First round (written)(Elimination Round) questions having very basic question based on java ,SQL,Linux and aptitude. Aptitude questions were based on percentage and other arithmetic questions.There were word puzzles,identify number pattern etc. Second Round First q was having puzzle of bottle with a cork and coin inserted.We need to take out the coin without breaking the bottle.Second q was a series of number and we have to find out the output of series.Third question was difference between overriding and overloading.Next q was can overloading be done for different classes.This second round lasted for 20 minutes. Third Round First question was which language u good at? Second q was why you like java over other languages? Third q was how java is platform independent? Forth q was ...A string was given ...Welcome to One97 communications. Write a code to take this input and print One 97 communications welcome to.Make the program dynamic so that every input works in the same fashion. Fifth q was a puzzle ...there were 3 containers with 8,5 and 3 liters.U dnt have any means for measurement.Perform operations such that at last we have two containers each with 4 liters. Write code to print number from 1 to 100 without using any loop. This round lasted for 20 minutes. 4th round First q was print a pattern of stars. Second q was print same pattern in reverse. Third q was Perform selection sort in java and explain its time complexity. 4th q was SQL query to get 5 employees with max salary. 5 q was difference between overloading,overriding.Use of static keyword,Try Catch Finally,how it works ,is finally optional,how many catch for one try block,use of constructor,difference between is a and has a relationship.provide example of has a relationship.More sql queries. questions on thread management like use of wait method,sleep method etc. Methods in object class.Write code to show polymorphism. How many inheritance types in java.Difference between DML and DDL (DBMS).Delete belongs to ddl or dml? Write code to find objects of class . Write recursion program for Fibonacci series. Questions on collection interface. Write SQL query using having clause.Can we use having clause without where clause? Use of hash map .How hash map different from array list .Time complexity of hash map. Is String immutable or not?If yes then how to make it mutable? How String Buffer works internally in memory?