What is fail first in java?
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How does marker interface provides functionality to the implemented class ? or How dose maker interface gets the functionalities as serialization or cloning.
What is thread safe in java?
Difference between comparator and comparable in java?
What is an abstract class and what is it’s purpose?
how many types of Inheritance?
what is the difference between Java Command Line and C command Line?
What are the principle concepts of oops?
What is the difference between an if statement and a switch statement?
What is operator?
Explain what access modifiers can be used for variables?
Program to Find the second largest element in an array.
Explain the difference between extends thread vs implements runnable in java?