Classe TipoContrato, está com erro.
package cap3;
public enum TipoContrato {
NOVO,
EM_ANDAMENTO,
ACERTADO,
CONCLUIDO
}Description Resource Path Location Type The project was not built since its build path is incomplete. Cannot find the class file for java.lang.Enum. Fix the build path then try building this project designe-patterns-2 Unknown Java Problem