Is empty .java file name a valid source file name?

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Explain naming conventions for packages?

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what is mean by String and StringBuffer? What is mean by Methooverriding and Overloading?

3 Answers   Satyam, STI,

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What do you mean by stream pipelining in java 8?

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Can we use static class instead of singleton?

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What are the pillars of java?

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What is one third plus one third as a fraction?

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Difference between a Canvas and a Scroll Pane?.

1 Answers   NIIT,

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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 a ternary operator in java?

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How can an exception be thrown manually by a programmer?

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What is method in java with example?

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