Want To Become The Most Successful Java Developer ?

Want To Become The Most Successful Java Developer ? Java programming course is just one step on the road to becoming a successful Java developer. It’s not all. There are many aspects involved in it. We are going to see them one by one in this article.

Java training course in Pune, is what you can look for as a beginning stride.

So, lets see as to what different qualities one should possess, in order to succeed as a developer:

1. Flexibility:

Developers are humans and they might want to work 40 hours a week like every other person. Be that as it may, a good developer is adaptable as far as time – he or she is prepared to work additional hours when the project demands it. Likewise, a developer who can expel or include components and roll out a many improvements (that must be made in light of another person’s errors) and buckle down without protesting is an asset for any team.

2. Passion:

Companies search for developers who are enthusiastic about Java programming language and who trust that it is the #1 programming language. It might sound insane – without a doubt there are a few different languages out there that can carry out the job also. Yet, a developer should be obsessed with Java – such a quality will drive him to discover solutions of complex issues on the off chance that he is stuck.

Additionally, on the off chance that he is enthusiastic, he won’t feel shy in offering new and imaginative answers for development. It will likewise guarantee high quality of Java Application Development. Developers who have their own particular blog or who add to blogs and go into level headed discussions with respect to Java have a decent possibility of inspiring the interviewers.

3. Projects worked on:

Next thing that recruiters and tech pioneers investigate is the experience of the candidate – the sort of tasks he has taken care of. Typically, the prerequisite for an expert developer is for another project that requires capable developer, or for a continuous project where an existing developer is leaving in the trusts of greener fields.

Along these lines, the Java team leaders attempt to find out whether the developer has worked with comparative technologies and projects some time recently. For instance, on the off chance that you are hoping to build up a venture on Grails then it’s ideal to have a developer who as of now has hands-on understanding on Grails instead of having a hero Java developer who will deal with Grails as a debut.

4. Good technical background:

One of the essential things each manager searches for is the Java developer’s technical foundation. A developer with sound technical background with a degree in Engineering in Computer Science or Master in Computer Science is looked for by most organizations.

5. Capability to handle a failure or two:

Developers once in a while get everything appropriate on the first attempt itself. Truth be told, a failure is very nearly a conviction. It’s imperative to discover programming staff that sees errors and bugs as a challenge as opposed to an indication of annihilation. Determination is imperative, and in addition the capacity to begin once again if important, even nightfall of work.

Sample interview question: Have you ever invested hours on a code, just to discover it was the wrong approach? What did you do?

These are a few things that you ought to got to make a successful Java developer come 2017. The career Java programming future is bright for you in the event that you are ready to take efforts.

A Java training institute in Pune, is a place that can help you big time in this goal of yours. We wish you all the best for the same.

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Garbage Collectors In Java and It’s Types

Today, the topic for discussion is Java garbage collector and its various types. Garbage collection is an important concept in any programming language under consideration. Basically, it is related to freeing the memory for further usage. In order to learn garbage collection in a theoretical and practical manner, hunt for best Java courses in Pune.


Regarding the garbage collectors.

In this tutorial blog, we will sail through the different sort of Java garbage collectors accessible. Garbage collection is an automatic process in Java which relieves the programmer of object memory allocation and de-allocation tasks.

Basically, there are four kinds of garbage collectors:

  1. Serial garbage collector.

  2. Parallel garbage collector.

  3. CMS garbage collector.

  4. G1 garbage collector.

Each of these four sorts has its own pros and cons as far as their usage is concerned. Above all, we the programmers can pick the sort of garbage collector to be utilized by the JVM. We can choose them by passing the decision as JVM argument. Each of these sorts differ to a great extent and can give totally unique application performance. It is basic to understand each of these sorts of garbage collectors and utilize it appropriately in light of the application.

In all probability, these are covered as a part of Java training  in detail. We will see over here, the highlights of these

1.Serial garbage collector:

Serial garbage collector functions by holding all the application threads. It is intended for the single-threaded environments. It utilizes only a solitary thread for garbage collection. The way it works by halting all the application threads while doing garbage collection may not be reasonable for a server environment. It is most appropriate for basic command line programs.

Turn on the – XX:+UseSerialGC JVM argument to utilize the serial garbage collector

2.Parallel garbage collector:

Parallel garbage collector is additionally called as throughput collector. It is the default garbage collector of the JVM. Dissimilar to serial garbage collector, this uses many threads for garbage collection. Like serial garbage collector this additionally freezes all the application threads while performing garbage collection

3. CMS garbage collector:

Concurrent Mark Sweep (CMS) garbage collector utilizes numerous threads to check the heap memory to stamp instances for removal and after that sweep the marked instances. CMS garbage collector holds all the application threads in the accompanying two situations as it were,

- while denoting the referenced objects in the tenured era space.

- on the off chance that there is an adjustment in heap memory in parallel while doing the garbage collection.

In examination with parallel garbage collector, CMS collector utilizes more CPU to guarantee better application throughput. On the off chance that we can assign more CPU for better performance then CMS garbage collector is the favored decision over the parallel collector.

Turn on the XX:+USeParNewGC JVM argument to utilize the CMS garbage collector

 4. G1 garbage collector:

G1 garbage collector is utilized for huge heap memory areas. It isolates the heap memory into areas and does gathering inside them in parallel. G1 additionally does compacts the free heap space on the go soon after recovering the memory. Be that as it may, CMS garbage collector compacts the memory on stop the world (STW) circumstances. G1 collector prioritizes the region based in view of most garbage first.

Turn on the –XX:+UseG1GC JVM argument to utilize the G1 garbage collector.

Advancement in Java 8:

Turn on the – XX:+UseStringDeduplication JVM argument while utilizing G1 garbage collector. This enhances the heap memory by expelling duplicate String values to a solitary char[] array. This option is presented in Java 8 u 20.

Given all the over four sorts of Java garbage collectors, which one to utilize relies on upon the application situation, hardware accessible and the throughput necessities.

Continue to update your Java knowledge with Java training  Pune,  which is conducted at a best Java institute in Pune.

you may also like this:

What is the distinction between final, finally and finalize method?

Top 10 Java Interview Questions Only for You

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2016: Java Development Trends That Will Rule!

2016: Java Development Trends That Will Rule!  For those who are planning a career in Java programming; These are some latest trends related to Java development that will inspire you more. A Java programming course can help you in teaching the programming language in detail. So, go for it !


Coming to the trends in Java development. Let’s discuss them one by one.


1. Google continues to stick to Java:

You’ve likely found out about the popular Oracle-Google claim. The two organizations met in court in May, with Oracle looking for $ 9.3 billion for Android’s illegal utilization of Java. In spite of the fact that Google has officially reported arrangements to utilize OpenJDK (Java Development Kit) in the upcoming version of Android, it doesn’t seem as though they will forsake the language at any point in the near future. Of course, OpenJDK will make a typical code base for Android vendors and increase the speed of software development. Why utilize Java by any stretch of the imagination? Indeed, it’s the local approach that makes a killer application and guarantees its awesome performance. A few developers say Google will change to Go (it’s safe and simple) or Dart (ideal for the cloud). It’s an intelligent (and not impossible!) stride for the organization. The question is, to what extent will it take to do all the revising for Android and urge vendors to learn another language?

Focus On Developing Your Java Skills, and Jobs Would Follow!

2. Increasing demand for Java developers:

In under two years, the interest for mobile endeavor applications will grow five times speedier than dev limits. Android as of now rules the smartphone world with 80.7% (contrasted with Apple’s 17.7%) and will proceed with its extension from now through 2020. In this way, Java will remain the main impetus behind mobile application development patterns (if Google doesn’t roll out real improvements to the Android ecosystem). The absence of experienced vendors and expanding hourly rates will drive US and EU organizations offshore (to Eastern Europe specifically).

3. Evolution of Java:

Oracle keeps on dealing with Java 9 which is booked for an indefinite 2017 release. The real objective of the project is to portion JDK into autonomous modules. What’s more, it means developers will have the capacity to utilize only the elements they require for a specific application (no more Archive hellfire, as Saab said). The modules will likewise power connected gadgets, and it takes us back to the Java IoT technology patterns.

4. Java continues ruling enterprise ecosystem:

Here’s a question for the individuals who foresee the inescapable death of the language: why do 90% of Fortune 500 companies utilize Java and have no plans to surrender it? The language offers numerous fabulous libraries which address any issue that may happen amid the enterprise software development process. Java applications keep running on any platform, are very adaptable and process a lot of data. Twitter, at first a Ruby on Rails application, moved to Java (the Blender server) basically in light of the fact that it scales well and handles life data requests (looking for content by hashtags). Another case originates from the Square credit card perusing application that is worked with a few languages (including C++ and Ruby). As indicated by Bob Lee, Square’s chief technology officer, “Java is the only choice when it comes to extreme scalability & performance requirements”.


Both organizations (they don’t typically welcome changes) and quick developing companies utilize the language – and will do as such all through 2016.

5. Internet of Things (IoT):

In the 00’s, Sun Microsystem put 100% of their efforts and assets into the Java EE enterprise platform – to across the board selection of Java-written business software and finish carelessness of desktop solutions. Why do we list IoT among the most recent dev trends in Java? Starting now, it’s one of only a handful couple of technologies that are equipped for signing up the IoT parts together. George Saab (VP of development for Java at Oracle, the company which gained Sun in 2010) trusts Java’s future lies in the Internet of Things – and there’s rationale to it. Many IoT’s difficulties are like those Sun tended to approximately 15 years back (an absolutely new ecosystem, diverse hardware environments, absence of security measures). Mike Milincovich (Eclipse Foundation) offers comparable option. He anticipates that Oracle will build up a total end-to-end storage data solution sooner rather than later, and it would appear that the hold up won’t be long. The Kona Project is right now chipping away at Java APIs for embeded systems. The Java ME platform permits vendors to develop secure applications for the Internet of Things. The language is bolstered by the Intel IoT platform. What’s more, it continues showing signs of improvement.

It looks like Java is really going to have a bright future. Hit while the iron is hot. Be prepared by joining a Java training course in Pune, at a Java training institute in Pune.

You may also like this: 

1. Effective Java Programming Course Material For Self Learning

2. Top 5 Java Programming Courses in the Market

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Introduction To Robotics : Programming A Robot Using Java!

Introduction To Robotics: Programming A Robot Using Java!

This article is based on an Introduction to Robotics and Java Programming. Seems like a new association isn’t it? Let’s check out what it is all about. Meanwhile, the best Java classes in Pune can help you provide Java training.


Lets get on with the topic.

The IntelliBrain-Bot instructive robot is a pre-designed versatile robot, which will permit us to focus our discussion essentially on robotics programming, utilizing the companion Java – empowered robotics software development environment, RoboJDE . Before we begin programming the robot, let s first investigate the mechanical and gadgets segments which make up the IntelliBrain-Bot instructive robot.

If you want to learn a combination of both of these, then, look for best Java training institutes in Pune.

They will provide you the proper training.

Programming the robot:

You will utilize the RoboJDE Java – empowered mechanical technology programming development environment to create, build, load and run your first program. You will likewise learn debugging systems which will help you rapidly resolve issues with your program. Take note of: The RoboJDE development environment ought to be introduced on the PC you will use before continuing with the hands-on exercises in this part. Your lab instructor has doubtlessly effectively dealt with this. Nonetheless, on the off chance that you are chipping away at your own, take after the guidelines in the RoboJDE User Guide to introduce the RoboJDE programming.

Linking your robot to your PC:

RoboJDE speaks with the IntelliBrain-Bot instructive robot through a serial port on your PC. All you have to do to build up an association is interface a link between the port marked COM1 on the IntelliBrain 2 robotics controller and the serial port you will use on your PC..

The process of programming:

As you create programs for your robot you will turn out to be extremely acquainted with your

programming process. You will utilize this procedure over what’s more, over to program the IntelliBrain-Bot instructive robot. Every time you develop another program or roll out an improvement to a current program, you will finish the accompanying steps:

1. Edit, add, modify or remove the steps in your program (utilize the RoboJDE edit window).

2. Build, compile, link and download your program to the robot (click the load button).

3. Test your program (click the run button on the RoboJDE tool bar or press

the START button on the robot).

You have now finished this procedure twice, once when you made your first program, what’s more, again when you added a step to it. You will rehash it numerous more times as you create bigger and more modern projects.

Most proficient developers create programs iteratively, rolling out just a single little improvement at once, testing it, then proceeding onward to the following little change, et cetera, until they have

finished their project. Rolling out and testing numerous little improvements has preference over

rolling out less extensive changes. It is much simpler to altogether test your progressions, and in addition find and settle issues, when you haven’t rolled out substantial changes. By keeping changes small, you focus your attention on one little range. On the off chance that your program doesn’t work after you have transformed it, it will be simpler to determine the issue on the off chance that you haven’t made a vast change. We suggest you take after this approach at whatever point conceivable, making and testing little changes, instead of endeavoring large changes.

A Java developer course in Pune, can teach you these programming nuances that would make you proficient at your job.

Debugging the programs:

The capability to debug programs is a fundamental programming aptitude. You will have the capacity to finish your programming ventures faster and your projects will frequently work better if you set aside the opportunity to create and apply debugging aptitudes. Interestingly, on the off chance that you attempt to program without figuring out how to investigate viably, you will probably discover programming a Programming the IntelliBrain-Bot 27 disappointing background. Set aside the opportunity to break down and comprehend issues. It will make you a superior programmer and you will discover programming more pleasant experience!

A bit of advice, before we conclude. A Java programming course in Pune is a place where you can learn the basics of this language. Java jobs in Pune, is what you can search for once you are done with the course.

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Significance Of Abstract Methods and Classes In Java

Today we are going to talk about Java abstract classes and methods. These are the two basic and important concepts in Java programming. A Java training institute covers these important concepts as a part of its course syllabus. You can learn it from there.


Abstract class:

To make a class of this type, it is declared as abstract. It may or may not have abstract methods in it. Such classes can be sub-classed but not instantiated.

Abstract method:

An abstract method is declared as follows:

abstract void shiftTo(double deltaX, double deltaY);

If a class has abstract methods, then the class itself should be declared as abstract, as in:

public abstract class GraphicObject {

// declare fields

// declare nonabstract methods

abstract void draw();


At the point when an abstract class is sub-classed, the subclass typically gives executions to all the abstract methods in its parent class. Be that as it may, on the off chance that it doesn’t, then the subclass should likewise be declared abstract.

Interface and Abstract class: A Comparison

Abstract classes are like interfaces. You can’t instantiate them, and they may contain a blend of methods declared with or without an implementation. In any case, with abstract classes, you can declare fields that are not static and final, and define public, protected, and private methods. With interfaces, all fields are naturally public, static, and final, and all methods that you declare or define (as default methods) are public. What’s more, you can extend just a single class, regardless of whether it is unique, while you can execute any number of interfaces.

Which would it be advisable for you to utilize, interfaces or abstract classes?

-Consider utilizing abstract classes if any of these apply to your circumstance:

  • You need to share code among a few firmly related classes.

  • You expect that classes that develop your abstract class have numerous regular strategies or fields, or require get to modifiers other than public, (for example, protected and private).

  • You need to declare non-static or non-final fields. This empowers you to define methods that can get to and modify the state of the object which they have a place.

- Consider utilizing interfaces if any of these statements apply to your circumstance:

  • You expect that irrelevant classes would implement your interface. For instance, the interfaces Comparable and Cloneable are executed by numerous unrelated classes.

  • You need to determine the conduct of a specific data type, yet not worried about who executes its behavior.

  • You need to exploit multiple inheritance of type.

A case of a conceptual class in the JDK is AbstractMap, which is a piece of the Collections Framework. Its subclasses (which incorporate HashMap, TreeMap, and ConcurrentHashMap) share numerous methods (counting get, put, isEmpty, containsKey, and containsValue) that AbstractMap characterizes.

A case of a class in the JDK which actualizes the interfaces is HashMap which implements the interfaces Serializable, Cloneable, and Map<K, V>. By perusing this rundown of interfaces, you can induce that an occurrence of HashMap (paying little mind to the developer or organization who implemented the class) can be cloned, is serializable (which implies that it can be changed over into a byte stream; see the section Serializable Objects), and has the usefulness of a map. Moreover, the Map<K, V> interface has been upgraded with many default methods, for example, merge and forEach that older classes that have executed this interface don’t need to be defined.

Take note of that numerous software libraries utilize both abstract classes and interfaces; the HashMap class actualizes a few interfaces furthermore extends the abstract class AbstractMap.

This was about abstract methods and classes. Hope that you enjoyed reading it. For more Java oriented training, search for a best Java institute in Pune or best Java courses in Pune.

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Top 5 Books For Learning JUnit, TDD and Unit Testing In Java

Top 5 Books For Learning JUnit, TDD and Unit Testing In Java : Want to learn JUnit ? Or Unit testing? Then you are at the right place. In this blog from CRB Tech reviews, we are going to discuss about top 5 books that can make you learn these concepts. Reading these would prove to be beneficial for a career Java programming.

Guess what?

These books are in simple language and easy to understand. They can easily be a part of a Java programming course. Let’s look at their details one by one.


1. Pragmatic Unit testing in Java with Junit:

It’s a short book yet whatever penned down is supreme gold. Andy Hunt and Dave Thomas have done splendid work to first present idea and process of unit testing before presenting JUnit. The clarification just moves through and you feel you are learning something by taking after a little number of cases given in this book. Yes, the book is kinda light on cases, yet good thing is that each illustration is clarified extremely well.

By reading this book, you will figure out how to unit test your Java application, how to write good test, what to test, boundary conditions, managing design issues to make your code more testable and testing Gotchas like arbitrarily failing/passing through tests, test working away at one machine yet not on others, tests taking too long to run and so on. To put it plainly, an unquestionable requirement read a unit testing book for Java developers who jump at the chance to unit test their projects.

2. Practical Java Unit testing using JUnit and Mockito – Best book to learn Mockito:

This book likewise has a great deal of cutting edge content for experienced and senior Java developers e.g. step by step instructions to enhance your current unit tests, how to gauge code quality of your tests utilizing code coverage tools, how to stay away from regular errors while composing unit tests in Java, and utilizing mock, stubs and test doubles keenly. It satisfies the desire and completely legitimized utilizing “Practical” word in its title by clarifying tools, practices, and techniques which are essential for any expert Java developer.

Tomek Kaczanowski has done a great job with regards to in clarifying two of the most helpful open source testing system JUnit and Mockito.

10 Avoidable Mistakes Every Beginner Java Developer Makes!

3. Test Driven: TDD and Acceptance TDD for Java Developers:

This is THE best book for Java developer, who needs to learn JUnit as well as figure out how to test Java programs, how to test a specific class, module or method. Lasse Koskela has made a to a great degree great showing with regards to in clarifying TDD alongside basic strategy to write unit tests. As said before that numerous Java programmers do not write Unit tests, not on account of they don’t need or they don’t know JUnit but since they do not have the ability to think of test and code that test for a specific unit of their code.

4. JUnit in Action, Second edition:

In the same way as other comparable titled book e.g. Hibernate in action or Spring in action, this is a complete scope of both JUnit as library and testing Java application as a rule. Aside from presenting JUnit, this book goes past that offer valuable testing counsel on the best way to utilize stubs and mocks to test Java application, composing HtmlUnit and Selenium test for Java web application, testing server side Java code utilizing Cactus, coordinating your JUnit test with build tools like ANT, and Maven, naturally running them utilizing CI and so on.

5. Effective JUnit Testing: A guide for Java developers:

This is another pearl from Lasse Koskela. At this point, You folks ought to definitely know hist perfect work of art Test Driven, which have a said an absolute necessity read the book for a Java developer who needs to learn unit testing, JUnit, and TDD, however more vitally need to enhance himself to make adaptable and strong software. Viable Unit Testing is composed to show you how to write great tests; tests that are brief and to the point, expressive, valuable, and viable. Motivated by Roy Osherove’s untouched exemplary The Art of Unit Testing, Effective Unit Testing book concentrates on tools and practices particular to the Java world. It acquaints you with rising procedures like behavior driven development (BDD) and particular by non-trivial illustrations and show how to include progressed and hearty practices into your toolbox.

So, this was a rundown of the latest books that would enlighten you on these topics. Join a best institute for Java in Pune, for practical based Java training in Pune.

More Related Blogs :

1. Why Do Most People Prefer Career In Java Programming ?

2. Effective Java Programming Course Material For Self Learning


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5 Factors Why Java Professionals Should Know Hadoop

5 Factors Why Java Professionals Should Know Hadoop.

Let’s see the importance of Hadoop in the life of a Java professional. The various aspects related to this, need to be known. Especially for those who want to pursue a career in Java. So, choose your Java programming course in Pune, and start learning. Look for one teaching Hadoop as well.

Guess what?

If you are a Java developer and you learn Hadoop, it will benefit your career big time. So, seriously think about the same.

1. Knowing Hadoop makes you stand out from the crowd:

There is no shortage of programmers who know Java, however then they are only a face in the crowd. A Java expert who learns Hadoop practices himself to go up against the difficulties hurled by Big Data. Learning Hadoop combined with Big Data Analytics will make you emerge from the crowd. Businesses around the globe are not utilizing Hadoop in light of the fact that they need to. They need to move to Hadoop as it bodes well, and they continue chasing for Java engineers that are skilled with Hadoop.

Therefore, to obtain a skill-set in Hadoop, you can look out for best Java classes in Pune or Java courses in Pune; either of the two.

2. Ease to adapt:

You will discover a considerable measure of cases where Java programmers have thought that it was simpler to move to a Hadoop part. On the off chance that you are as of now a Java developer – then you can make the following move to get into a Big Data profession. The Big Data market is just set to become exponentially in the coming years. Enormous Data related innovation like Hadoop, Apache Spark, and so on will quite soon request gifted ability to top off the open job positions. Clearly, recruiters will first take a gander at Java developers who know Hadoop – to fill off these positions.

Is Java Knowledge Necessary To Learn Hadoop?

3. Increase in opportunities:

While Big Data has opened the conduits of new openings for Java jobs in Pune, and elsewhere programming experts taking a shot at different conventional technologies and Java Professionals are making a noteworthy vocation move by selecting to learn Hadoop technologies.

As per Dice’s Open Web, a portal that has practical experience in investigating the hiring patterns, “Java Hadoop” combo is the most looked for after expert skills in the IT business. Once a Java proficient learns Hadoop, he gets to be qualified to apply for a large group of positions like Big Data Architect, Data Analyst, Data scientist etc.

4. Java+Hadoop a deadly combo for pay packages:

Other than quickened career graph, Java experts who learn Hadoop can anticipate preferred bundles over different technologies like UNIX, Teradata, SAP, VB, C++ or generally as a Java proficient.

The way that nine out of the top ten most elevated paying IT salaries are for programming languages, databases and Big Data abilities. Tech pay rates saw an ascent of 3% and IT experts with aptitudes in Big Data related languages were among the most noteworthy pay earners.

So if Java professionals learn Hadoop, then they will turn out to be more significant to their present associations and their joint skills of Java with Hadoop will make them more saleable.

5. Premier IT giants prefer Hadoop experts with Java skills:

A study of LinkedIn profiles saying Hadoop as their skills uncovered that there are very nearly 17000 individuals working in Companies like Cisco, HP, TCS, Oracle, Amazon, Yahoo and Facebook, and so on. Aside from this Java proficient who learn Hadoop can begin their careers with numerous new businesses like Platfora, Alpine data labs, Trifacta, Datatorrent and so forth.

That is not all, other than Tech Company Hadoop technology is being utilized by the Railway and trucking organizations for different purposes like Maintainance Logs, joining GPS data with climate information for safety purposes, computing distances between trains, visual acoustic sensors in brakes, rails, switches and other equipment. Hadoop is likewise utilized in traffic administration get a kick out of the chance to find out auto speeds, increasing speed and deceleration, climate conditions, and so forth.

Now, that you have a fair bit of idea on what skills you must possess for a successful career in this field, you can plan on these lines. Best Java training institutes in Pune are there to assist you in terms of skill development.

Do I need to learn Java for Hadoop?

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Java Training: Top 5 Must Know JDK 5 and 6 Concurrent Collections

It is time for learning some Java programming. That is the reason we are bringing to you this blog related to Java. To learn Java from scratch to expert level, take admission to a Java institute in Pune.

For now,

It’s time for the Java concurrency concept. Let’s see top 5 JDK 5 and 6 concurrent collections that every Java programmer should be aware of

1 ConcurrentHashMap:

ConcurrentHashMap is without a doubt most well known accumulation class presented in Java 5 and a large portion of us are now utilizing it. ConcurrentHashMap gives a simultaneous option of Hashtable or Synchronized Map classes with the objective to bolster larger amount of simultaneousness by actualizing fined grained locking. Different readers can get to the Map simultaneously while a segment of Map gets bolted for write operation relies on concurrency level of Map. ConcurrentHashMap gives preferred versatility over there synchronized partner. Iterator of ConcurrentHashMap are fail-safe iterators which doesn’t toss ConcurrencModificationException subsequently takes out another necessity of locking amid cycle which result in further scalability and execution

2.CopyOnWriteArrayList and CopyOnWriteArraySet:

CopyOnWriteArrayList is a simultaneous option of synchronized List. CopyOnWriteArrayList gives preferred concurrency over synchronized List by permitting numerous simultaneous reader and supplanting the entire rundown on write operation. Yes, write operation is expensive on CopyOnWriteArrayList however it performs better when there are multiple reader and necessity of emphasis is more than composing. Since CopyOnWriteArrayList Iterator additionally don’t throw ConcurrencModificationException it dispenses with need to lock the collection amid iteration. Keep in mind both ConcurrentHashMap and CopyOnWriteArrayList doesn’t gives same level of locking as Synchronized Collection and accomplishes thread safety by there locking and alter-ability technique. So they perform better if necessities suits there nature. So also, CopyOnWriteArraySet is a simultaneous substitution to Synchronized Set. See What is CopyOnWriteArrayList in Java for more points of interest


BlockingQueue is additionally one of better known collection class in Java 5. BlockingQueue makes it simple to execute producer-consumer design pattern by giving inbuilt blocking support to put() and take() method. put() method will block if Queue is full while take() method will block if Queue is void. Java 5 API gives two solid implementation of BlockingQueue in the form of ArrayBlockingQueue and LinkedBlockingQueue, them two execute FIFO requesting of element. ArrayBlockingQueue is upheld by Array and its limited in nature while LinkedBlockingQueue is alternatively limited. Consider utilizing BlockingQueue to take care of producer consumer issue in Java as opposed to composing your won wait-notify code. Java 5 additionally gives PriorityBlockingQueue, another execution of BlockingQueue which is requested on need and valuable in the event that you need to process elements on request other than FIFO

4.Deque and BlockingDeque:

Deque interface is included Java 6 and it stretches out Queue interface to bolster inclusion and expulsion from both end of Queue alluded as head and tail. Java 6 likewise gives simultaneous usage of Deque like ArrayDeque and LinkedBlockingDeque. Deque can be utilized effectively to build parallelism as a part of program by permitting set of worker thread to help each other by taking some of work load from other thread by using Deque twofold end utilization property. So if all Thread has there possess set of errand Queue and they are devouring from head; assistant string can likewise share some work stack through utilization from tail

5.ConcurrentSkipListMap and ConcurrentSkipListSet:

Much the same as ConcurrentHashMap gives a simultaneous option of synchronized HashMap. ConcurrentSkipListMap and ConcurrentSkipListSet give simultaneous contrasting option to synchronized rendition of SortedMap and SortedSet. For instance as opposed to utilizing TreeMap or TreeSet wrapped inside synchronized Collection, You can consider utilizing ConcurrentSkipListMap or ConcurrentSkipListSet from java.util.concurrent package. They likewise execute NavigableMap and NavigableSet to include extra navigational method we have found in our post How to utilize NavigableMap in Java.

That is all on this rundown of concurrent Collection classes from Java 5 and 6. They are included java.util.concurrent package as simultaneous option of there synchronized partner. It’s smart thought to know these Collection classes alongside other well known classes from Java Collection Framework.

To learn these and other Java related concepts, look for best Java courses in Pune.

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How To Create JUnit Test Cases In Java In The Best Possible Manner

How To Create JUnit Test Cases In Java In The Best Possible Manner : Most likely written work great JUnit test cases is an uncommon expertise simply like writing great code. A decent, well thought and elegantly composed JUnit test can keep quite a few production issues amid initial development or later support in Java application.

One feels that a Java programming course ought to include sessions on writing JUnit test cases. For such a course, you would have to look for a best institute for Java in Pune.

Java-training-in -pune


We move on to the JUnit best practices that one should follow to become a pro in this.

1. It’s not essentially conceivable to get 100% code scope, so don’t mean to write unit tests for every method and trifling operations, rather, compose unit tests for a strategy which is probably going to have bugs amid maintenance. Continuously tests core method and core classes which are utilized intensely by various parts of a program. On the off chance that you take after this best practice while writing test, you will be astounded with the nature of code, it regularly result in less bugs amid the formal testing cycle.

2. Coordinate Junit tests with your build script so that with each compile your tests run consequently. Maven and ANT two most well known build technology for Java application gives support to run Junit tests. This is not only a best practice but rather a standard of building Java application. Continuously run test cases while building ventures this checks new code as well as ready with any potential blunder which comes about because of late changes. Once in a while altering a bug developer present another bug on the off chance that you have JUnit test integrated with the fabricate or taking after CI rehearses then you are ideal to get ready to manage them.

3. In the event that a function or a method relies on the order of occasions then ensure your JUnit test covers requesting necessity and my take is to test both sides of the coin implies with right requesting strategy ought to deliver correct result and with erroneous requesting, it ought to throw exception or affirms the alternate operation. Another JUnit best practice which is worth noticing.

5 Reasons Why Java’s The Best Language To Learn

4. Composing trivial JUnit tests like for getter and setter strategy is generally an exercise in futility. Keep in mind that you don’t have freedom to compose a vast number of unit tests either as far as your development time nor while you are building your application. As unit tests run naturally amid build process, they are required to complete early and unimportant unit test just includes time and conceal more helpful case to run later.

5. Keep your unit test autonomous of Environmental data like Database, File System and so forth. The unit test relies on upon environmental data may work in some environment and may not take a shot at other. It’s a smart thought to utilize a precisely picked set of information inserted in experiments and in addition a placeholder technique which can be stopped to database if required utilizing configuration.

6. Utilize accessible apparatuses like DBunit, XMLUnit and Spring test framework based upon your venture and your need.

In Summary code audit and Unit testing is as indispensable as composing great code and great remarks. Thoroughly consider prerequisite while composing test cases and concentrate on scenarios. One trusts these JUnit and testing best practices will help you to create better code.

Hope that you liked this article and it proves to be helpful for you. For a career in Java programming, take the help of Java training in Pune.

More Blogs : 

1. Focus On Developing Your Java Skills, and Jobs Would Follow!

2. Java Jobs In Pune: A Career and Growth Perspective

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5 Pre-requisites For Building Your First Android App Using Java.

5 Pre-requisites For Building Your First Android App Using Java.

Have you thought of building an android app all by yourself ? If not, here is your chance to do so. For learning android app development, you can undergo a Java programming course in Pune. Go for best Java training institutes in Pune.

Coming back to the topic, guess what?

There are 5 things you should know before starting to develop your first ever android application. Let’s discuss these further.

Building an Android application boils down to two noteworthy abilities/languages: Java and Android. Java is the language utilized as a part of Android, yet the Android part envelops learning XML for the design of the application, taking in the concepts of Android, and utilizing the ideas programmatically with Java.

When you learn Java and (XML is truly simple to get used to, and you ought to take in the language as you program your application as opposed to learning it already like you would with Java), you have to figure out how to associate these two utilizing Android standards.

One way to learn this is from best Java classes in Pune.

Android Studio and Eclipse are IDEs, or Integrated Development Environments. You could code Java utilizing different programs that run code, yet if one is not very acquainted with these then they are not prescribed these at all to a starter.

The IDEs compile and run your code with only a touch of a button, not at all like different applications where you would need to compose some code to compile and after that write some code to run. You need to introduce the Android SDK with Eclipse, yet the greater part of the installation procedure is canvassed inside and out on the Android designer’s site.

Android application development.

Now, the five things to know:

1. Learning Java becomes must. There is no other option.

2. Android part includes learning XML for the application plan, understanding ideas of Android and utilizing said ideas automatically with Java.

3. Starters should take the help of an IDE (Android studio is preferred over eclipse).

4. Building your first application is tedious: it won’t occur incidentally. This is not a venture for those searching for a quick result.

5. At the point when stuck on an issue (which will unavoidably happen), switch to Stack Overflow. In the event that no fortunes there, look to the Android Subreddit where there is a useful community.

Now for a total starter, one prescribes YouTube instructional exercises to get the essential idea of how to install eclipse (the Integrated Development Environment, or IDE, for Java) and the Java Development Kit (JDK). It additionally gets the fundamental idea of syntax behind Java concepts, for example, for if statements and loops.

5 Ways To Ensure You Have Written A Secure Java Code.

In any case, from that point on, after you have taken in the very nuts and bolts, one HIGHLY prescribes jettisoning the YouTube instructional exercises for a book or a series of sessions. YouTube instructional exercises all the time don’t give instinct behind vital ideas, which one feels is 100% important on the off chance that you wish to make an Android application.

Android applications are developed utilizing the Java language. Starting now, that is truly your alternative for native applications. Java is an extremely mainstream programming language created by Sun Microsystems (now possessed by Oracle). Came into being long after C and C++, Java consolidates a considerable lot of the effective features of those powerful languages while tending to some of their disadvantages. As yet, programming languages are just as capable as their libraries. These libraries exist to help engineers build applications.

So, get started by first of all doing a Java certification course in Pune, to get Java jobs in Pune.

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