What is a Java package and how is it used?
Package in Java is a mechanism to encapsulate a group of classes, sub packages and interfaces. Packages are used for: Making searching/locating and usage of classes, interfaces, enumerations and annotations easier. Providing controlled access: protected and default have package level access control.
What is need of package?
To solve this problem Java provides a mechanism for partitioning the class namespace into manageable chunks. This mechanism is the PACKAGE. Packages are containers for classes that are used to keep the class name space compartmentalized. The package is both a naming and a visibility control mechanism.
How are packages created in Java?
Creating a package in Java is a very easy task. Choose a name for the package and include a package command as the first statement in the Java source file. The java source file can contain the classes, interfaces, enumerations, and annotation types that you want to include in the package.
Why do we use packages in Java?
Packages are used in Java in order to prevent naming conflicts, to control access, to make searching/locating and usage of classes, interfaces, enumerations and annotations easier, etc.
What is a package give an example?
A package means a complete version of an application software installed on your computer, phone etc. For example, The MS Office package consists of Word, PowerPoint, Excel, Access, Publisher etc. The Adobe package consists of photoshop, flash etc.
Why main method is static?
Java program’s main method has to be declared static because keyword static allows main to be called without creating an object of the class in which the main method is defined. In this case, main must be declared as public , since it must be called by code outside of its class when the program is started.