Answer Posted / tanuj

== operator return true if both reference variable pointing
to same object.
equals() method also use == as default, but String and
Wrapper classes override (you can also override) it but
meaningfull comparison , as in two same String case it
returns true for equals()method.

for knowing it clearly make small programs by using both.
there are so many exception in wrapper classes.

I want to store more than 10 objects in a remote server? Which methodology will follow?

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1.IN CASE OF DYNAMIC METHOD DISPATCH WHY WE USE REFERENCE VARIABLE,WE CAN USE THE DIFFERENT DEFINED OBJECT DIRECTLY TO ACCESS THE DATA MEMBER AND MEMBER FUNCTION OF THAT RESPECTIVE CLASS?WHAT IS THE MAIN FUNCTION OF "REFERENCE VARIABLE" HERE?

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