A reusable software design solution in general for the problems that are recurrently occuring. Design pattern is not a solution but a description for how to solve a problem in different situations. OOP design patterns establishes the relationships between classes or objects. Design patterns are specifically dealt with problem solving at the software design level.
Please explain and compare fail-fast and fail-safe iterators. Give examples?
Do you know why Java is platform independent?
Explain me when do you use volatile variables?
Explain me how are Annotations better than a Marker Interfaces?
Explain me what is singleton class and how can we make a class singleton?
Tell us what is the marker interface in Java?
Tell me what is the difference between an Iterator and a ListIterator?
Tell us why java is not 100% Object-oriented?
Tell us why do you need to use synchronized methods or blocks?
Explain me what is the difference between HashMap and ConcurrentHashMap?
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