Best answer: How do you create a package explain about the access protection in packages?

What is Package How do you create and access a package?

How to Create a package?

  1. Choose the name of the package.
  2. Include the package command as the first line of code in your Java Source File.
  3. The Source file contains the classes, interfaces, etc you want to include in the package.
  4. Compile to create the Java packages.

How do you create a package?

To create a package, you choose a name for the package (naming conventions are discussed in the next section) and put a package statement with that name at the top of every source file that contains the types (classes, interfaces, enumerations, and annotation types) that you want to include in the package.

How is access protection provided for packages?

The protected access modifier is accessible within package and outside the package but through inheritance only. The protected access modifier can be applied on the data member, method and constructor. It can’t be applied on the class. It provides more accessibility than the default modifer.

How does package provide access protection in Java?

Variables, methods, and constructors, which are declared protected in a superclass can be accessed only by the subclasses in other package or any class within the package of the protected members’ class. The protected access modifier cannot be applied to class and interfaces.

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What is package write the steps to create a package with example?

Creating a Package

To create a package, follow the steps given below: Choose a package name according to the naming convention. Write the package name at the top of every source file (classes, interface, enumeration, and annotations). Remember that there must be only one package statement in each source file.

How do I access import packages?

To import java package into a class, we need to use java import keyword which is used to access package and its classes into the java program. Use import to access built-in and user-defined packages into your java source file so that your class can refer to a class that is in another package by directly using its name.

What is package example?

A package is an organized collection of classes which is included in the program as per the requirement of the program. For example java.io package is included for input and output operations in a program.

What are the types of packages discuss the access protection in package with a program?

The three main access modifiers private, public and protected provides a range of ways to access required by these categories. Simply remember, private cannot be seen outside of its class, public can be access from anywhere, and protected can be accessible in subclass only in the hierarchy.

How do I access a protected method outside the package?

The protected access modifier is accessible within the package. However, it can also accessible outside the package but through inheritance only. We can’t assign protected to outer class and interface. If you make any constructor protected, you cannot create the instance of that class from outside the package.

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What is Interface explain?

In general, an interface is a device or a system that unrelated entities use to interact.