Why are lists ordered in java?

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How to convert string to byte array and vice versa?

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What is toarray method in java?

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How many bits does a boolean take?

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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.

1 Answers   Huawei,

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What is an array and a vector? How they different from each other?

4 Answers  

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Is it possible to do method overloading and overriding at a time

3 Answers   L&T,

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What are the elements of java?

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When is the finalize() called?

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What is the diff. b/w Interfaces & Abstract class?

6 Answers   Ericsson,

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what is thread? What are the high-level thread states? Or what are the states associated in the thread? : Java thread

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What are bind parameters?

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