What is packages in java
Package is a mechanism to group related classes ,interfaces and enums
in to a single module.
Package can be declared using the following statement :
Syntax : package <package-name>
Coding Convention : package name should be declared in small letters.
package statement defines the namespace.
The main use of package is
1) To resolve naming conflicts
2) For visibility control : We can define classes and interfaces that are
not accessible outside the classset java
A Set is a Collection that cannot contain duplicate elements.
The Set interface contains only methods inherited from Collection
and adds the restriction that duplicate elements are prohibited.java packages example
// import <package> -> Imports the whole package
// import <package>.<class> -> Imports a certain class
import java.util.Scanner;import in java
If you use a package declaration, it must be the first thing in your Java file,
and the import declarations must be put immediately after it.Copyright © 2021 Codeinu
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