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Re: how can i set center

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  To: comp.lang.java.gui

Michael Rauscher wrote:
> ashwinijain schrieb:
> > Michael Rauscher wrote:
> >> ashwinijain schrieb:
> >>> hi, i am using a jtable for making some calculation and i want to set
> >>> the center alignment of last column.
> >>> But i really dont know how to set it?
> >>> Please help me out...
> >>> I used following method but it works for all columns..
> >>> ((JLabel)tab1.getDefaultRenderer(String.class)).setHorizontalAlignment
> >>> (JLabel.CENTER);
> >>>
> >>> And i want to set alignment for last column only.
> >>>
> >> There are different methods to do what you want to be done :)
> >>
> >> The most simple should be to override JTable#getCellRenderer, e. g.
> >>
> >> JTable myTable = new JTable(myModel) {
> >>      public TableCellRenderer getCellRenderer( int row, int col ) {
> >>          TableCellRenderer renderer = super.getCellRenderer(row,col);
> >>          if ( col == dataModel.getColumnCount() - 1 )
> >>              renderer.setHorizontalAlignment( SwingConstants.CENTER );
> >>          return renderer;
> >>      }
> >> };
> >>
> >> Bye
> >> Michael
> >
> > Thanks but its giving me error that "setHorizontalAlignment(int) is
> > undefined for renderer.
>
> Sorry, I forgot to cast. Change the above to:
>
>        TableCellRenderer renderer = super.getCellRenderer(row,col);
>
>        int alignment = (col == dataModel.getColumnCount() - 1) ?
>                SwingConstants.CENTER : SwingConstants.LEFT;
>
>        ((JLabel)renderer).setHorizontalAlignment( alignment );
>        return renderer;
>
> Should work (but not tested).
>
> Bye
> Michael

Thank you very much, its working.
But you know now what has happened. i am already applying one cell
renderer to my table so ur code giving error "class cast exception"

class MyCellRenderer extends JTextArea implements TableCellRenderer {
public MyCellRenderer() {
    setLineWrap(true);
    setWrapStyleWord(true);
    setPreferredSize(new Dimension(465,340));
    setAlignmentY(RIGHT_ALIGNMENT );
 }

public Component getTableCellRendererComponent(JTable table, Object
        value, boolean isSelected, boolean hasFocus, int row, int
column) {
    setText((String)value);
    setSize(table.getColumnModel().getColumn(column).getWidth(),
            getPreferredSize().height);
    if (table.getRowHeight(row) != getPreferredSize().height) {
            table.setRowHeight(row, getPreferredSize().height);
    }
    
    return this;
}
} 

can u solve this problem?

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Re: how can i set center "Michael Rauscher" <michael.rauscher@THRWHITE.remove-dii-this> - 2011-04-27 15:29 +0000
  Re: how can i set center "ashwinijain" <ashwinijain@THRWHITE.remove-dii-this> - 2011-04-27 15:29 +0000
    Re: how can i set center "Michael Rauscher" <michael.rauscher@THRWHITE.remove-dii-this> - 2011-04-27 15:29 +0000

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