1st Round: 1) introduce urself 2)rate yourself in java 3) abstract classes and interface. 4)how to achieve multiple inheritance in java 5) synchronization 6)multi threading 7)program to print no 1-10 using synchronization with wait(),notify() . 8)given a array ,find 2nd highest no 9)given a char array or string,find the no of character count. 2nd Round 1) singleton design pattern. 2)program of prime no 3)program of binary search 4) collection hierarchy 5)diff between array list and linkedlist 6)diff between hash table and hash map 7)linked list program of adding a element in the middle and removing any other element . 8)program-any operation perform using map. 9)volatile keyword 10) transient keyword 3rd Round 1)difference between- equals() or == 2) synchronization question-given you a class in which two methods are there which is synchronized.and another class is there in which you a method is there in which thread are calling the 1st synchronized method by two thread.what is the output. 3)real life problems in java (practice hacker rank Ques as much as possible) 4)check the sum.of the diagonals are equal or not(taking in mind the complexity issue) 5) write a program to find the student details if I pass the name or the roll no of the student and also find which student get the 2nd highest no. 6) they confuse you in abstract classes and interface