-->1st round was basic question like cloning ,immutable and basic java question and programs like synchronization and custom sub string. -->2nd round was only programming.programs are below. 1.circular link list. 2.custom link list. 3. input-- int [] arr={1,2,3,4,5,6,7,8,9,10}; int b=4; output=4,3,2,1,8,7,6,5,9,10 number are reversing in given frequency like in this program frequency is 4.if not matching the frequency then it should not reverse. 4.Write a program to print like JSON format by using reflection. -->3rd round was managerial stuff like how to handle code quality and keep the spirit up etc. -->4th round was coding which consist two coding question . which can be solved by taking help from google.