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In the HashMap, we know the values but we dont know the key, then how can we get the key from HashMap ?????
4 9383What is the differenc between Enemuration interface and iterator interface according to accessing?
4 8701In 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.
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How many types of java are there?
How many ways can an argument be passed to a subroutine and explain them?
Which is the best approach for creating thread ?
What is thread safe java?
Can a boolean be null java?
What is the use of using enum to declare a constant?
What is an object in java and how is it created?
What is the difference between equals() and?
What is the final class?
I want to print “hello” even before main is executed. How will you acheive that?
What is a file pointer?
Is a class subclass of itself?
What is meant by oops concept in java?
What is a null class?
How many inner classes can a class have?
