Why there are some null interface in JAVA? What does it mean? Give some null interface in JAVA?
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How do you decide when to use arraylist and linkedlist?
What is the difference between superclass and subclass?
If you do not want your class to be inherited by any other class. What would you do?
What is a databasemetadata?
What is the use of a conditional inclusion statement in Java ?
Add a value x to array from index l to r where 0 <= l <= r <= n-1
Explain the pointers in Java?
How to convert a string to long?
What is the use of System class?
What mechanism does java use for memory management?
How many types of operators are there?
why abstract class will have a constructor?