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Anonymous class

Tricky Java: Final in Anonymous Classes

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Given the following code snippet in Java, what is true regarding anonymous classes?

interface Movable { 
    void move(); 
} 

final int speed = 10; 
Movable object = new Movable() { 
    @Override public void move() { 
        speed = 20; 
    } 
};

Select one option from the list

The code will not work, because 'speed' variable is 'final' and cannot be modified.

This is an improper usage of interface, because it is not supposed to be implemented in an anonymous class.

A new class ’Movable’ is created with this code.

The code will work, because anonymous class can modify the 'final' variable 'speed'.

Anonymous class does not provide an implementation for all methods defined in the interface in this code.

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