Java Training Institute in Chennai

Best Java Training in Chennai - AllTechZ Solutions

         Java-J2ee is an Evergreen Technology and always in high demand. It is also a prerequisite for people wanting to learn android or hadoop or cloud computing. AllTechz Solutions is one of the Best Java Training Institute in Chennai. ATS's Java course helps to cultivate software programming skills in Java by imparting in-depth knowledge of industry oriented programming. AllTechZ is one of the leading IT Training Institute in Chennai. ATS's syllabus include training in various Java tools and products including Core Java, J2EE, JSP, Servlets, J2ME, multi-threading, HTML, Java Script, networking with Java and so on. ATS have expert trainers with long real time experience, AllTechZ Solutions deliver training with practical real time awareness along with the theoretical understanding. students are guided through to training in such a way that they can develop a standalone application using swings by the end of core java training course.

      Why Java?

             *Meets the emerging software development challenges of its time                 *Platform independence

                   1.Run on wide variety of hardware
                   2.Desktop, server-side, embedded
                   3.Easier to develop, administer, maintain

            *Object-oriented approach
            *Built-in security
            *Network mobility (mobile code)

        What is the Java Technology?

              *Java technology is:

1.A programming language

2.A development environment

3.An application environment

  *It is similar in syntax to C++ and C#

               *Used for developing applets and applications (standalone, server-side, Web services, mobile, embedded, ...)

     The Java Platform Architecture

*Consists of four distinct, but interrelated technologies

      1.The Java virtual machine (JVM)

      2.Class loaders and class files

      3.The Java programming language

      4.The Java API

    Java 8 Architecture

      

Java Compilation and Execution

The Java Programming Environment

Java Platform Editions

The Java platform has several editions:

J2SE (Java SE)

J2EE (Java EE)

J2ME

J2SE,J2EE, J2ME

       *Java 2 Standard Edition (J2SE, Java SE)

• Used to write standalone Java Applications and Applets

        *Java 2 Enterprise Edition (J2EE, Java EE)

• A set of API’s and server specifications built on top of J2SE
• Used for building Enterprise, Web applications and Web services

       *Java 2 Micro Edition (J2ME)

• A pared down version of J2SE and API’s for wireless and embedded devices

The Java Virtual Machine

 *Main features

• Load class files
• Execute bytecodes they contain

  *Loose features specification

• Use any technique to execute bytecode
• Software/hardware implementation
• Can be implemented on a wide variety of computers and devices

   *VM provides definitions for the:

• Instruction set (virtual CPU)
• Register set
• Class file format
• Stack
• Garbage-collected heap
• Memory area

Garbage collection:

• Checks for and frees memory no longer needed
• Is done automatically
• Can vary dramatically across JVM implementations

The JVM and Host Operating Systems

           *Java methods

• Written in Java, compiled to bytecodes
• Stored in class files (.class)

           *Native methods

• Written in other languages (C, C++, …)
• Compiled to native machine code
• Dynamic libraries

Classes and Class Loaders

            *The “bootstrap” class loader

• Only one
• Part of the JVM implementation
• Loads classes in some default way

           *User-defined class loaders

• Written and compiled in Java
• Installed at runtime
• Load classes in custom ways
• Not part of the JVM implementation

Class Loaders Architecture

Class Loaders

     *Load classes over networks, from DB, …

     *Keep track of loaded classes

• Class namespaces
• Access between class namespaces

      *Advantages

• Security
• Mobility
• Sensibility

Java Class Files

       *Java classes, translated to “bytecodes”

• Stored with .class file extension

       *Platform independent binary format

• Consistent byte order of integers

         *Designed to be compact

• Network mobility

         *Can be downloaded as needed

• Dynamic linking

Classpath

         *The CLASSPATH environment variable

• Third-party and user-defined classes
• Can be overridden using the “-classpath” Java command-line argument

          *Classpath entries can be

• Directories
• Archive files (.jar and .zip)

         *Classes are loaded in the order of appearance

CreatingNew Java Application

• Window a Open Perspective a Java
• File a New a Project
• Choose Java Project
• Choose project name
• Click Finish

Compiling Source Code

        *Compilation process includes:

• Syntactic checks
• Type safety checks
• Translation of the source code to Java bytecode

         *In Eclipse compilation is made automatically

• As you type, the program is checked for errors and is compiled
• Saving the file (Ctrl+S) forces compilation

Running Programs

         *Running process includes:

• Compiling (if project not compiled)
• Starting the application

          *You can run application by:

• Using Run As->Java Application popup menu

Debugging The Code

          *Debugging process includes:

• Spotting an error
• Finding the code that causes the error
• Fixing the code
• Testing to see if the error is gone and no errors are introduced

           *This process is iterative and continuous

           *Eclipse has built-in debugger

                 It provides:

• Breakpoints
• Ability to trace the code execution
• Ability to inspect variables at runtime

Conclusion

            AllTechZ Solutions is the No.1 Java Training Institute in Chennai. I Think this is helpful structures for analyzing you career's concentrate on your strengths, reduce threats, and take the utmost possible benefit of opportunities accessibility to you.