L & T (telephonic)

1.get access data from database using thread in concurrent manner
2. How to set priorities in two task ?--- PriorityQueue
3.how to set priorities in thread ?
4.how you handle outofmemmory error ? Weather we handle outofmemmory error or not ?
5. Best way read large files ?
6.When use bufferreader what happened internally ?is buffer reader store internally store anything to cap memory/cache.
7. What is scanner ? Difference between buffer reader and scanner ? When use bufferreader or when use scanner ?
8. Java Nio ?
9. Jdk 1.8 features ?
10. What you understand abstract or interface ? Can we create Constructor in abstract class or interface ?
11. What is Polymerphism ? WHAT IS Overloading or Overriding ?
12. Hibernate,JPA and Spring
13. What is high level design or low level design ?what is key factors while preparing designing like logging,scalability ?
14.what you advice while designing your application for performance in database access? What type of designing pattern use in this case ?
15. Rest API ? What framework use? What library use like Rest Api ,Spring MVP , JERSEY
16 What type Soap web services use ? ---- AXIS 2
17. Ever use Database Join ? Any experience store procedure ? How to call store procedure from java
18 Linux ? tomcat with NO HOP Command ? Unix Command to print websphere process ID ?
19 how to KILL PID in Linux ?---- Kill -9 PID
20.how to read core dump ?

TIAA
1.how NLP Implemented in your company
2.NLP algorithm ?
3.NLP working in KB? How AI is implemented

Synechron for UBS
1. What is OOPS principles ? What's is abstractions ? If interfaces in java 8 is similar to abstract class then why it is required ?
2. Composition and Aggregation
3.what is indexing in SQL ? types of index ?
4.what is difference between concurrentHashMap and hashMap ? What is LINKEDHASHMAP ?
4. Return in try and return in finally what value shoud return
? What happened if exception in finally ?
5. Design patterns in java ? What is singleton design pattern ? Where singleton pattern used ?
6. How to create custom exception ?
7.What is the difference between ClassNotFoundException and NoClassDefFoundError?
8. Difference between synchronised and lock
9. What is difference between notify ()and notifyall() ? If notifyall() then why required notify() ?
10. What is read write lock in java ?.
11. What is Retrancelock() ?
12 what I producer and consumer model ? What is blocking queue
13. What is countdownlatch ? What is cycallibarrier ?
14. What is java 7 features ?
15. What is SOLID principles

What is Invasive & Non Invasive ?
what is POJO ?
what is POJI ?
what is Java Bean Class ?
What is Bean class/Component class ?
what is Spring Bean class ?