How does singleton class work?
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Class c implements interface I containing method m1 and m2 declarations. Class c has provided implementation for method m2. Can I create an object of class c?
When should I use abstract classes and when should I use interfaces?
Explain the difference between extends thread vs implements runnable in java?
What exactly is methodology?
what is filters and its use?
how to handle exceptions in core applications?
What is collections framework?
What is the difference between set and list?
Can a abstract class be defined without any abstract methods?
Explain the difference between intermediate and terminal operations in java8?
Why are the objects immutable in java?
Why isn’t there operator overloading?