what is hashmap& hashtable with example?

1 Answers   CTS,

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What is inner class?what is the use of inner class?where we create the object for inner class? and inner class can extend any class or inner class can implement any interface?

1 Answers   Wipro,

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class A{ some variables; public void a()throws Excepion1,Exception2{....} } class B extends A{ variables... public void a()throws E2,E3{.....} } Qns: here override of methods occurs or not,ore else wil give any compilation error or run properly..plz tell me briefly whts happening with the above codes....

4 Answers   Quinnox,

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What is an infinite loop?

2 Answers  

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How a class can implement an interface?

5 Answers   SysArc,

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how can you retrive information from database by using hashmap/arraylist ,plz explain with example briefly?

1 Answers   Satyam,

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How can final class be used?

5 Answers   Accenture, Wipro,

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How static variable work in java?

0 Answers  

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How do you make an arraylist empty in java?

0 Answers  

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What are basic keywords?

0 Answers  

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What is a reflection package?

2 Answers  

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Can a set contain duplicates?

0 Answers  

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