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: 
If you add the strings "2", "4", and "5", together, you'll get "245", whereas if you add ints, you'll get 11. Your variable "punktzahl" must be holding a string.
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.