Question

Whenever I introduce the array, i get this error. I tried different array types…but no luck.

public class Classifytestclass2 extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
         int test2[] = null;
        for(int i=0;i<50;i++){
               test2[0]=1;
        }
    }
}

edit:
forgot to mention, the entire app crashes (force close.)

Answer 1

It’s normal to get a NullPointerException because you didn’t initialize the array(). You have to do something like this:

int test2[] = new int[50];

to initialize an array with 50 elements.