - in your TableColumnModel there is no column any longer that holds ID values, therefore you were not able to get it by JTable.getValueAt(...). Do not use these methods for the purpose you want it for - you will also get the wrong values, if the user has repositioned columns - the column index is always interpreted as index in the currently used TableColumnModel and IS NOT A MODELINDEX.
greetings Marsian

Column Heading are not displayed in ALV Report using CL_SALV_DISPLAY?

Hi,
   I am using CL_SALV_DISPLAY class to display data. I Created an Internal Table Dynamically based fieldcatalog which was prepared based data at run time. When i displayed data using CL_SALC_DISPALY data is display in output but column headings are not displayed.
can anyone suggest me how to display heading in ALV using CL_SALV_DISPLAY class, My code is
      CLASS lcl_report DEFINITION
CLASS lcl_report DEFINITION.
PUBLIC SECTION.
    METHODS:
      display IMPORTING l_table TYPE string
                         l_fcat   TYPE string.
ENDCLASS.                    "lcl_report DEFINITION
      CLASS lcl_report IMPLEMENTATION
CLASS lcl_report IMPLEMENTATION.
METHOD display.
    DATA: gr_table   TYPE REF TO cl_salv_table.
    DATA: gr_columns TYPE REF TO cl_salv_columns_table,
          gr_column TYPE REF TO cl_salv_column_table,
          ls_fcat    TYPE slis_fieldcat_alv.
    DATA: gr_display TYPE REF TO cl_salv_display_settings.
    DATA: l_o_functions TYPE REF TO cl_salv_functions_list,
          l_field    TYPE string.
    FIELD-SYMBOLS : <fs_table>    TYPE STANDARD TABLE,
                    <ft_fcat>     TYPE STANDARD TABLE.
Get the ALV object refering to the output table
    ASSIGN (l_table) TO <fs_table>.
    ASSIGN (l_fcat) TO <ft_fcat>.
    TRY.
        cl_salv_table=>factory(
          IMPORTING
            r_salv_table = gr_table
          CHANGING
            t_table      = <fs_table> ).
      CATCH cx_salv_msg.                                "#EC NO_HANDLER
    ENDTRY.
Add basic default functionality in the ALV report
Functions
    l_o_functions = gr_table->get_functions( ).
    l_o_functions->set_all( abap_true ).
    gr_columns = gr_table->get_columns( ).
    gr_columns->set_headers_visible( abap_true ).
Display the list
    gr_table->display( ).
ENDMETHOD.                    "extract
ENDCLASS.                    "lcl_report IMPLEMENTATION
*& start-of-selection declaration
START-OF-SELECTION.
PERFORM :
get store codes
    get_storecodes    USING      p_stfile
                      CHANGING   it_t001w,
fetching mard data
    read_mard_data,
preparing fieldcatalog for Final Data
    create_filedcat   USING      it_t001w
                                 it_site
                      CHANGING   it_fieldcat,
preparing structure & internal table for Final Data
    create_final_table_structure USING it_fieldcat,
prepare output data
    prepare_final_data.
*& end-of-selection declaration
END-OF-SELECTION.
PERFORM :
display data
    display_data    USING l_table
                          l_fcat.
*&      Form get_storecodes
FORM get_storecodes USING    p_p_stfile
                     CHANGING p_it_t001w LIKE it_t001w[].
DATA :
internal table for RAW
lt_raw    TYPE truxs_t_text_data,
rs_site   LIKE LINE OF rt_site,
l_index   LIKE sy-tabix.
FIELD-SYMBOLS :
field symbol for it_t001w
<fs_t001w>   LIKE LINE OF p_it_t001w.
calling function module to get Stores Data from File
CALL FUNCTION 'TEXT_CONVERT_XLS_TO_SAP'
    EXPORTING
      i_line_header        = 'X'
      i_tab_raw_data       = lt_raw
      i_filename           = p_p_stfile
    TABLES
      i_tab_converted_data = p_it_t001w[]
    EXCEPTIONS
      conversion_failed    = 1
      OTHERS               = 2.
IF sy-subrc <> 0.
    EXIT.
ENDIF.
SORT p_it_t001w BY werks.
CLEAR rs_site.
rs_site-sign   = 'I'.
rs_site-option = 'EQ'.
rs_site-low    = p_dccode.
APPEND rs_site TO rt_site.
IF it_t001w[] IS NOT INITIAL.
    LOOP AT p_it_t001w ASSIGNING <fs_t001w>.
      l_index   = sy-tabix.
      CALL FUNCTION 'CONVERSION_EXIT_ALPHA_INPUT'
        EXPORTING
          input = <fs_t001w>-werks
        IMPORTING
          output = <fs_t001w>-werks.
      MODIFY p_it_t001w FROM <fs_t001w> INDEX l_index.
      IF <fs_t001w>-werks GE s_site-low AND <fs_t001w>-werks LE s_site-high.
      append site to ranges
        CLEAR rs_site.
        rs_site-sign   = 'I'.
        rs_site-option = 'EQ'.
        rs_site-low    = <fs_t001w>-werks.
        APPEND rs_site TO rt_site.
        CONTINUE.
      ENDIF.
    ENDLOOP.
    SORT p_it_t001w BY werks.
    SORT rt_site.
ENDIF.
ENDFORM.                    " get_storecodes
*&      Form create_final_table_structure
FORM create_filedcat   USING    p_it_t001w      LIKE it_t001w[]
                                p_it_site       LIKE it_site[]
                       CHANGING p_it_fieldcat   LIKE it_fieldcat[].
FIELD-SYMBOLS :
field symbol for p_it_t001w
<fs_t001w>     LIKE LINE OF p_it_t001w,
field symbol for p_it_site
<fs_site>      LIKE LINE OF p_it_site.
DATA :
fieldname
l_fieldname    TYPE slis_fieldname,
workarea for site ranges
rs_site        LIKE LINE OF rt_site.
CLEAR : l_fieldname, rs_site.
l_fieldname    = p_dccode.
PERFORM
prepare fieldcatalog
build_fieldcatalog USING :   'MTART'      'CHAR'        '5' ,
                               'MTBEZ'      'CHAR'        '25' ,
                               'MATKL'      'CHAR'        '6' ,
                               'WGBEZ'      'CHAR'        '20' ,
                               'MATNR'      'CHAR'        '18' ,
                               'MAKTX'      'CHAR'        '30' ,
                                l_fieldname 'CHAR'        '17' .
create header for excel
PERFORM create_excel_header USING : 'Division',
                                       'Divsion Description',
                                       'MC Code',
                                       'MC Description',
                                       'Article',
                                       'Article Description',
                                        l_fieldname.
loop for creating fieldcatalog
LOOP AT it_site ASSIGNING <fs_site>.
    READ TABLE it_t001w ASSIGNING <fs_t001w> WITH KEY werks = <fs_site>-werks
                                                              BINARY SEARCH.
    IF sy-subrc = 0           AND <fs_t001w> IS ASSIGNED AND
       <fs_site> IS ASSIGNED AND <fs_site>-stock GT 0.
      CLEAR : l_fieldname, rs_site.
      l_fieldname    = <fs_site>-werks.
    prepare fieldcatalog
      PERFORM build_fieldcatalog USING : l_fieldname    'CHAR'   '17'.
    create header for excel
      PERFORM create_excel_header USING l_fieldname .
      CONTINUE.
    ENDIF.
ENDLOOP.
l_fcat = 'it_fieldcat[]'.
ENDFORM.                    " create_final_table_structure
*&      Form build_fieldcatalog
FORM build_fieldcatalog USING    p_fieldname      TYPE slis_fieldname
                                  p_datatype       TYPE datatype_d
                                  p_length         TYPE intlen.
DATA : ls_fieldcat    LIKE LINE OF it_fieldcat.
CLEAR : ls_fieldcat.
ls_fieldcat-fieldname   = p_fieldname.
ls_fieldcat-datatype    = p_datatype.
ls_fieldcat-intlen      = p_length.
APPEND ls_fieldcat TO it_fieldcat.
ENDFORM.                    " build_fieldcatalog
*&      Form create_final_table_structure
FORM create_final_table_structure USING    p_it_fieldcat.
Create dynamic internal table and assign to FS
CALL METHOD cl_alv_table_create=>create_dynamic_table
    EXPORTING
      it_fieldcatalog = it_fieldcat
    IMPORTING
      ep_table        = t_table.
ASSIGN t_table->* TO <ft_final>.
ENDFORM.                    " create_final_table_structure
*&      Form create_excel_header
FORM create_excel_header USING    p_p_fieldname.
DATA : ls_header LIKE LINE OF it_header.
CLEAR ls_header.
ls_header-col_name = p_p_fieldname.
APPEND ls_header TO it_header.
ENDFORM.                    " create_excel_header
*&      Form prepare_final_data
FORM prepare_final_data .
DATA          : l_matnr       LIKE g_matnr,
                  l_werks       LIKE g_werks,
                  l_index       LIKE sy-tabix.
FIELD-SYMBOLS : <fs_mard>     LIKE LINE OF it_mard.
Getting No. of Lines in IT_MARD internal table
DESCRIBE TABLE it_mard LINES g_lines.
LOOP AT it_mard ASSIGNING <fs_mard>.
    l_index    = sy-tabix.
    IF l_matnr IS INITIAL.
      l_matnr = <fs_mard>-matnr.
      CLEAR : l_werks.
      l_werks    = <fs_mard>-werks.
      UNASSIGN : <fs_value>, <fs_final>.
    Create dynamic work area and assign to FS
      CREATE DATA t_line LIKE LINE OF <ft_final>.
      ASSIGN t_line->*   TO <fs_final>.
      ASSIGN COMPONENT 'MATNR' OF STRUCTURE <fs_final> TO <fs_value>.
      <fs_value>        = <fs_mard>-matnr.
      ASSIGN COMPONENT l_werks OF STRUCTURE <fs_final> TO <fs_value>.
      <fs_value>        = <fs_value> + <fs_mard>-labst.
    getting Article Type,MC & its Descriptions
      PERFORM get_other_data    USING     l_matnr
                                          l_werks.
    ELSEIF l_matnr <> <fs_mard>-matnr.
      APPEND <fs_final> TO <ft_final>.
      CLEAR l_matnr.
      l_matnr = <fs_mard>-matnr.
      CLEAR : l_werks.
      l_werks    = <fs_mard>-werks.
      UNASSIGN : <fs_value>, <fs_final>.
    Create dynamic work area and assign to FS
      CREATE DATA t_line LIKE LINE OF <ft_final>.
      ASSIGN t_line->*   TO <fs_final>.
      ASSIGN COMPONENT 'MATNR' OF STRUCTURE <fs_final> TO <fs_value>.
      <fs_value>        = <fs_mard>-matnr.
      ASSIGN COMPONENT l_werks OF STRUCTURE <fs_final> TO <fs_value>.
      <fs_value>        = <fs_value> + <fs_mard>-labst.
    getting Article Type,MC & its Descriptions
      PERFORM get_other_data    USING     l_matnr
                                         l_werks.
    ELSE.
      CLEAR : l_werks.
      l_werks    = <fs_mard>-werks.
      ASSIGN COMPONENT l_werks OF STRUCTURE <fs_final> TO <fs_value>.
      <fs_value>        = <fs_value> + <fs_mard>-labst.
    ENDIF.
    IF l_index = g_lines.
      APPEND <fs_final> TO <ft_final>.
    ENDIF.
ENDLOOP.
l_table = '<ft_final>[]'.
ENDFORM.                    " prepare_final_data
*&      Form get_other_data
FORM get_other_data USING    p_l_matnr
                              p_l_werks.
FIELD-SYMBOLS : <fs_mara>     LIKE LINE OF it_mara,
                  <fs_t023t>    LIKE LINE OF it_t023t,
                  <fs_t134t>    LIKE LINE OF it_t134t,
                  <fs_makt>     LIKE LINE OF it_makt.
READ TABLE it_mara ASSIGNING <fs_mara> WITH KEY matnr = p_l_matnr.   " BINARY SEARCH.
IF sy-subrc = 0 AND <fs_mara> IS ASSIGNED.
    ASSIGN COMPONENT 'MTART' OF STRUCTURE <fs_final> TO <fs_value>.
    <fs_value>        = <fs_mara>-mtart.
    ASSIGN COMPONENT 'MATKL' OF STRUCTURE <fs_final> TO <fs_value>.
    <fs_value>        = <fs_mara>-matkl.
    READ TABLE it_makt ASSIGNING <fs_makt> WITH KEY matnr = <fs_mara>-matnr   BINARY SEARCH.
    IF sy-subrc = 0 AND <fs_makt> IS ASSIGNED.
      ASSIGN COMPONENT 'MAKTX' OF STRUCTURE <fs_final> TO <fs_value>.
      <fs_value>        = <fs_makt>-maktx.
    ENDIF.
    READ TABLE it_t023t ASSIGNING <fs_t023t> WITH KEY matkl = <fs_mara>-matkl BINARY SEARCH.
    IF sy-subrc = 0 AND <fs_t023t> IS ASSIGNED.
      ASSIGN COMPONENT 'WGBEZ' OF STRUCTURE <fs_final> TO <fs_value>.
      <fs_value>      = <fs_t023t>-wgbez.
    ENDIF.
    READ TABLE it_t134t ASSIGNING <fs_t134t> WITH KEY mtart = <fs_mara>-mtart BINARY SEARCH.
    IF sy-subrc = 0 AND <fs_t134t> IS ASSIGNED.
      ASSIGN COMPONENT 'MTBEZ' OF STRUCTURE <fs_final> TO <fs_value>.
      <fs_value>      = <fs_t134t>-mtbez.
    ENDIF.
ENDIF.
ENDFORM.                    " get_other_data
*&      Form display_data
      text
FORM display_data USING    p_l_table
                            p_l_fcat.
DATA:
Variable for Object Creation
o_report TYPE REF TO lcl_report.
CREATE OBJECT o_report.
o_report->display( EXPORTING l_table = p_l_table
                               l_fcat = p_l_fcat ).
ENDFORM.                    " display_data

I don't know how to read the code you pasted or I would have checked this myself.
Do your fields in the internal table reference dictionary objects or elementary types? If not using dictionary types, the column names will be blank by default. If you can't change your fields to be dictionary types, you can try this to change the column names:
I made a method inside my local class to add the names:
        call method set_colname
          EXPORTING iv_tab = alv_tab
                    iv_colid = 'xxxx' "fieldname from the table
                    iv_stxt = text-t54
                    iv_mtxt = text-t55
                    iv_ltxt = text-t55.
METHOD set_colname .
data:
          alv_cols type REF TO cl_salv_columns_table,
          alv_col type REF TO cl_salv_column.
TRY .
*... Change fieldnames
        call METHOD iv_tab->get_columns RECEIVING value = alv_cols.
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please refer this thread for similar kind of discussion...
http://forums.sun.com/thread.jspa?forumID=57&threadID=571445Thanks
Suyog

Please refer to the first reply of [this thread|http://forums.sun.com/thread.jspa?forumID=57&threadID=571445] for the answer. If you have a specific problem implementing it, post you code with a specific question.

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