Constructor

• Constructor is a special type of method whose name is the constructor.
• Constructors are executed automatically when the object of the class is created.
• Always Constructor’s visibility is public.
• 2 types.

1. Instance constructor.
2. Static constructor.

• The instance constructor called automatically when the object is created.
• Instance constructor can be called as per the number of objects are created.
• Instance constructor can be called method name "CONSTRUCTOR".
• An instance constructor can have IMPORTING parameters and exceptions. You must pass all non-optional parameters when creating an object.

• Static constructor can be called only once when the class has been loaded.
• Static constructor has 1st priority than Instance Constructor.
• Static constructor can be called method name " CLASS_CONSTRUCTOR".
•  Static constructors have no parameters.

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