Compile-time error: cannot assign final

Anatomy of a Class

AP Computer Science A· difficulty 2/5

public class Box {
    private final int CAPACITY;
    public Box(int c) { CAPACITY = c; }
    public int getCap() { return CAPACITY; }
}
// ...
Box b = new Box(50);
System.out.println(b.getCap());

What is printed?

A
$50$
check_circle
B
$Compile-time error: cannot assign final$
C
$0$
D
$null$

Explanation

A blank final instance variable can be assigned exactly once in the constructor; this is allowed.

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