| Other Core Java Interview Questions |
| |
| Question | Asked @ | Answers |
| |
| What is difference between static method and static
variable? | | 6 |
| What is meant by JVM ? | | 3 |
| Difference between canvas class & graphics class? | | 1 |
| what is Dictionary? and what purpose it is used for? | | 2 |
| What is meant by event handling? | | 1 |
| AWT event listeners extends what interface? | | 1 |
| Difference between Hash Table and Hash Map? | Persistent | 7 |
| what is polymorphism? | | 2 |
| can we have virtual functions in java? | Wipro | 7 |
| is java support call by reference and call by value, if
supports please explain? | | 3 |
| can you create interface instance ? | Fidelity | 27 |
| what's diff between struts 1.1 & 1.2 | Wipro | 2 |
| what is a package? | | 8 |
| In the first round, there are 30 aptitude and 30 java
questions. We are suppose to finish both the papers within
60 minutes.
I cleared this round.
Next was test for programming skills.
In this section, Some 7 n's were asked.
1.
What is the difference b/w sleep(1000) and wait(1000)
2.
what is the diff b/w static block and static function?
3.
Write a program to validate IP address using string
tokenizer.
4.
Write a program to create singleton class
5.
write a function to reverse the string
6.
Write a prog to print prime nos upto n. EX: If n=9, It shld
print 1,2,3,5,7
7. One program on collections- Write a program to print no.
of times a number is repeating in an array.
EX- {1,3,1,2,5,7,3,7,34,3,8,3}
It should print: 1- 2 times
3- 4 times and so on
7. Write a func to print fibonocci series
After this I had technical interview, which went on for.
60 mins or so. There were qn's about multi threading,
Exception handling and collection classes.
Knowledge about collections was very important for the
post I was interviewed for. | Huawei | 1 |
| whst is encapsulation?when u encpsulate actually while
devoloping code? | AMDOC | 5 |
| using equals method overriding which objects are
compared?i.e same class objects or other class
objects?Explain me. | | 3 |
| C and C++ has constructors and distructors, why does Java
does not have distructors? | T3-Softwares | 1 |
| What is the use of bin and lib in JDK? | | 3 |
| What are different type of access modifiers? | | 3 |
| I have an HashMap object, which has with key and value pair.
It has 10 keys and values in that object. Now the question
is I want insert new key and value in middle or any where in
that list but not at the end or at the top. Is it possible
or not. If yes how can we achieve this one? | Huawei | 1 |
| |
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