Question: im building a website for learning .. and it have a live streaming session section on the website where users can watch a live session online.

so, i have two choices for the technology i must use which is GWT (Java) or Drupal (PHP) ??

looking for advices .. Thanks :)

Answer: 
Are you sure that the punktzahl-variable you are adding together is the one from class antworten? You're writing antworten.geo, but not antworten.punktzahl. 

If you try to look up the variable in the IDE where do you arrive?
You might try using `.intValue()`:

```
int tempInt1 = 5;
int tempInt2 = 4;
int tempInt3 = tempInt2.intValue() + tempInt1.intValue();

```

or `.add()`

```
int tempInt1 = 5;
int tempInt2 = 4;
int tempInt3 = tempInt2.add(tempInt1);

```

I don't have a compiler at hand, so I don't know if these will work, but they're something to try.

Also, keep in mind that if somewhere you ever accidentally add a string to an int, **the resulting value will be a string!** That might be a reason why you might have strings where you did not expect them.