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Rolta Core Java Interview Questions

Questions Answers Views Company eMail

How will you measure that int takes up only 32 bits in memory?

2 5777

Map map = new HashMap(2); map.add(“1”,”one”); map.add(“2”,”two”); map.add(“3”,”three”); What will happen at this line?

5 16008

Write down program for following scenario. Use java coding standard. You have array list with some words in it..we will call it as dictionary….and you have a arbitrary string containing some chars in it. You have to go through each word of dictionary and find out if that word can be constructed with the help of chars from arbitrary string given. If you find the word print it else print none.

2732

Can we iterate through collection using for loop?

2 6175

Why Set interface contains unique elements, what internally implemented for this so that it contains unique elements?

1 8109

What will be the output of the program? public class Test { public static void main(String args[]) { ArrayList list = new ArrayList(); list.add("2"); list.add("3"); list.add("4"); list.add("5"); System.out.println("size :"+list.size()); for(int i=0;i 5 8482

What is the use of static import ?

4 10057

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Rolta Core Java Interview Questions

Rolta Core Java Interview Questions (7)

Un-Answered Questions

What is KeyValueTextInputFormat in Hadoop?

529

Hi! Greetings of the day. Can somebody tell me about as built duct sheet area calculation method. As we know that for this purpose A = (W+H)*2*L. But I have query about multiplication factors for elbows, tappers, offsets etc if there is any. Also refer the papers if available. Please revert. Thanks in advance.

1934

Why do we use hashmap?

1044

What are the Main functions of Java?

1092

What is the use of mysql connector?

what is procedure to get c form? what is procees to get vat /tin no

2496

How do I get microsoft word?

619

What is the difference between routers and hubs?

1040

What does <> mean in html?

828

What is big data concept?

526

what is the maximum passage number for T47D cells?

2577

How to check the server version in oracle?

1092

What is dynamic array how it is created?

912

Is angularjs opensource?

840

What is the difference between multiple and multilevel inheritance in c++?

1132