UrbanPro
Login Ask & Answer Success Stories Paid Courses Free Classes Tuition & Classes Fees Write a Review All Categories Help Center
Post your Learning Need Signup as a Tutor
✕

Popular Cities

Bangalore

Hyderabad

Delhi

Mumbai

Chennai

Pune

Kolkata

Gurgaon

Ahmedabad

Jaipur

Noida

✕

Learn Java Training from the Best Tutors

  • Affordable fees
  • 1-1 or Group class
  • Flexible Timings
  • Verified Tutors

Book a Free Demo

Java > Learn Java > if we create a main method in a static nested class...
✕

Search in

if we create a main method in a static nested class then run a program by the command Outerclass$Innerclass why?

Asked by Last Modified  

3 Answers

Learn Java

Follow 0
Answer

Please enter your answer

Trainer

What is interesting here is that when we compile a file that contains an inner class, we actually end up with two class files and not one. Because of the fact that the inner class is technically a separate class, a separate class file will be created for it as well -- which can see with the “OuterClass$InnerClass.class”...
read more
What is interesting here is that when we compile a file that contains an inner class, we actually end up with two class files and not one. Because of the fact that the inner class is technically a separate class, a separate class file will be created for it as well – which can see with the “OuterClass$InnerClass.class” class file. The dollar sign is used to separate the inner class name from the outer class name. But, we will not be allowed to run the command above, because an inner class can not have any static members at all – and that includes “public static void main()”. This is because we would not be able to access the instance variables of the outer class from within a static context of the inner class. And, if there were a static method inside the “inner class” it wouldn’t even be an inner class – it would technically have to be declared with the static modifier and therefore it would be a static nested class. So, this means that the only way that we can access an inner class is by creating an actual instance of the outer class. And this also means that we can only access the inner class at runtime when we already have an instance of the outer class that we can use to access the inner class. read less
Comments
Dislike Bookmark

The static variable can be used to refer the common property of all objects (that is not unique for each object) e.g. company name of employees,college name of students etc. The static variable gets memory only once in class area at the time of class loading.
Comments
Dislike Bookmark

Professional Tutor with 15 years of experience.

After compilation the CLASSfile for inner class iis Outerclass$Innerclass
Comments
Dislike Bookmark

View 1 more Answers

Related Questions

 I want to learn from beginning, please tell me what is the best source to learn (core java)
hi sunaini It is very good that you want to learn programming... I would recommend you c,c++,java and dotnet courses...for becoming a good provrammer.. we provide online training..at lowest prices if...
Sunaini

What is meant by Java full stack and angular Java?
Fullstack development means the combination of UI technologies (client-side) + Backend technology (server-side). UI technology like Angular or ReactJs (Front end technologies). It's all about client-side...
Anuradha
What is difference between C language and Java language?
Java is a purely object-oriented (class based) programming language that's designed to support the philosophy of "write once, run anywhere" i.e. compiled Java code runs on multiple platforms without re-compilation...
Poonam
0 0
5
What are the necessary qualifications needed for a Java tutor?
Degree in computer science and good knowledge of Java.
Darshan
0 0
7
Hi, We provide online instructor-led training. I am looking for Java Teacher/Instructor who can teach java via online. If anyone interested then contact me. I have to start the class from tomorrow onwards.
Hi, If you haven't finalised yet, I am interested in being an instructor. I will be teaching the newest version of Java, Java 10. Experience - 3 yrs as Software Engineer, BTech CSE, teaching Java to school and college students since 3 yrs.
Ujjwal Rana

Now ask question in any of the 1000+ Categories, and get Answers from Tutors and Trainers on UrbanPro.com

Ask a Question

Related Lessons

Java Training Syllabus
Learn JAVA-J2EE Syllabus Core Java - Syllabus aligned to OCA Exam - JDK 8 Object-Oriented Programming (OOPS) concepts: Programming Languages Object Oriented Programming Classes & Objects Pillars...

MindScripts Technologies

1 0
0
Java Overview
Java platform overview Java platform components The Java platform consists of the following components. The Java language Like any programming language, the Java language has its own structure, syntax...
A

Akshay Shende

0 0
0
Mastering in Java Programming
Core java topics What is Java?Execution Model Of JavaBytecodeHow to Get Java?A First Java ProgramCompiling and Interpreting ApplicationsThe JDK Directory StructureUsing Eclipse Data types and Variables What...

Rajeev Majumdar

1 0
0
Java8 Filters and collectors
Lets say we have collection of strings and we would like to filter (remove) out certain strings from collection. We could achive the same in java 7 and earlier versions import java.util.ArrayList; import...

Shiva Kumar

0 0
0
ListIterator Example
public class ListIteratorEx { public static void main(String args) { List<String> li = new ArrayList<String>(); li.add("java1"); li.add("java2"); li.add("java3"); li.add("java4"); ListIterator...
S

Sarthak C.

0 0
0

Recommended Articles

Some Popular IT Courses in Current Market

In the domain of Information Technology, there is always a lot to learn and implement. However, some technologies have a relatively higher demand than the rest of the others. So here are some popular IT courses for the present and upcoming future: Cloud Computing Cloud Computing is a computing technique which is used...

Read full article >

Why Java is the Most Popular Programming Language

Designed in a flexible and user-friendly demeanor, Java is the most commonly used programming language for the creation of web applications and platform. It allows developers to “write once, run anywhere” (WORA). It is general-purpose, a high-level programming language developed by Sun Microsystem. Initially known as an...

Read full article >

Java: An Object-Oriented Language

Java is the most commonly used popular programming language for the creation of web applications and platform today. Integrated Cloud Applications and Platform Services Oracle says, “Java developers worldwide has over 9 million and runs approximately 3 billion mobile phones”.  Right from its first implication as java 1.0...

Read full article >

Top 5 Reasons to Learn JavaScript

Before we start on the importance of learning JavaScript, let’s start with a short introduction on the topic. JavaScript is the most popular programming language in the world, precisely it is the language - for Computers, the Web, Servers, Smart Phone, Laptops, Mobiles, Tablets and more. And if you are a beginner or planning...

Read full article >

Find Java Training Classes near you
Java Training Classes in Bangalore
Java Training Classes in Hyderabad
Java Training Classes in Pune
Java Training Classes in Chennai
Java Training Classes in Delhi
Java Training Classes in Mumbai
Java Training Classes in Kolkata
Java Training Classes in Noida
Java Training Classes in Gurgaon
Java Training Classes in Ghaziabad
Online Java Training

Looking for Java Training Classes?

Learn from the Best Tutors on UrbanPro

Are you a Tutor or Training Institute?

Join UrbanPro Today to find students near you
X

Looking for Java Training Classes?

The best tutors for Java Training Classes are on UrbanPro

  • Select the best Tutor
  • Book & Attend a Free Demo
  • Pay and start Learning

Learn Java Training with the Best Tutors

The best Tutors for Java Training Classes are on UrbanPro

This website uses cookies

We use cookies to improve user experience. Choose what cookies you allow us to use. You can read more about our Cookie Policy in our Privacy Policy

Accept All
Decline All

UrbanPro.com is India's largest network of most trusted tutors and institutes. Over 55 lakh students rely on UrbanPro.com, to fulfill their learning requirements across 1,000+ categories. Using UrbanPro.com, parents, and students can compare multiple Tutors and Institutes and choose the one that best suits their requirements. More than 7.5 lakh verified Tutors and Institutes are helping millions of students every day and growing their tutoring business on UrbanPro.com. Whether you are looking for a tutor to learn mathematics, a German language trainer to brush up your German language skills or an institute to upgrade your IT skills, we have got the best selection of Tutors and Training Institutes for you. Read more

ThinkVidya Learning Pvt Ltd © 2010-2025 All Rights Reserved