Explain the use of sublass in a java program?

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What is listnode in java?

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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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as we know a static method could access static data and static method only. then how could main method call the object of aclass which is not static and other non static data

1 Answers  

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How can you sort dates?

2 Answers   TCS,

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what is the use of custom tags? with example?

1 Answers   Photon,

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which class to use when concatenating strings in a loop.

3 Answers   IBM,

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What are white spaces in java?

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What is the major advantage of external iteration over internal iteration?

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When should the method invokelater() be used?

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What is the vector class in java programming?

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What does escaping a character mean?

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