swing - Why is an animated .gif icon not showing in JTable column? -

here processing.gif

here initial.png

here output

here code. processing.gif working in other locations such in tab of jtabbedpane. here in column of jtable, not showing. explanation , solution? processing.gif moving icon indicates loading.

import javax.swing.*; import javax.swing.table.*;  public class tableicon extends jframe {     public tableicon()     {         imageicon initial = new imageicon(getclass().getresource("initial.png"));         imageicon processing = new imageicon(getclass().getresource("processing.gif"));           string[] columnnames = {"picture", "description"};         object[][] data =         {             {initial, "initial"},             {processing, "processing"}         };          defaulttablemodel model = new defaulttablemodel(data, columnnames);         jtable table = new jtable( model )         {             public class getcolumnclass(int column)             {                 return getvalueat(0, column).getclass();             }         };         table.setpreferredscrollableviewportsize(table.getpreferredsize());          jscrollpane scrollpane = new jscrollpane( table );         getcontentpane().add( scrollpane );     }      public static void main(string[] args)     {         tableicon frame = new tableicon();         frame.setdefaultcloseoperation( exit_on_close );         frame.pack();         frame.setvisible(true);     }  } 

animated gif's don't work default in jtable. there easy way fix this, use animatedicon class can found here

basically, reimplements icon interface, register rendered icon, , when new frame of gif needs painted, automatically repaint correct area.

there alternative provided here register specific imageobserver each cell needs render animated gif, find bit more tedious.