Why scanner is used in java?
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When we will use an Interface and Abstract class?
class A { private int i; } class B extends A { private int i; } if I create an object of B class what will be the memory of that object.
Difference between Map & Hashmap
How many static init can you have?
Why is it called buffering?
what is difference between Action messages and Action errors?
Why is java so important?
What is functional interface in javatpoint?
What is matcher in java?
What is meant by class loader? How many types are there?
Explain a few methods of overloading best practices in java?
List java api that supports threads?