Mastek: 1) online mcq technical: Total 31 questions 1 hour. Around 10 to 15 questions were based on core java and remaining were based on spring, web services, and some others also. Core Java questions were simple and mostly on iverloading and overriding . Cut of is low. Round : Technical 1) given an array. Remove duplicates . Don’t use another array, collections. 2) write user defined generic class 3) does hash map store duplicate keys. Why? 4) what will happen if hashcode algo generates same hashcode for different keys. 5) volatile vs transient 6) 4 tread in execution. How do I move ahead In the program only after all 4 threads have terminated. 7) int i = 10; Vs Integer I= 10; where will both the variables be stored. 8) how to increase heap area. 9) serialisation 10) tell me everything about interfaces. 11) tell me everything about object. 12) what will happen if a return in try block. 13) how many catch blocks can u write. 14) u have made notepad app. How to prevent it from creating multiple instances.
