Datentypen

Typecasting

stored in stack memory
Primitive variable: stores its actual values
Non-primitive variables: stores the reference variable which point to the address of the object they’re referring to
- During invocation:
Arguments are always passed-by-value

Primitive variable:
- copy value inside stack memory
- pass value to the callee method
Non-primitive variables:
- a reference in stack memory points to the actual data which resides in the heap
Objects:
- copy the reference from stack memory
- pass reference to callee method

public class <Name> {
    // Attribute
    // Konstruktor
    // Methoden
}

public <Klassenname>(<Parameter>) {
<Initialisierung>
}

public static void main(String[] args)

wird benötigt, wenn die Methode auch ohne erstellen eines Objektes aufrufbar sein soll

Modul algodat = new Modul( );

Modul algodat = new Modul( );
Modul introprog = algodat;

Sources: