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Memory Allocation Methods
What are some Methods for allocating memory for an array?
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Stacktrace
What is "stacktrace" in Java? How can we use this?
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Interface
How do we use interface to overcome multi-level inheritance?
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Volatile Variable
Why a shared variable in Java can be marked as volatile? Give Reason
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Java Virtual Functions
How to achieve Virtual Functions in Java?
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Inheritance
What are the different types of inheritance available in Java?
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Event Adapters
What are event adapters & How they are used?
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Collection SynchronisedList
What is SynchronisedList in Collection?
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Multiple Inheritance
Why multiple inheritance is not applied in Java?
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Does garbage collection guarantee that a program will not run out of memory
Garbage collection does not guarantee that a program will not run out of memory. It ispossible for programs to use up memory resources faster than they are garbage collected.It is also possible for programs to create objects that are not subject to garbage collection
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Reference Variable Size
What is the size of reference variable?
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Run Time Exceptions
What do exception mean in java ? what type of run time exceptions?
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Compiler Unit and Executable Unit
What is Compiler Unit and Executable Unit?
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To what value is a variable of the String type automatically initialized
The default value of an String type is null.
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Serialization
Serialization ignores static variable and transient variables. Why?
Java Interview Questions
Ans