Ordenar en Jtable

[dezky]

Proba poniendo

final DefaultTableModel dtm = new DefaultTableModel() {

public Class getColumnClass(int columnIndex) {
if (columnIndex == 0) {
return String.class;
}
if (columnIndex == 1) {
return Date.class;
}
if (columnIndex == 2){
return Long.class;
}
return String.class;
}
}