@Override
public boolean equals(Object obj) {
if (this == obj) return true;
if (obj == null) return false;
if (getClass() != obj.getClass()) return false;
Juncao other = (Juncao) obj;
if (retanguloA == null) {
if (other.retanguloA != null) return false;
} else if (!retanguloA.equals(other.retanguloA)) return false;
if (retanguloB == null) {
if (other.retanguloB != null) return false;
} else if (!retanguloB.equals(other.retanguloB)) return false;
return true;
}
