Question

Im trying to use an integer, that Im using in one class and also use the SAME int in a different class.
I forgot, what do I have to do for that?

static? implements? extends? what?

Best regards,

For simplicity:

      public class ETBetaActivity extends Activity implements View.OnClickListener {
      public static int anInt = 50;

Another class

            public class GUI extends Activity implements View.OnClickListener {
             public static int anInt_2 = 5+anInt;

Answer 1

static is used to set that value to class, so all objects of the class will have that.

example:

  public class FirstClass
  {
      public static int yourInt;
  }

and you can access it like this: FirstClass.yourInt

You should consider the following example, if you want to avoid static:

public class FirstClass  
{
   private int yourInt;

   public getInt(){return this.yourInt;}
   public setInt(int _int){ this.yourInt = _int}
}

and from all the classes you can use this using getters and setters. Note that if you use 2nd method (with getter and setters ) you will have different values for yourInt, for each object you create, and that value should be set on constructor .