dtm.readData(0, (int) num);
if (target != null) {
OutputStream os = new FileOutputStream(target);
DbfOutputStream dos = new DbfOutputStream(os);
dos.writeModel(dtm);
} else {
dtm.setWritable(true);
dtm.exitOnClose = true;
dtm.showGUI(args[0], MODIFY_ROW_MASK | MODIFY_COLUMN_MASK
| SAVE_MASK);