Java Questions

"eval" is not a keyword and is can be used as variable.

All the statements are equal because inside an interface a variable declared will be public static final by default 

Open addressing (closed hashing),

The methods used include: Overflow block,

 Closed addressing (open hashing)

The methods used include: Linked list, Binary tree…

A lock can be acquired on a class. This lock is acquired on the class's Class object.

Constructors use this to refer to another constructor in the same class with a different parameter list.

Constructors use super to invoke the superclass's constructor. If a constructor uses super, it must use it in the first line; otherwise, the compiler will complain.

java.lang.String,  java.lang.Math are final classes.

The heterogeneous linked list contains different data types in its nodes and we need a link, pointer to connect them. It is not possible to use ordinary pointers for this. So we go for void pointer. Void pointer is capable of storing pointer to any type as it is a generic pointer type.