Delloite
1.what is diff between procedural oriented language and object oriented lnaguage
2.oops concept explain
3.diff between abstraction and encapsulation
4.abstaction and abstract class is same
5.diff between abstraction and interface
6.whats is muliple inhetance in java
7.can muliple inheritan e possible in java using abstract class
8.what is o/p of below code

interface a{
int i=10}

interface b{
int i=5}


class c a,b{
sop(i)
}

o/p:?

9.write code for jdbc connection in java
10.how Hashmap internally work
11.write code to retrieve elements from hashtable
12.diff between vector and arraylist
13.what is synchronization
14.what ibm websphere?is it application server or web server?why you use it?
15.diff between application server and web server

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 ?