Package

Question 1

What is the purpose of packages in java?

Answer 1

A package is used to encapsulate a group of classes, interfaces, and sub-packages. Often is a hierarchical structure of storing information. Packages also provide access protection, and removing naming collisions.

Question 2

What is java.lang package?

Answer 2

This package contains all the classes that are fundamental to the design of the Java Programming language. The most important class in this package is Object class.

Question 3

What is the most important class in Java?

Answer 3

This is an open-ended question, but it is often considered that the Object class is the most important class in java as it is the root of all classes.

Question 4

What is a static import in Java?

Answer 4

Normal import allows us to import classes from packages without using the package qualifier, Static import allows us to import static members from a class without using the class qualifier.