10 Not to Avoid Points while Learning Java

If we talk about object orientation, it includes Java one of the best object-oriented languages which is used for mobile and web applications and which is developed by Sun Microsystems. It is a platform independent language because it can be run on different platforms like Mac, Windows, Linux etc. Here are some important points which one shouldn’t avoid while learning Java course in Delhi

Important Points of Java 

1. Java is not a Multiple Inheritance Language

It does not support multiple inheritance which means one class cannot inherit multiple classes but it supports hierarchical inheritance which means one class can have two extended child classes.

2. Overriding in Java

It means that Java is providing the ability to child class by different implementations of the superclass. When subclass has the same parameters, same name and same return type of its superclass then it called as overriding. Overriding can be known as Run Time Polymorphism. 

Know Some Rules for Method Overriding? 

1) Access modifiers must be used in priority fashion which means if a class is protected then it cannot be private it only can be public in override.
2) The final methods in Method Overriding cannot be done it shows an error.
3) The static method can only be used to hide if and only if the supper class and subclass both methods are static.
4) Overriding of private methods cannot be done because of restrictions during the compilation time. 

3. Method Overloading

Which means having the same name as the method but different parameters, this can be achieved by changing the number of arguments and changing the data type of the arguments.
It helps with the enhancement of the readability of the program.
Java main method can also overload the.

4. Abstraction 

Abstraction in Java it uses to hide the delicate functionalities of the program and only show the important things to the user.
For example, when we send the SMS we only know the text in SMS and we don't know the functionality of sending SMS.
Abstract Classes cannot be instantiated, it only can be extended or method implemented.

5. Java Packages

These are of two types one is user define and build in packages.
Swing, net, io, util, SQL,  util, lang, awt,  javax etc. are some Java Build-in packages. It is helpful because it avoids naming collisions, provides protections. Java Packages and interfaces are used to categorized classes in Java.

Know the Running Process of Java packages? 

To compile use –  javac -d. filename.java
To Run the Java program using- Java package_name.filename
Here, javac command use for compiling the Java file, -d it tells to Java compiler where to place the class files.
There are three ways to import the Java packages from outside of the classes-
1) import package.*
2) import package_name.classname
3) fully qualified name
The standard way to define the Package Name must be- domain.company.package

6. Bindings in Java

In Java, method body and calls can be interconnected and that is known as Bindings of Java.
There are two types of Binding like-
1) Static
2) Dynamic
Static Binding- In Java, Static binding is also known as Early Binding. If any methods have static, private, final.
When the type of Object is determined by the compiler then it is known as binding in static.
Dynamic Bindings- When the type of an object determines at runtime.

7. The instance of operator

It is a type of operator which use to compare that a specific object is of which type and after comparing that it returns true or false.

8. Java Swing 

These are light-weighted and platform-independent components. Swing is a part of Java Foundation Classes (JFC) which is used to create window-based applications.

9. Java Applet 

Useful at the client side because it uses to create dynamic content on web pages.It has various advantages like consuming less response time as it is a server-side language.There are two ways to run an applet i.e. by the use of HTML file and second is AppletViewer which also use for testing purpose. It uses in Gaming and animations mostly.

10. JDBC

Java is used to connect and execute a query on databases which is a Java API. It uses JDBC drivers to build connections with databases.

History of JDBC

Before the JDBC, ODBC API used with the database which uses ODBC drivers. ODBC has written in C language which is not secure and platform dependent so, for JDBC has developed its own API which uses its own drivers which are written in Java language. JDBC is used to handle the database activities and perform various activities like Connect, Execute and Retrieve.
Java is a language which is based on Object orientations, which is platform independent and widely used. Java uses inheritance, Overriding, Overloading, Abstraction, Packages, Binding in Java and some more important like Instance of the operator, Java Swing and JDBC. 
So, you need to grasp all the essential perceptions and fundamentals of Java very profoundly and for accomplishing such type of in-depth learning joining finest Java Training Institute in Delhi is decidedly recommended.

If you are looking for an ideal training institute for Java training then ADMEC Multimedia Institute would be perfect place for you. Joining ADMEC will not only boost your self-assurance level and develop your profile as Java pro in no time. 

10 Clear-cut Differences between Core Java and Advanced Java

 History of JAVA

• It is a set of software that developed by Gosling in Sun Microsystems later acquired by Oracle.
• Gosling attempted to modify and extend C++ but soon he created a new language, which was called Oak, after the tree that stood outside the office and the project named as Green Project.
• Highly interactive devices are built by the company and get the proposal for set-top box, which changed their target and this lead to a generation of new language.
• In 1994, Sun Microsystems renamed to JAVA because Trademark research revealed that Oak is used by Oak technology.
• In 1995 the First Version of Java 1.0 was released, which guarantee "Write Once, Run Anywhere" that means write the code once and can be Run at different platform.

Working of this Programming Language

• It is a programming language which converts code into Byte code with the help of Java Virtual Machine(JVM).
• It's platform has different programs, and each program provides different capabilities for example JDK (Java development kit) have Java compiler which convert Java code into bytecode.
• The Java Runtime Environment (JRE), with a just-in-time (JIT) compiler, converts bytecode into machine code.
• Java Software Development Kit (SDK) = Java compiler + Java Runtime Environment(JRE)

Usage:

1. Desktop Use
2. Mobile Device
3. Web server and enterprise use

Java is:

• Object Oriented − In Java, everything is an Object. It is not fully Object Oriented because it supports Primitive Datatype i.e. Int, byte, long etc. First object-oriented programming language is Simula.
• Platform Independent - It is portable as it can be run over all operating system.
• Simple − Design of this language is so simple and easy to understand.
• Secure − It is free from unauthorised access and Virus Free Secured systems. Java Authentications use Public key encryption Systems.
• Architecture-neutral - This software development language is architectural neutral as it compiled the code with the help of object file format to make the code executable on different processors.
• Portable − It can run over different Os, hence portable.
• Robust − It automatically Elli mate the error Prone situations on compile time and run time.
• Multithreaded −It is multithreaded because written programs can perform many tasks and this create interactive applications with smooth running.
• Interpreted - The byte code of this programming language doesn't store anywhere. The rapid and analytical development process as the linking is an incremental and light-weight process.
• High Performance − It is high performance with the use of JIT.
• Dynamic − C or C++ is less dynamic than JAVA, whereas Servlet is more dynamic than Java.

10 Clear-cut Differences between Core Java and Advanced Java

• Core is the basic of Java programming technology concept whereas Advance is next advance Level of Java programming.
• Core is used to make general Java application whereas Advanced used to make online applications.
• Core comprises the Single Tier Architecture whereas Advanced is high level Java programming comprises with two Tier Architecture i.e. Client and Server.
• Core is used for developing general Java Desktop application (example system s/w) whereas Advanced is used for developing the web-based application and enterprise application (example irctc.com).
• The Core covers OOPS Concepts, Wrapper Classes, Special Operators, Data types, exception Handling, Stack, Linked List, Queue, Array List whereas Advanced programming covers the Swings, Socket Programming, AWT, Thread Concepts as well as the Collection objects and classes.
• The Core comprises util, lang, awt, io and net packages and started with 'Java.lang' whereas in "Advanced" is nothing but specialization in domains such as web, networking, data base handling and most of the packages in Advanced Java are always start with 'Javax.servlet.'
• In Core we don't have any solutions for dynamic process whereas in Advanced has complete solution for dynamic processes which has many frameworks design patterns servers mainly in JSP.
• Core means "stand -alone" Java application whereas Advanced means Java application that run on servers means these are the web application.
• Advanced is specialization in some domain, as someone in networking, web, DCOM, or data base handling.
• Core is sorted in three sorts:
• J2SE (Java 2 Platform Standard Edition)
• J2ME (Java 2 Platform, Micro Edition)
• J2EE (Java 2 Platform, Enterprise Edition)
• Basically, J2EE is focused on enterprise development and deployment. It contains API for EJB, Servlet, JSP. J2ME is the micro edition used to write applications for handheld devices such as phones or PDA. J2SE is the standard edition which contains classes that provide the basic foundations.
• Java (with a capital J) is a platform for application development. A platform is a loosely defined computer industry buzzword that typically means some combination of hardware and system software that will mostly run all the same software. For example, PowerMacs running Mac OS9.2 would be one platform.
• Core is totally based on conceptual and Advance is practice based language.

Summary:

It is language which is a boon to the Developing technologies. It plays a vital role in creation of webpages, desktop and mobile applications. It is more dynamic, Error Resistant, easy to understand and simple. It is platform Independent, high-level, object-oriented language. 

If you want to learn in-depth concepts and implement them practically, then join one of the best Java Training Institute in Delhi, ADMEC Multimedia Institute. Take a trial session of core java courses Rohini to get proper analysis in a best way about your technology and its bright future! For more information about our advanced java course, get in touch with our counselor at 9811-81-81-22.