Get Hired with One of The Best Java Training Institute In Pune

“Get Hired, Not Just Certified”

If not anything else, you must have at least heard the word Java. No wonder it does not require any separate introduction.

Still, for those who are new to the field of computers or are totally unaware, here are some key points about Java programming language.

James Gosling is known to be the creator of Java. He developed the language at Sun Microsystems. Some major characteristics of Java are- it is object oriented, class-based and concurrent. It is known to have very few execution dependencies that make it the first choice for a variety of applications all over the world. Not to tell differently that it is amongst the most widely used programming languages.

What developers’ like the most is the fact that it has the principle of write once, run anywhere. This means that a Java code post compilation can run on all platforms. No need to recompile time and again.

The sole intention behind this was to make you acquainted with the world of Java before you go for a Java class in Pune for further training.

Thus, Core Java training would be your initial step before you move on to the next level. What better place than CRB Tech for Core Java training in Pune?

About CRB Tech Java Training :-

Java training course in Pune will help clear your Java related concepts and thus make you an expertise in Java development. CRB Tech stands amongst the best institute for Java in Pune. This is evident from the fact that we have provided 100% placements to our candidates and speaks for the quality of training we provide.

Therefore, if you are looking for best Java classes in Pune, for your Java coaching, then CRB Tech has to be your first choice. It happens to be the best Java training institutes in Pune.

Why CRB Tech Java Training is best?? Here is Ans:-

CRB Tech’s Java developer course in Pune has a number of highlights that make it stand out from its peer courses conducted at other Java training institutes in Pune. These are as follows:

1. 100% job guarantee:

We practice such high standards in our training and placement activities, that we provide a 100% job guarantee on a legal stamp paper. We boast of it!!! Very few Java training institutes are known to do the same.

2.Placement Records :

Many of our candidates have got placed in renowned companies like Capgemini, Amdocs, Mindgate, Vyomlabs etc. A total of almost 400+ of our students have been placed in this year.

See our students Reviews here:CRB Tech Students Speak

3.LOI (Letter of intent):

We at CRB Tech provide LOI or you can call it a company offer letter at the start of the training itself. So, you have a job at hand right then.

4.Placement clients:

Our association with a number of placement clients provides you with a sea of opportunities while getting your dream job.

5.German language coaching:

German language skill set will help you while getting a job abroad in a country like Germany.

6.Interview calls:

Students undergoing Java language training start getting interview calls from the first month of enrollment itself. Till he or she is placed, calls continue to pour in with no restriction on their numbers.

So, if you are dreaming for such dream companies, you ought to Enroll today for Java Training


Our corporate like infrastructure is one aspect that takes us into the list of one of the best Java training institutes in Pune. Our aim behind providing such an infrastructure is that our students should get a feel of the corporate world, right from their training days.

 8.Focus on industry oriented training:

At CRB Tech, we teach you the skills that are required by the industry. Due to this, it becomes easier for the candidates to adapt to the real time work they do at their jobs. Practical application of the knowledge becomes easier. As our students pass out, they become industry ready.

9.Emphasis on technical knowledge:

As Java is a programming language, having good conceptual knowledge of coding is utmost necessary. Therefore, special attention is given on this, and students are given a lot of programming assignments during their Java classes in Pune. This helps them turn into expert coders.

10.Guidance from industry expert mentors:

At CRB Tech, the best Java institute in Pune, we have on board experts from the industry, that share their knowledge and experience with the students. They also give valuable tips that help to crack interviews.

11.Soft skill training:

Most of the times, this becomes a weak link for the students. Good English communication is necessary when you enter the corporate world. Therefore, soft skill training is given to the students to boost their confidence. Many of our students have benefited from this.

12.Aptitude training and mock interviews:

Aptitude preparation is a part of the training program and it helps the job seeker to crack the hardest of the aptitude tests, when they go for Java jobs in Pune. Mock interviews are also conducted, which give them important tips for cracking the company interviews.


We provide the interested candidates assistance, for their Java Sun certification exam.These were a few highlights of our Java training Pune.

Eligibility criteria for our Java course:

A career in Java programming is promising, and anybody can learn Java as long as:

Any candidate who owns a degree in the field of computer science or at the end of the day, B.E/B.Tech or B. Sc Computers and even masters degree owners are preferred and recommended for this course.

Duration and Financial assistance:

The duration of the training and placement program at our Java developer institute in Pune is of

4 months. The Java classes in Pune run for 7-8 hours on weekdays.

Talking about the financial options:
  • Loan options:

Loan and installment options are made available for payments of fees.

  • Credit Card:

Students can opt the option of EMI payment on their credit cards.

  • Cash payment:

Fees can also be paid in easy cash options.

We Design Special Corporate syllabus for Students:

Lets go through the Java course syllabus over here. It will give you a feel of what all is covered as a part of the Java training class. The syllabus is designed extensively beginning from the basics and gradually progressing towards the more advanced topics.

The module-wise structure and breakup of the Java programming course in Pune conducted by us,

is mentioned below:

Introduction To OOPS:

  • Need of Object Oriented Approach

  • Understanding Object Oriented Approach

  • Understanding Objects

  • Object Characteristics

  • Object Model

  • Major Pillars And Minor Pillars

  • Group Discussion

Introduction To Java And SDE:

  • Introduction To Java Programing Language

  • Java History

  • Java Features

  • Hello world Program

  • Introduction To Eclipse

  • Simple POJO & this Keyword

  • Group Discussion

Language Fundamentals:

  • Java Literals, Keywords, Identifiers

  • Java Datatypes

  • Type Casting

  • Operators

  • Flow Control Structures

  • Looping Control Structures

  • Scanner Class

  • Arrays

  • Foreach Loop

  • Group Discussion

Introduction To Classes And Objects:

  • Classes, Objects And Instance Variables

  • Constructors

  • Object Instantiation And Reference Variables

  • Static Variables And Methods

  • Anonymous Block, Static Block

  • Group Discussion


  • Inheriting A Class

  • Super Keyword

  • IS-A ,HAS-A Relationship(Containment)

  • Object/Reference Casting

  • Object Class

  • Static And Anonymous Inner Class

  • Group Discussion


  • Method Overloading

  • Method Overriding

  • Method Hiding

  • Abstract Method

  • Abstract Classes

  • Final Keyword

  • Group Discussion

Garbage collection:

  • Understanding Garbage Collection

  • Finalize Method


  • Inheritance And Diamond Problem

  • Need For The Interface

  • Understanding Interfaces

  • Extends And Implements

  • Abstract Class Vs Interface

  • Instance Of Operator

  • Group Discussion


  • Creating Packages

  • Using Multiple Packages

  • Java Packaging Structure

  • Access Specifiers

  • Static Import

  • Group Discussion


  • Understanding Reflection

  • Using Reflection

  • Important Classes In java.lang.reflect


  • String Class

  • Interned Strings

  • String class Vs Interned String

  • String Constructors And Methods

  • StringBufffer Class

  • StringBuffer Constructors And Method

  • String Vs StringBuffer

  • StringBuilder Class

  • Group Discussion


  • Understanding Exceptions

  • Exception Hierarchy

  • Handling Exceptions

  • Blocks And Clauses

  • Throw And Throws Keywords

  • Checked And Unchecked Exceptions

  • Custom Exception

  • Group Discussion

Wrapper classes:

  • Need Of Wrapper Classes

  • Wrapper Classes For Primitives

  • Wrapper Classes Hierarchy

  • Wrapping And Unwrapping

  • Strings And Wrapper Classes

  • Autoboxing And Unboxing


  • Introduction To Collection Framework

  • What Is Framework

  • Collection API

  • Generic Collections

  • ArrayList Class

  • LinkedList Class

  • Group Discussion

  • HashSet,LinkedHashset,TreeSet

  • HasMap,LinkedHashmap, TreeMap

  • Usage Scenarios

  • Hashcode and equals method

  • Comparable And Comparator Interfaces

  • Legacy Collections

  • Some Other Important Classes(Date,Arrays,Collections,etc)

  • Group Discussion

GUI and Swing Basics:

  • Introduction to AWT

  • Introduction to Swing

  • Difference between AWT and Swing

  • Event

  • Handling Events

  • Listener interface and adaptor classes

  • Group Discussion


  • Process,Thread, Context Switching

  • Multiprocessing Vs Multi threading

  • Program As An Single Thread

  • Creating Thread By Extending Thread Class

  • Implementing Runnable Interface

  • Group Discussion

  • Thread States

  • Synchronization

  • Inter thread Communication

  • Demon Thread

  • Thread Group

  • Group Discussion

File I/O:

  • Understanding Stream And It’s Advantages

  • IO Hierarchy

  • Input Stream And Output Stream Classes

  • Filter Streams

  • Buffered Streams And Data Streams

  • Readers Hierarchy

  • Serialization

  • Some Other Important Classes(File)

  • Group Discussion


  • Undersanding JDBC

  • JDBC Drivers


  • JDBC Type 1

  • JDBC Type 4

  • Prepared Statement

  • Callable Statement

  • Working with multiple databases

  • Batch Updates

  • ResultSet and Database Metadata

  • Group Discussion


  • Annotations Overview

  • Built In Annotations

  • Custom Annotations

  • Group Discussion

Java Updates:

  • Enum With Methods (Jdk 1.5)

  • Navigable Maps And Navigable Sets (Jdk 1.6)

  • Varargs (Jdk 1.5)

  • JDBC 4.0 features (Jdk 1.6)

  • String in switch (Jdk 1.7)

  • Multiple exception handling, Try with resource (Jdk 1.7)

  • Lambda expression (Jdk 1.8)

  • Pipelining and Streams(Jdk 1.8)

  • Date and Time API(Jdk 1.8)

  • Default method(Jdk 1.8)

  • Group Discussion

What are you waiting for? Book your seats in one of the best Java courses in Pune, now !

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5 Java Anomaly Detection Tools You Need To Know

There are lots of reasons due to which application failures happen and for each possible sources there are tools for errors like log management tools, performance monitoring solutions, error trackers and so on that help in addressing each of the possible sources. There are lots of noise in the data that these tools collect. How to understand the importance of a data? Now you can see the various tools for anomaly detection in java and predicting the anomalies.

1) X-Pack

To the ELK Stack X-Pack is an extension and that provides anomaly detection. For helping the users understand the nature of their logs it uses algorithms to check or detect their unusual activity. With respect to its data source, the package relies on logs and it lets the users to know how metrics are specific and their effect with the product and how the users get to know about it.

Key features:

Inside the Elasticsearch of log data and metrics anomalies are detected.

Security issues can be identified by networks monitoring activity and user behavior.

Anomaly log events are identified.

2) Loom Systems

In logs and metrics, an analytics platform for anomaly detection is made with the provision of Loom Systems. In logs, it detects anomalies and also offers operational analytics.

Key Features:

Analysis and automated log parsing from various applications

Resolutions recommended- Relying on the company’s solution database.

Anomaly detection and business operation.

List Of Rules Engines In Java

3) OverOps

In production, OverOps says you when, why and where the code breaks in production. The complete source code is the only tool which offers variable state across various call stack for various errors and let you detect proactively at the time new errors are given the application.

Key features:

Variable state and code into full visibility state for automatic reproduction of errors.

Critical errors and new proactive detection by code release

Log files with no Java agent that doesn’t have any reliability.

Any StatsD complaint tool working for custom anomaly detection visualization.

There are no configuration and code changes for installing in 5 minutes through On-premises, Hybrid, SaaS.

A dark theme and a badass dashboard.

How To Begin With Java Machine Learning?

4) Coralogix

In log data the Coralogix clusters and gets to know about similarities. Common flows and tools focus along with detecting the log messages that are attached to them, and when there is no expected outcome with the action then it will be alarming.

Key Features:

Loggregation- Summarize and bundle the logs that have similar patterns.

Flow anomaly- detection of anomalies and identification of connected actions inside them.

Version based anomalies- Anomalies specified that only with the presence of a new version of user products was deployed.

5) Anodot

With relevant analytics for the users Anodot offers an anomaly detection system with the relevant analytics for the users. In databases of any type their target is on detecting anomalies along with anomalies identification in business related data.

Key features:

Grouping and behavioral correlation of similar logs

For offering anomaly detection business data anomalies is detected for marketing campaigns, clicks and performance indicators.

Alerts handling- By grouping similar anomalies into one alert it reduces the noise.

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Best Java Training Course

Define Java :

One of the frequently and commonly used programming languages is Java and it enables the programmers for writing codes with the most powerful instruction sets provided by Oracle Inc. It is considered as one of the most power codes using instruction sets provided by Oracle Inc. The syntax is the set of rules that Java uses. There are higher levels of instructions which are translated into machine codes after the program has been written, by JVM that computers can comprehend and execute.

Java training course is more than enough for you to make your career with these opportunities.

Career Opportunities:

This is how your career would start:

  • Java Video Game Programmer

  • Java Web Developer

  • Java Webmaster

  • Java Developer

  • Web Software Engineer

  • Big Data Developer

  • Cloud Computing

Read More  :  List Of Rules Engines In Java

Gathering knowledge, skills, and competencies refer to training. There are unique goals of enhancing one’s capacity, performance, and capability. It is a platform independent, famous robust, secure, multithreading relying on the higher level programming language. It is secure, robust, and famous, platform independent and a higher level programming language.

A knowledge of Java is more than enough for the candidate to become a professional as a Java developer. You can find lots of frameworks available in which the candidate can enroll with Struct, Hibernate, web services, Springs, etc. Other than that the employee can make their profession as Android developer, big data developer, software tester, cloud computing, database administrator.

There are wide ranges of career opportunities for the candidates like Java developer ( software developer), big data developer (Hadoop), cloud computing (Salesforce), a database administrator ( Oracle MySQL), software tester (Selenium), etc. Thus a Java course would be helpful for the candidate to become a professional in this field.

Frameworks In Java :

1. Spring Framework :

An open source Java application framework called as Spring makes use of inversion of control (IOC) container for the Java platform. With the help of any Java application, the same framework can be used lots of extensions are available for constructing web applications above the Java EE platform. It is very famous in the Java community as an alternative to, a replacement for, or an addition to the EJB model. You can find spring framework with inversion of control (IOC), Aspect oriented programming (AOP), Transaction Management (TM), Model View Controller (MVC).

Read More :  Get To Know About The Best Java Frameworks Of 2017

2. Hibernate Framework :

An open-source ORM (object relational mapping) called Hibernate for the Java programming language is the main framework of JDBC. The mapping of an object-oriented domain model is offered by this framework to a relational database. The shortcomings and builds of the better source is overcome by Hibernate. This framework feature is Java classes mapping to database tables and Java types to SQL.

3. Struct Framework :

For developing Java based web applications, Strut is the most popular framework used. Apache Software Foundation established the Struts by the open source project. Depending on Model View Controller (MVC) architecture, the Struts Framework is based. An action class is invoked by the controller at the reception of the request. The model is consulted by the action class to examine or update the state of the application.

For more information join the Java training to make your career in this field.

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Get To Know About The Best Java Frameworks Of 2017

Most of the Java web developers have several Java Web Frameworks available for them. Here you can see the best and the latest Java Web Frameworks for 2017. What do you understand by web application framework?

A web framework or web application framework (WAF) is a software framework which is significant for the development of various web applications like web resources, web APIs, and web services. During the process of web development the daily activities can be alleviated by web framework.

Spring MVC (Model View Controller)

As a layered J2EE/ Java framework, Spring MVC is a combination of specially applied sciences. For a broad range of perception it is quite appropriate. Lots of new innovations and changes were welcomed by Spring MVC especially after its design and expansion. For the purpose of configuration and development of web applications it offers a useful toolkit for development. There are lots of security projects that you can use it for. Among other programmers spring is very much famous for its well developed ecosystem. There are lots of add-ons like SOAP services, REST APIs, and security authentication.

JSF -(JavaServer Faces)

Java’s net utility framework, JSF also has Oracle support. Although it might not be the best framework for Java development, it has easier ways of using because of Oracle supplied documentation. There is no extra dependency on JSF if you need EE environment in Java. A wonderful magic wand is none other than tools and rich libraries and that may back you up to the application’s complexity. Server pages of Java is used by JSF and it can back up various technologies of Facelets and XUL.

 Top 4 Java Web Frameworks Built For Scalability


Best Java Web Frameworks for 2017 are made by Struts and it is a framework to develop the web application base. For co-operating to solve the problems of a unique type this framework is used and it is a set of interfaces and classes. MVC pattern is the basis of this function. A new framework for numerous Java applications and is equipped by Struts 2. The main reason behind it is the combined effort from various communities support. It can also create dynamic responses.


Of course Hibernate ORM cant be ignored while talking about the best Java web frameworks. An important object-relation mapping device for programming language in Java. For a domain model (object-oriented), it provides a mapping framework to one relational database. The object relational impedance can be solved by Hibernate by replacing persistent and direct database.

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Explain ETL Tools In Java

For the process of performing Extraction, Transformation, and Loading, ETL is well known. Lots of sources, and formats have data which are extracted in the process and it converts it into a standard structure, and inputs into a database, web service, machine learning, and visualization. There are lots of shapes that ETL Tools come in like for instance, some run on your desktop or on-premise servers and others run as Saas in the cloud.

Join the java training in pune to know more about this field


Normally used for creating data warehouses from transactional data; Jaspersoft is an open source ETL tool for permitting integration of relational and non-relational data sources. A business modeler for a non-technical view is also included for view of the information workflow and a job designer for editing and displaying ETL steps. There are features like output sources databases, XML, web services, CRM, native connectivity to ERP and Salesforce applications.

2) Data Pipeline :

An ETL engine used for plugging into your software for loading, migrating data, and processing on the JVM is called Data Pipeline. A single API is used or modeled after the Java I/O classes for handling data in a variety of structures and formats. For processing both streaming and batch data with same pipelines. For handling huge amount of data with a less over head and still able to do using multi threading.

Read More :  Understanding JVM Internals.

3) Scriptella ETL :

Written in Java, Scriptella is an open source ETL Tool. Although it has a humble feature set, it permits for data transformations without XML and offers the ability for scripts execution in various different languages along with SQL, Velocity, JavaScript and JEXL.

4) KETL :

Built on a multi-threaded XML architecture, KETL is a production ready tool and is package independent notification tool. Java based data integration tool, data management, security are some of the main features of KETL.

5) Apatar ETL :

Relying on Java, Apatar is an open source Etl. Single-interface project integration, bi-directional integration, platform independence, non developers are some of the feature set it includes. There are wide range of applications and data sources like MS SQL, Oracle, JDBC and it has the ability to work with these.

Read More : What are the Latest Technology in Java API?

6) Apache Crunch :

The process of writing, testing, and running is made easy and the Apache Crunch is an open source Java API. The tasks are in rapid speed and it runs on top of Hadoop MapReduce. Data joining and integration are some of the instances of these tasks. Although its design doesnt fit into a relational model like serialized object formats, and series.

7) Cascading :

For data processing, cascading is an open source Java library. For solving business problems, API offers you a wide range of capabilities. A data integration API is offered by the tool and you can construct your own taps and schemes. Reading and Writing of data can be supported by Cascading the wide range of external sources. 

8) Apache Oozie :

For scheduling Apache Hadoop Jobs, a java web application called Apachie Oozie is used. A scalable and a reliable tool for performing on a single logical unit by integrating sequentially with multiple jobs. Job scheduling is also supported by Apache Oozie for specific systems like shell scripts and Java programs.

Read More :  Java API copyright-ability is questioned

9) Data Sift :

A powerful data validation tool and transformation framework is nothing but Datasift. With the purpose of targeting enterprise software development. The ability to customize any feature with respect to your need is the key feature over here.

10) Talend Open Studio for Data Integration :

Offering a wide range of data integration solutions, Talend is an open source tool. A drag and drop feature set. For connecting large volume of connector application help in integrating with database, web services, and mainframes.

Java Jobs in Pune are always available for you to become a professional.

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List Of Rules Engines In Java

Here are few list of rules in Java that you need to know and for more details join the Java programming course in Pune to make your career in this field.

1) Overview

Here we are going to talk through some of the most famous rule engines for Java. Inside mission-critical applications, the maintenance process of business logic got too tough. For easing the development the business rules can be used and maintenance by splitting business logic from the source code.

2) Drools

Business Rules Management System (BRMS) or Drools solution can combine with jBPM, a Business Process Management tool for standardization of process, tasks, events activities, etc. If you want to know more about Introduction to Drools then you can look in in the integration with Spring topic.

Java Spring Framework

3) OpenL Tablets

A business rules management system also called as OpenL Tablets is a business rule engine relying on the Excel decision table. There is a familiarity to business users with respect to the business users and it connects the gap between business users and developers.

4) Easy Rules

Offering a lightweight and POJO based framework for defining business is Easy Rules with Simple Java. From the primitive ones and using the pattern that is composite and all these can be done from the creation of complex rules. It has a contrast framework to the most traditional rules engines, and it has no touch with the XML files or any Domain Specific Language. For the developers the Easy Rules can be handy to create and maintain applications. There is a use of annotation-based classes and methods for business logic injection into the application.

How To Begin With Java Machine Learning?

5) RuleBook

For leveraging Java 8 lambdas, Rulebook is a Java framework and for defining the link of Responsibility pattern using simple BDD approach. There are some RuleBook similar to many rule engines. For reading data by the rules which is supplied to rules by data of one type, there are rule books with decisions.

Join the best Java classes in Pune to make your career in this field.

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Explain The Concept Of Java Threading

In this concept called Java Thread, we are going to refer about two basic units of execution Process and Thread. Java threads also has concurrency programming concerned with it. For more information Join the Java training institute.

1) Process

Program or Application is the view of the self possessed execution environment called the process. There are multiple process inside the program. There are different classes and programs called process and the Java runtime environment runs as this.

2) Thread

Lightweight process is the other name for Thread. For creating and existing in the process there are only less resources required by the process and the process resource is shared by the threads.

Read More :  Java Training Institute

3) Java Thread Example

Main Thread is the only thread that every Java application has. Like memory management, signal processing, system management there are lots of Java threads running in the memory. The first Java thread also called as main is considered from the application point of view and there are multiple threads that can be created.

In a single program if there are two or more executing concurrent threads called Multi threading. Only one thread can be executed at a time and time slicing is the OS feature for sharing processor time between threads and processes.

Advantages of Java Thread

1) When compared to processes, Java threads are less in weight and for the resource creating a thread, less time is required.

2) The cost is less in context switching between threads when compared to processes.

3) When compared to process communication, thread intercommunication is quite easy.

Read More :  Trends In Java Tools and Technologies

Runnable Vs Thread

If there is more functionality offered than simply running as Thread, you need to apply Runnable Interface for offering a method to run it as Thread. Thread class can be extended if you need class only goal for running as Thread.

Java aids implementing lots of interfaces and therefore implementing Runnable is preferred. There is a possibility of extending other class if you can extend Thread class.

Thus join the java training class to make your career in this field.

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How To Begin With Java Machine Learning?

Java machine learning and the best tools to get started with

Join the Java courses to make your career int his field.

Although Java is present ancestrally today most of the talk is about artificial intelligence and machine learning. With implementations in any new emerging technology there is no secret hidden to researchers and scientists. Here you can find an overview of the main Java machine learning frameworks and express how good it is to get started without the wheel reinvention and algorithm creation from the basic.

Here are few simpler things to highlight 3 projects for helping you get started:

1) Deeplelearning4J (DL4J)- Distributed and commercial-grade, open source, deep learning library for JVM.

2) BID Data Project- For enabling fast collection of patterns, large-scale machine learning and data mining.

3) Neuroph- Object-oriented neural network

1) DL4J- Deep Learning

For assisting you a tool called DL4J is made in the process of deeply configuring neural networks and are made of multiple layers. A deep sense of learning brings into the JVM along with fast prototyping and customization with target on more convention than configuration. People who are already needing the theory for creating and use neural networks that are deep and for them this tool is used. For solving specific problems involving lots of amounts of data and neutral net property customization. Java is the programming language used for writing it and therefore it is compatible with any JVM language like Clojure, Scala or Kotlin and it combines with Spark and Hadoop.

5 Factors Why Java Professionals Should Know Hadoop

2) BID Data Project

People who are dealing with large amounts of data and are sensitive towards performance, the project called BID Data is made for such people. A collection of hardware, design patterns, and software for enabling fast and large-scale data mining. The BIDMach is the first library for holding records for various common machine learning problems on single nodes or clusters. It can be used to manage data sources, distribute and optimize data over CPUs or GPUS.

There are of famous machine learning algorithms and the team is focusing on development of distributed Deep Learning networks, graph algorithms and other models.

4 pros and 4 cons of Java

3) Neuroph

It is a lightweight Java framework for developing common neural network architectures. A Java library is offered by the framework along with a GUI tool and can use it for creating and training your own networks in neural in Java programs.

An open source Java library is present in it along with a small basic class with respect to essential neural network concepts. If you are at the start of your career it is good to go with neural networks. Join the Java courses in Pune to make your career in this field.

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Session Tracking Methods In Java

What is a Session?

A conversation between the client and the server is considered a session. A series of continuous request and response are present in a conversation. For more information join the Java developer institute in Pune to make your career in this field.

Reason for a session to be maintained

If you come across lots of request and response from the same client to a server, the server is unaware about the identity of the client as HTTP is a stateless protocol. Therefore a certain session tracking is to be made. Let us look at the solution: while making a request the client should introduce itself by offering unique identifier every time. This method can be achieved using five different methodologies:

  1. User authorization
  2. Hidden fields
  3. URL rewriting
  4. Cookies
  5. Session tracking API

For session tracking in server-side technologies, the first four methods are traditionally used. With the help of underlying technology, the session tracking API method is offered.

Read More:  Java Technologies For Web Applications

1) User Authorization :

For using the web application, users can be authorized in various ways. Username and Password is offered to the user and that is the basic concept for logging into the application. Depending on this the user can be identified and the maintenance of the session can be done.

2) Hidden fields :

<INPUT TYPE=”hidden” NAME=”technology” VALUE=”servlet”>

In the webpages the hidden fields like the above can be inserted and for the purpose of session tracking the information is sent to the server. There is no need for special configuration from the server browser for this type and is readily available for session tracking.

3) URL Rewriting :

Original URL: http://server:port/servlet/ServletName
Rewritten URL:

At the time of request, the url is appended with the additional parameter. Session id or sometimes the user id is the general added additional parameter. For tracking the session it will suffice. The parameter can be kept under track like chain link till there is a complete conversation and there should be surety about the non clashing parameters with other application parameters.

Read More:  Java Standard Edition For Business Solution

4) Cookies :

For session tracking cookies are the commonly used technology. Key value pair of information is the cookie and is sent by the server to the browser. The browser saves it in the client computer space. The cookies is sent along with the request sent to the server during the time of the browser. The cookie can be used for identifying the client by the server.

Create cookie using this snippet code:

Cookie cookie = new Cookie(“userID”, “7456”);

5) Session tracking API :

On the first four methods, Session tracking API is built. For helping the developer to reduce the overhead session tracking. Underlying technology offers this type of session tracking. This is considered as the best among other methods and there is no need for the user for explicit usage of java servlets. Join the best java training classes in Pune.

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Difference Between StringBuilder And StringBuffer In Java

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Two significant classes in Java representing mutable String are StringBuffer and StringBuilder that is the string object whose value can be changed. In Java, String is immutable, if there is any modification or operation done on String object for instance: changing it to upper or lower case, adding character, deleting character or in a new String object, substring all the result. Lots of stress can be applied on the Garbage collector because of this if there is a generation of lots of throws away String instances from your application. Initially String Buffer class and later on Stringbuilder were presented by Java developer. Here in this article you will find the difference between Stringbuffer and Stringbuilder:
1) In Java StringBuffer is existing and in StringBuilder was included in Java 5.

2) Both StringBuilder and StringBuffer provides mutable String meaning add/remove character, substring without making new objects.

3) By calling toString () method, the StringBuffer can be converted into String.

4) equals() and hashcode() method is not over-rided by StringBuffer and StringBuilder as they are mutable and not intended to use a hash key based collection classes eg: Hashtable, Hashset, and HashMap.

Significance Of Abstract Methods and Classes In Java

5) All the methods modifying internal data of StringBuffer is synchronized for instance insert (), append (), and delete(). On the other hand Stringbuilder is not synchronized.

6) StringBuffer is considered thread safe because of synchronization

e.g: without compromising internal data structure multiple thread can call its method but it is not synchronized hence not thread safe.

7) StringBuilder is faster than StringBuffer because it is synchronized. Speed is considered as another side effect of synchronization.

8) The predefined length of StringBuffer is 16 characters. You need to provide the size if you know that the size would be less or more than 16 for avoiding wastage of memory and spending time during resize.
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