Which is better stringbuffer or stringbuilder?

0 Answers  

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What is super keyword in java ?

1 Answers  

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Explain the difference between abstract classes and interfaces in java?

0 Answers  

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IN java collections we have both interfaces and classes. instead of using interfaces why we can't use classes only like that why we can't use interfaces only. why we need two things interface and class.

6 Answers   Accenture, CTS,

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i don't want fullforms of JDK an JVM i want definitions for them

2 Answers  

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when to use ArrayList and when to use HashMap in webApplication.

1 Answers  

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How do you add an element to a hashset in java?

0 Answers  

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What are different types of inner classes ?

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What is the reason behind using constructors and destructors?

0 Answers   HCL,

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whst is encapsulation?when u encpsulate actually while devoloping code?

7 Answers   Amdocs, MGL,

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What's the base class in java from which all classes are derived?

0 Answers  

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how to create multithreaded program? Explain different ways of using thread? When a thread is created and started, what is its initial state? Or extending thread class or implementing runnable interface. Which is better? : Java thread

0 Answers  

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