PIbd-23_Dolgov_D.A._Airbus._Hard/EntityWithIlumCreator.java

import java.util.Random;

public class EntityWithIlumCreator <T extends EntityAirbus, U extends IDrawingIlum>
{
    private final Object[] entityArr;
    private final Object[] IlumArr;

    int entitiesCount = 0;
    int ilumCount = 0;

    public EntityWithIlumCreator(int countEntities, int countExtra) {
        entityArr = new Object[countEntities];
        IlumArr = new Object[countExtra];
    }

    public void Insert(T entityAirbus) {
        if(entitiesCount < entityArr.length) {
            entityArr[entitiesCount] = entityAirbus;
            entitiesCount++;
        }
    }

    public void Insert (U extra) {
        if(ilumCount < IlumArr.length) {
            IlumArr[ilumCount] = extra;
            ilumCount++;
        }
    }

    public DrawingAirbus getEntityWithExtra() {
        Random random = new Random();
        int getEntityRandomIndex = random.nextInt(entityArr.length);
        int getExtraRandomIndex = random.nextInt(IlumArr.length);

        EntityAirbus airbus = (T)entityArr[getEntityRandomIndex];
        IDrawingIlum ilum = (U) IlumArr[getExtraRandomIndex];

        if (airbus instanceof EntityAdvancedAirbus) {
            return  new DrawingAdvancedAirbus(airbus, ilum);
        }
        return new DrawingAirbus(airbus, ilum);
    }
}