Why there are some null interface in java? What does it mean?
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Can we iterate through collection using for loop?
What is the use of accept () method in java?
Where and how can you use a private constructor?
Why is it called boolean?
What are daemon Threads in java?
Does a class inherit the constructor of its super class?if it does, how can you hide that constructor? if it doesnot how can you call it from the sub class?
What programs use java?
What is an abstract class and what is it’s purpose?
Outline the major features of java.
Sample code to retrieve objects from HashMap in sorted ascending order?
How to write custom exception in java?
What is bean? Where it can be used?