Create new instance of object's class

Question

Let's say I have an object called myCar that is an instance of Car.

myCar = new Car();

How would I do to create a new instance of that class based on the object? Let's say that I don't know which class myCar was created from.

otherObject = new myCar.getClass()(); // Just do demonstrate what I mean (I know this doesn't work)

UPDATE

public class MyClass {
    public MyClass(int x, int y, Team team) { }
    public MyClass() { }
}

Object arg = new Object[] {2, 2, Game.team[0]};

try {
    Constructor ctor = assignedObject.getClass().getDeclaredConstructor(int.class, int.class, Team.class);
    ctor.setAccessible(true);
    GameObject obj = (GameObject) ctor.newInstance(arg);

} catch (InstantiationException x) {
    x.printStackTrace();
} catch (IllegalAccessException x) {
    x.printStackTrace();
} catch (InvocationTargetException x) {
    x.printStackTrace();
} catch (NoSuchMethodException x) {
    x.printStackTrace();
}

I get the following error:

java.lang.IllegalArgumentException: wrong number of arguments

getDeclaredConstructor() works and finds my constructor with three args, but newInstance(arg) won't work for some reason, it says "wrong number of arguments". Any idea why?

Answer 1

With reflection

otherObject = myCar.getClass().newInstance();

Assuming your class has a default constructor. You can do more advanced operations with non default (empty) constructors

Constructor[] constructors = myCar.getClass().getConstructors();

And choose the one you want.

Read through this for more details about Java's Reflection capabilities.