Explain about object oriented programming and its features?
Difference between arraylist and vector.
How do you override a method?
what is abstract method with example?
Can we access instance variables within static methods ?
What is complexity and its types?
What is the destroy method?
What is string builder?
Is math an abstract class in java?
Difference between Preemptive scheduling vs. Time slicing?
What is the use of 'super' keyword inside a constructor?
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I dont want to use serialzable in java is there any another concept so plz tell me
Explain purpose of sleep() method in java?