How many types of design patterns are there?
What is functional interface in java?
What is consumer in java?
What is method reference?
What is consumer interface?
What are the legal parameters?
What are parameters in a method?
Can inner class extend any class?
What is function and method in java?
Is singleton class immutable?
Is class is a data type?
What are the procedures?
How many ways can we create singleton class?
What are the different types of methodologies?
What are the five major types of reference sources?