THIS Keyword in Java (Rules)

Ø  This must be the first statement if we use this in constructor.

Ø  This can be used to refer current class instance variable (Data shadowing).

Ø  This keyword can be used to invoke current class constructor.

Ø  Use this keyword we can achieve constructor chaining.

Ø  We can print the value of This keyword using println function which return the value of current class instance.