This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
if in a subclass we want superclass constructor to be accessed and i want to use both this and super keyword and both are written just after the constructor defined then in above case which one will be written first?
You can't call both a super- and this-constructor in one constructor. It's simply not allowed.
The soul is dyed the color of its thoughts. Think only on those things that are in line with your principles and can bear the light of day. The content of your character is your choice. Day by day, what you do is who you become. Your integrity is your destiny - it is the light that guides your way. - Heraclitus
You can only use one of the two. If you use "this", then another constructor will be called in the same class; if that constructor uses "this", then a third constructor will be called, etc. Eventually, you'll get to a constructor that doesn't use "this", and in that constructor, "super" can appear.