// fields
 private JTable table;
     private DefaultTableModel dtm;
     private String[] columns = {
         "Filename",
         "Original size",
         "Compressed size",
         "%",
         "Compression type"
        };
     private Vector columnNames = new Vector(Arrays.asList(columns));

// from the constructor
dtm = new DefaultTableModel(columnNames,0);
        this.table = new JTable(dtm);

// method
public void rebuildTable() {
        int counter = 0;
        for (int i = 0 ; i < dtm.getRowCount() ; i++ ) {
            dtm.removeRow(i);
        }
        for (StoredFile s: sfiles ) {
            String[] data = {
                s.getName(),
                Integer.toString(s.getOriginalSize()), 
                Integer.toString(s.getCompressedSize()),
              Integer.toString((s.getCompressedSize()/s.getOriginalSize())*100),
                s.getCompressorName()};
            dtm.insertRow(counter,new Vector (Arrays.asList(data)));
            counter++;
        }
    }