Capgemini Software Engineer Java Developer interview questions

I got shortlisted for capgemini through seed infotech pune. The process took 2 days first was aptitude test which was easy It had 3 sections 1. Verbal In this solve the passage, synonyms and opposites of words, use of articals, completion of sentence, etc. 2. Logical and Reasoning topics like sylloigism n other reasoning topics etc 3.Quantitative was a bit tough topics covered are time and work, permutations and combination, speed and distance, sequence, number system etc. and then the 2nd round was about technical aptitude test based on java. these two rounds are conducted in seed infotech itself and then i'm selected for next process next two rounds were in company premises and it was GD. after GD there was the final combined round and i.e. TECH+HR interview. in 4rth round i.e. in TECH+HR round all basic questions of java and a program to find max from array was asked. Q. of TECH+HR round 1. can we write a constructor in an Abstract class? 2.Difference between abstract class and interface? 3. why we use transient keyword in JAVA? 4.tell me about arraylist? 5.which collection can have non duplicate or unique value? 6. why we use abstraction and polymorphism? 7.Explain Types of polymorphism? 8.what is exception in java? Explain its Types. 9.why we use final keyword and where it can be used? 10. WAP to find max no. from an array.