NOTE:- Constructors do not have a return type, even void.

Why do we need a constructor?
Ans: - To initialise the memory of a variable or field.

• Every non-static class contains an implicit constructor if not defined explicitly.

• If we define an explicit constructor with static modifiers, it is referred to as a static constructor, whereas others are non-static constructors.

• Non-static constructors may be implicitly or explicitly provided.

• If you do not provide an explicit one, then the compiler provides an implicit constructor.

• Static field/variable initialised by static constructor.

• Static constructors are implicitly called, but non-static constructors are explicitly called.

• Static constructor executes immediately once the execution of the class starts.

• Static constructor executes only once, but non-static constructor executes zero times if no instance is created and n times if n instance is created.

• Non-static constructors may be parameterised, but static constructors are parameterless because they are implicitly called and it is the first block of code run under the class.

• Non-static constructors may be overloaded, but a static constructor can not be overloaded.

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