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Technical interview questions and answers.
What are virtual functions in java?
Virtual functions are functions of subclasses that can be invoked from a reference to their superclass. In other words, the functions of the actual object are called when a function is invoked on the reference to that object.
What read() returns at end of file in perl?
0. A defined (but false) 0 value is the proper indication of the end of file for read() and sysread().
Explain Inheritance, Encapsulation, Polymorphism and Abstraction in java
Inheritance is the process by which objects of one class acquire the properties of objects of another class. A class that is inherited is c...
Which object is needed to group Checkboxes to make them exclusive?
How to find length of an array in perl?
This will give you the length of an array : $@array
How java’s garbage collector works
The Java garbage collector is a mark-sweep garbage collector that scans Java’s dynamic memory areas for objects, marking those that are ref...
In what context should the value of Swing components be updated directly?
Swing components should be updated directly only in the context of callback methods invoked from the event dispatch thread.
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