[Solved] How is it possible to use a “new” as parameter in side another new?

Question

The new operator is used to create an instance of a class. What’s happening in new Bus(new PrototypeEngine1()).drive() is that an instance of PrototypeEngine1 is being created as an argument to new Bus().

To illustrate this concept, let’s refactor the single line of code in step by step manner:

PrototypeEngine1 engine = new PrototypeEngine1();
Bus bus = new Bus(engine);
bus.drive();

These lines of code are practically equivalent to that original one line of code.

Accepted Answer

The new operator is used to create an instance of a class. What’s happening in new Bus(new PrototypeEngine1()).drive() is that an instance of PrototypeEngine1 is being created as an argument to new Bus().

To illustrate this concept, let’s refactor the single line of code in step by step manner:

PrototypeEngine1 engine = new PrototypeEngine1();
Bus bus = new Bus(engine);
bus.drive();

These lines of code are practically equivalent to that original one line of code.