Concepts in java

 What is the difference between equals () and == operator?

== checks if both references points to same location or not. equals() method should be used for content comparison. equals() method evaluates the content to check the equality.

What is meaning of ++ i?

++i means pre increment it means first value is incremented and then printed. i++ means post increment it means first the value of i is printed and then incremented.

What is the difference between equals () and == operator?

== checks if both references points to same location or not. equals() method should be used for content comparison. equals() method evaluates the content to check the equality.

What is meaning of ++ i?

++i means pre increment it means first value is incremented and then printed. i++ means post increment it means first the value of i is printed and then incremented.