Interview Questions - Advanced Java
173.
What is the difference between the prefix and postfix forms of the ++ operator?
The prefix form performs the increment operation and returns the value of the increment operation.
The postfix form returns the current value all of the expression and then performs the increment operation on that value.
174.
What is the purpose of a statement block?
A statement block is used to organize a sequence of statements as a single statement group.
175.
What is a Java package and how is it used?
A Java package is a naming context for classes and interfaces. A package is used to create a separate name space for groups of classes and interfaces.
Packages are also used to organize related classes and interfaces into a single API unit and to control accessibility to these classes and interfaces.
176.
What modifiers may be used with a top-level class?
A top-level class may be public, abstract, or final.
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