checkPermissions.java

public boolean checkPermissions()
{
    // validDate is necessary in order for a permission to be valid.
    return prem.validDate == currentDate &&
              prem.allowedToFetch(id) && 
              prem.type == PremissionType.Admin;
}

checkPermissionsRef.java

public boolean checkPermissions()
{
    // validDate is necessary in order for a permission to be valid.
    return prem.allowedToFetch(id) && 
              prem.type == PremissionType.Admin;
}

ex1.java

public List<Object> goGetThem(Color1 c)
{
    List<Object> them = new ArrayList();
    for (Object thing : those)
    {
    	if (thing.color == c)
        { 
            them.add(thing);
        }
    }
 
    return them;
}

ex1Sol.java

public List<object> getChildrenByColor(RGBColor rgbColor)
{
    List<object> matchedChildren = new ArrayList();
    for (Object childNode : children)
    {
           if (childNode.color == rgbColor)
           { 
                matchedChildren .add(childNode);
           }
    }

    return matchedChildren ;
}

ex2.java

class personDataFetcher
{
    public Person getPersonById(int id)
    {
         Permission prem= curUser.getPermissions();
         if (prem.validDate == currentDate &&
            prem.allowedToFetch(id) &&
            prem.type == PremissionType.Admin)
         {
              Person person = db.selectPerson(id);
              
              if (person != null)
              {
                    return person;
              }
              
              throw new InvalidArgumentException("Invalid user id");
         }
    }
}

ex2Sol.java

class personDataFetcher
{
    public Person getPersonById(int id)
    {
         Permission prem = curUser.getPermissions();
         if (isAllowedToFetch())
         {
              Person person = db.selectPerson(id);
              
              return getUserOrThrowIfInvalid(person);
         }
    }

    private boolean isAllowedToFetch()
   {
         Permission prem= curUser.getPermissions();

         return prem.validDate == currentDate &$
                  prem.allowedToFetch(id) && 
                  prem.type == PremissionType.Admin;
   }

   private Person getUserOrThrowIfInvalid(Person person)
   {
               if (person != null)
              {
                    return person;
              }

              throw new InvalidArgumentException("Invalid user id");
   }
}

withComments.java

// those - type:Components - This components children
// them - type:Components - the filtered children by color.
// c - type: color1 - the color to filter by
// this method gets children by color (RGB not RGBA)
{
public List<object> goGetThem(Color1 c)
{
    List<object> them = new ArrayList();
    
    for (Object thing : those)
    {
           // Filters by the give RGB color (Notice this does not take the alpha channel into account.
           if (thing.color == c)
           { 
                them.add(thing);
           }
    }

    return them;
}