Send variables across classes: Java

I'm trying to store variables generated in one class to an array in another class.

i.e (pseudo code):


Class example
{
  x = 2+2;
}

Class stuff
{
  array[0] = example.x;
}

why doesn't this work.

>>16
It's funny because you even know it's an OO language, but you refuse to use it like one. Kill yourself.