Monthly Archives: December 2017

Best Java Exception Handling Interview Questions

1) Explain an exception?

The logical errors are represented by the objects called as exceptions that occur during run time and happens during run time and it enters into the ambiguity state.

JVM creates the objects automatically for representing these run time errors called as Exceptions.

2) Explain the difference between an error and an exception?

Serious problems are indicated by an error called subclass of throwable that is a reasonable application must not try to catch.

A subclass of Throwable is called an error that shows the serious problems of a reasonable application must not try to catch. There are lots of errors with strange conditions.

3) Explain the way exceptions are handled in Java?

With the help of try catch blocks, exceptions can be handled.

For generating the exceptions, the statements need to have try block because when there is an exception shown in a try block it will be assigned with the next exception class object in catch block.

Read More :  Do you know about Exception Handling in Java?
4) Explain the super class of Error and Exception

Throwable.

5.Exceptions are defined in which java package

java.lang.Exception

6.Explain throw keyword in java?

An exception is thrown manually with the help of throw keyword.

For suspending the execution, whenever needed the functionality relies on the user-defined logical condition for throwing the keyword to throw the exception.

7. Is it possible to have try block without catch block?

You can use try block without catch block by using finally block

Try with finally block is assisted by Java

It is quite familiar that block will get to know when there is an exception that happened in a try block, Except System. Exit () will have its execution always.

8. Explain unreachable blocks in Java

Unreachable blocks are regarded as block of statements to which the control cannot reach in any case.

Java doesnot support unreachable blocks.

Read More :  What is Exception Handling in Java?
9. Explain user defined exception or custom exception in Java

Custom exceptions can be defined by us over here by extending the Exception class

A constructor must be written by us for passing the message.

User defined exception in Java.

10. Explain the various ways of print exception message on console

In Java there are three ways to find the details of the exception.

They are:

1. Using an object of java.lang.Exception

2. Using public void printStackTrace() method

3. Using public String getMessage() method.

11. Is it possible to write return statement in try and catch blocks

It is possible to write return statement of the method in try and catch block

For using it there is a need to follow few rules.

12. In finally block is it possible to write return statement?

In finally block, there is a possibility to write return statement of the method.

Read More :  Java Exceptions Handling
13. Explain the difference between throw and throws

User defined exceptions are thrown with the help of throw keyword.

The information about unhandled exceptions of the method to the end user is done with the help of throws keyword and it can explicitly offer this kind of an information.

14. Is it possible for us to change an exception of a method with throws clause from unchecked to checked while overriding it?

Not possible

In sub class, if super class method throws exception then you need to mention the throws with the same class or the sub class exception.

Therefore it is not possible to change from unchecked to checked.

15. Explain the rules for following the overriding in super class method for throwing the exception

If checked exception is thrown by the sub class then the super class must throw the same or super class exception of this.

If checked or unchecked exceptions are thrown by the super class method then it is not necessary to put throws in a sub class overridden method.

In sub class, if super class method throws exceptions then you need to mention the throws for using the same class or its sub class exception.

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Best 10 Spring Boot Interview Questions

In this article, you will 10 Spring Boot Interview questions with answers. Let us see few Spring Boot Interview questions:

1) Explain Spring boot

For making production ready, the Spring boot will make it simple for you and it has an excellent view of developing Spring application quickly. Convention over configuration is followed by it. In easier terms, there is default configuration for lots of Spring projects and there is no need for lots of bootstrap for any spring application.

2) Explain the usage of a boot in your application?

Spring application can be created with spring boot to make it simple as mentioned earlier and it can save a good amount of time and efforts.

Read More :  Java Spring Framework
3) Explain the disadvantages of Spring boot

For turning your old spring application to Spring boot it is not a direct approach and takes a lot of time.

4) How is it possible to override the default properties in Spring boot project?

There are lots of properties offered by Spring boot that can be overridden by giving them with application properties.

5) Explain the running of Spring boot application on a custom port?

In application properties, there is a need to simply put server port properties.

Read More :  An Introduction to Java Spring
6) Explain Spring boot starter and its usage?

There are lots of starters that is present in Spring boot which is a group of convenient dependency descriptors that can include your prom.xml.

7) Can Spring boot be used by us with applications that are not using Spring?

It is not currently feasible. Spring applications are the basis for Spring boot.

8) Explain the configuration name file for you to use in Spring boot?

In Spring boot projects, configuration files are used along with properties. It is quite significant for usage to override various default configurations.

Read More  :  Java’s Spring Framework gets a new competitor
9) Explain the actuator in Spring boot?

The most significant feature of Spring boot is Spring boot actuator. It is used for accessing present state of running an application in production environment. You can find lots of metrics for you to check the present state of the application.

10) How is spring security implemented with Spring boot application?

In Spring boot application there is a usage of Spring security for very little configuration. In pom.xml there is a need for you to include spring-boot-starter-security. You must also create Spring config class for extending WebSecurityConfigurerAdapter and override method for requiring to achieve security in Spring boot application.

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Best Java Libraries For Developers

Currently, there are lots of Java libraries available for you but tried and tested libraries are the most preferred by the developers. Here are few essential third-party Java libraries that developers must understand.  They are free and exhibit wonderful features that are useful for all developers from freshers to professional coders.

1) Commons Math

A free mathematics library offering various numerical analysis, geometry, complex numbers, linear algebra and more is none other than Commons Math. There are statistical and mathematical components with self-contained and lightweight for addressing programming issues like linear equations solving systems, machine learning, curve fitting and much more.

2) LWJGL3

For the purpose of designing Java games, LWJGL 3 (Lightweight Java Game Library) is a cross-platform library. High performance and direct access are offered by this library which is a standalone platform to native APIs for graphics development (OpenGL), audio (OpenAL), and parallel computing(OpenCL) applications.

3) Jsoup

HTML is parsed in Java with the help of HTML parser library in Jsoup to the same DOM like modern browsers. It permits parsing HMTL from a URL, string or file and manipulating HTML elements, attributes, and text. For the purpose of manipulating and extracting data, there are convenient API for the best CSS, DOM, and jquery-like methods. For data extraction, there are several selector syntaxes like Jquery-like and regex.

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4) SWT

For Java, there is an open-source widget library designed called as the Standard Widget Toolkit or SWT. For offering efficient and portable access it was designed with user interface elements of the operating system where it is used. There are lots of development tools from widgets, sample snippets, documentation, and examples.

5) FreeHEP

High Energy Physics is involved for developing applications that are quite a useful library for use. Java code’s sharing and reusability are encouraged by FreeHEP in high energy physics and various other components like a vector graphics, HepRep, PostScript Viewer and much more. Only certain parts can be used by you without the need for an entire library by FreeHEP to decrease the dependencies.

6) Apache Log4j

Loggin is enabled by Java and for this purpose Apache Log4j, a logging library is used without the need for changing the application binary. The log statements are designed by the Log4j package to stay in the shipping code without heavy performance costs.

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7) Jackson

A standard JSON parser library for Java called Jackson is the rapid and user-friendly library which comprised of a suite of data processing tools for Java and JVM like the JSON parser, data-binding library and other data format modules like CBOR, BSON, AVRO, CSV, XML and more.

8) JfreeChart

A robust API is featured by a free Java chart library called as JfreeChart to assist help developers to express professional looking charts on both server and client-side applications. Bar charts, pie charts, Gantt Charts, histograms etc are created by it. There are various output formats like JavaFX components and Swing which is supported by it.

9) Google Guava

There are lots of Java-based projects which have an open source Java libraries called as Google Guava like primitives support, functional programming, string processing, common annotation, etc. The ultimate motto is to make Java more pleasant language by testing preconditions easily and the implementations must be simplified by it for object methods and simplifications of exception and error propagation and examination.

What is Hibernate?

10) Hibernate ORM

Database tables and Java classes can be mapped by the object or relational mapping library called Hibernate ORM. For developing applications the developers are permitted and persistent classes are developed by the data with the help of natural object-oriented idioms.

11) Java WordNet Library (JWNL)

The WordNet relational dictionary is accessed by the JWNL Java API for developing NLP applications. Java generics, dictionaries, and improved database support are assisted by the extended library.

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Explain The New Features In Java 7

There are lots of features introduced by Java 7 in Java programming language and they are trying catch with a resource, String in Switch etc and with the introduction of new file API in Java further there are lots of modifications in Java Development API and apart from that, there are lots minor changes.

1) Permit using String in Switch Case :

In the earlier versions of Java, it was not possible to use String in Switch or a case statement. Since the enum was unveiled in Java 5, the idea for using String in Switch case was present. It was possible to use Enum in Switch case but it is not possible to do the same thing with String. After the entry of JDK 7, String can be used in the Switch case.

Read More :  What are the features of Java 7?
2) Various Exception in one catch block :

It is one of the prime features which bags the thought in your mind when listing Java 7 features. There is a possibility to catch multiple Exception in one catch block in JDK 7. In Java 7, it is called as multi-catch block feature. In Exception handling, a significant enhancement called Java 7 has been made as it will decrease the clutter in Exception handling code in Java.

3) Automatic resource management or ARM blocks :

This feature is similar to the ones in previous Java 7 version called as Automatic resource management (ARM blocks) which also implies try with resource block is another important enhancement in the field of Exception handling in Java. Automatic closing of a resource is allowed by ARM blocks eg: Streams, Files, etc which is unveiled inside try block.

Read More :  7 Java Struts Action Framework Features
4) Fork-Join framework in Java 7 :

This feature is mostly asked in the Java interview questions there is a possibility for Fork join framework in Java 7 but it is an individual JSR. In Java 7 it has been included as a new feature to make it part of standard Java 7 core library. Codes can be written with the permission of Fork join and this benefit of multiple cores is present in modern servers.

5) Diamond operator <> for type interface :

Generics in Java are introduced by Java 5 where the programmers are not happy with the verbose and produce duplicate code which is apt due to object creation of para class in Java and you need to give type parameters in both right and left-hand side. A new Java 7 feature called diamond operator <> offers type interference while making Generic class objects. It is possible to get type interference without the Java 7 usage creating Factory method in Java. Type interference can be achieved easily with the help of diamond operator in Java 7.

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10 Things About String Every Java Programmer Should Know

A special class in Java which is most frequently used is called as String. You can find various things to understand about String in Java when compared to any other class and it is very important to have a good knowledge of various String functionalities for using it properly.

1) Strings do not have null termination in Java

There is a String termination in both C and C++ but it is not the case with Java. In Java, Strings are referred to as an object and is supported by character array. The character array can be retrieved by representing String in Java by calling the toCharArray() method of java.lang.String class of JDK.

2) In Java, Strings are both immutable and final

In Java, Strings are immutable which implies that after creating the string’s content cannot be changed. If at all you use toLowerCase(), toUpperCase() then a new String is created.

3) In a String Pool, Strings are kept

In Java, String is considered as a Special class and in a separate pool, all the String literals are maintained with special memory location inside Java memory more aptly inside PermGen Space. If a new string is created using String literal then the String pool is checked by JVM and if there is a similar object then you cannot create a new object.

Introduction Java String

4) Strings can be compared in Java using equal methods.

The equals method is overridden by String class and it offers a content equality and characters, order and case are the basis for it. You can use equals() to identify whether two string objects are same or not instead of equality operator.

5) lastIndexOf() and IndexOf() are used or matches(String regex) method to search inside String

A convenient method is offered by Java in String class to check if a sub-string or character or a pattern is present in a current String object. The position of character or String will be returned with the use of indexOf( ) if that is present in current String object or -1 and character is not present in String. The methodology of lastIndexOf is the same but it checks from an end.String.match(String regex) is more powerful which permits you to search for a regular expression pattern within the String.

6) To get part of String in Java, Use Substring

Another method is offered by Java String called substring () and it is used for getting parts of String. Start and end index and substring() method must be specified by returning character from the range. From 0, the index starts and continues till String.length()-1. Here the character array backs up the substring.

Do you know the Concept of Java String?

7) + is overloaded for String concatenation

Operator Overloading is not assisted by Java but String is special and + operator can be used to combine two Strings. Int, char, long, or double can be converted with the help of this into String by simply concatenating with empty string “”. With the help of StringBuffer + is internally implemented prior to Java 5 and StringBuilder from Java 5.

8) White spaces from the String will be removed using trim()

From both the ends of the String, trim() method can be used to remove the white spaces in Java Strings. If white spaces are removed with the help of trim() then a new String is returned or else it returns same String. Replace() and replaceAll() methods are also provided by String to replace the characters from String.

6 Points That Prove The Importance Of String In Java

9) With the help of Regular expression split(), methods can be used for splitting String

There are lots of features present in String in Java and it has methods like split(regex) and any String in form can be taken and it can be split too. It is quite useful if you are working on comma separated file (CSV).

10) Sensitive data cannot be stored in a String

Sensitive data like passwords, SSN always gives a threat in String. You cannot remove contents of String because String is immutable in Java and there is a longer duration of their stay in Java heap as they are kept in String pool.

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5 Reasons Why You Want To Learn Mainframe Programming

If you want to become a very good developer then you need to keep in touch with the industry track whether it is Spark, Docker or kendo. Your market value is increased by staying on the cutting edge by enhancing your market value and keep giving gifts to your work and assists you to ignore the blunder of complacency.

1) Enterprise applications are mainframe applications : 

The core business logic and data are present at the world’s biggest enterprise as the primary repository. In any big enterprise, the most significant application purchase the mainframe resources on the rear end and on the front end they are mobile or web or cloud.

The mainframe applications and databases can be best purchased without any contact with them and enterprises can be agile digitally by using agile everywhere and this is the greatest misunderstanding.

You are going to experience a twitch at the rear end for maintaining the balance in the competition especially if mainframe application and data are used at the back end.

There is a need for change although small in the Cobol application logic. Some DB2 database calls are to be coded. Some platform behaviors are to be adjusted to maintain performance SLAs for scaling back-end workloads in step with increasing front-end mobile/web demand.

Read More : Java Is A Dead-End For Enterprise App Development

2) The arrival of agile mainframe processes and tools :

Earlier there was a time when the rapid increase in mainframe development was a difficult task. And arcane green screen tools are worked exclusively by the Mainframe Developers which was an enterprise achieved by hard work on both the tools of the IBM z/Os platform.

Therefore the only way to be on the competition irrespective of tooling and platform knowledge issues is to dedicate yourself completely which implies to cut off ties with all the cloud, mobile or other technology of your interest.

It is not the same anymore. Mainframe DevOps tools now from the main new generation offers the similar graphical look and get the right plugin for an Eclipse IDE.

Built-in intelligence is offered by these new mainframe tools that insulate the developers from PL/I, Cobol, DB2, Assembler, CICS, etc.

Read More :  Java Oracle devops

3) The best-engineered platform :

The understanding of mainframe platform is very poor who understands it through myth and rumor. There are lots of mindblowing works of engineering in the IBM mainframes. There are more than 1.15 million CICS executed by the enterprise mainframes around the world collectively that is equivalent to various Google Searches, Facebook likes, YouTube views and Twitter tweets.

From an economic point of view, there is extreme efficiency in Mainframes. Additional workloads often produce extra incremental costs in the distributed and cloud environments, which consists of infrastructure and staff. It will cost you more in the cloud.

There is a need for optimal security, mega scale, and screaming performance for the use cases and this is the biggest challenge among the developers.

4) Keeping the goals high :

Finances are not the only thing that drives you even if you are a programmer. There is a need for sense and goal in your work. There is no other work like mainframe development which is more mission-driven. Data and mainframe applications offer the foundation for the global economy. For enterprise mainframe development few jobs can look at the magnitude. Global retail, global banking, global insurance all rely on it similar to air travel. To make it easily understandable, if there is a need for having the best positive impact on every line of code on the greatest number of people then the right choice is mainframe development.

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5) The supply and demand monetary value :

It is a familiar fact that mission is everything to drive you but then money for developers are also equally significant who gain knowledge in mainframe programming. The mainframe developers of the complete professional era are right now stepping back because of its retirement. There is a great demand for mainframe development similarly to push up due to the above-mentioned requirement to assist cross applications with a higher frequency of updates to DB2, Cobol, Assembler and various other resources running on IBM z/OS.

This gap in skill has to be filled in some way or the other by the big enterprises. Mainframe-only developers are not required to do so as the development of mainframe can be done in the cross-platform application.

For agile mainframe DevOps skills, large enterprises are required to meet their needs by gaining knowledge of mainframe among their in-house IT staffs and by recruiting contractors with good cross-platform skills that have functional literacy with mainframe DevOps tools.

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Explain the Access And Non-Access Modifiers In Java?

Two types of modifiers are offered by Java. They are: Access modifiers and Non-Access modifiers. The visibility is controlled by access modifiers for using a class or a variable or a method or a constructor. Functionalities are offered by non-access modifiers like synchronizing a method or block.

Access Modifiers In Java :

The visibility of a class or method or a variable or a constructor can be controlled with the help of access modifiers. In Java, there are four different access modifiers in Java.

1) Private:

There is no permission for methods or objects outside the class which is declared private irrespective of a field or a method or a constructor. Even subclass cannot be inherited by private members.

2) Default:

if there is no access specifier defined then it is considered default and they are visible inside the package. And only subclasses are inherited by them. This implies they are not inherited and visible outside the package.

3) Public:

Almost everywhere public members are visible and they are inherited to any subclass.

Read More :  3 Different Modifiers in Java

4) Protected:

The characteristics of public members and default members together combine and are present in protected members it implies that protected members are implied inside the package like default members and they will be inherited by any subclass similar to public members.

Non-Access Modifiers In Java :

There are few other non-access modifiers in Java to offer the functionalities other than visibility. Such modifiers are named as Non-Access Modifiers. There are lots of non-access modifiers present in Java. Here are few non-access modifiers mentioned below:

1) Static:

The static members are declared as common to all instances of a class. Class level members and static members are the same which are stored in the class memory.

2) Final:

A variable or a method or a class cannot be changed after using this modifier. After a variable has been declared to a final variable it cannot be modified. You can override a final method into the subclass and a subclass cannot be created to a final class.

Read More :  An overview of Java Access Modifiers

3) Abstract:

Either by a class or with a method the modifier can be used. This modifier cannot be applied to variable and constructor. An abstract method must be modified in the subclass. If a class which is declared cannot be instantiated.

4) Synchronized:

A particular method’s or a block with multiple threads access can be controlled only with the help of this modifier. If a block or method is declared synchronized then it will permit only a single thread.

5) Transient:

In serialization process, this modifier is used. A transient variable cannot be serialized during the object serialization.

6) Volatile:

In multi-threaded programming volatile modifier is used. If a field is declared volatile then its value must be read from the main method and not its own stack and this signal is given to the threads.

Read More :  Java program structure

7) Strictfp:

For the purpose of floating-point calculations this modifier is used. On every platform, the same floating point presentation will be given with the help of this keyword. Floating point variable is made more consistent across various platforms with the help of this modifier.

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The Traits Of A Good Programmer

Programmers are not boring irrespective of the stereotypes and lots of work demand they have a good social life too. Coders are basically from various background. Here are few personality traits that you need to inculcate:

1) Patience

Any programmer must have patience because the working hours will be very much longer. Irrespective of the language or programming area you need to be consistent with your hard work. Even though you might be a successful manager, you will need to face work pressure. Just be cool and calm and face the problem that is where your patience level lies.

2) Creativity

It is not just related to designers, writers, or artists but coders too come into the picture. By creativity, it does not mean a song, painting or a story but you’re creating a new function. Definitely, there are few ways of solving a programming task and all you need to do is check out the solution. Therefore it is quite significant to be creative and visualize the results.

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3) Logic

You need to have a good logical thinking if you want to become a good programmer being creative alone is not enough. It is a familiar fact that coding means logical thinking which is working properly. The best way to finding a workable solution is to split a programming down into small logical elements

4) Curiosity

You will get to know the fact that tech industry is frequently changing on a fast basis. You will get to know about the frequent changes only by having a good level of curiosity. You can learn more if you have a good natural inquisitive drive and only then you can become a good programmer. This will let you. The programmers must have the ability to learn good concepts and must have a broad-minded approach.

5) Passion

For being successful in any job you must have passion towards it. If you have passion then you will be unstoppable irrespective of any amount of problem. This will make you the best programmer. If you are not aware of the reason why there is a need to become a programmer or why you want to code implies that you are not passionate towards programming.

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6) Introversion

It is not mandatory that you need to be an introvert for being a successful programmer. You can socialize too but then remember that work while you work and play while you play. At times you also need to work alone sitting in front of a computer. Thus most of the programmers would be an introvert.

7) Conscientiousness

You need to be very alert to understand the significant aspects of programming. You need to understand that you should be the best coder and for that, you should go through each line of code because a single typo will make the entire program to collapse. Thus it is very important for your programming career.

Which Is The Best To Choose -JAVA vs .NET?

8) Humility

Most of the programmers are quite independent and have their own style executing their work in their office. You may be intelligent or you have more knowledge but then don’t show it off to others in the company be humble and get to know about others too. That is how you grow.

9) Adaptability

Being a successful programmer you need to be quite adaptable and you should not be rigid enough because no things go as per the plan, therefore, you need to change according to the requirements to be the best programmer.

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Which Is The Best To Choose -JAVA vs .NET?

For developing and executing applications on Windows Client and server operating systems Microcsoft. NET framework is used on Windows Client and server operating systems. For creating and running applications on the Windows platform there are features and functionality offered by it. There are five components of Microsoft .Net Platform and they are Windows Enterprise Servers, Windows Operating system, .Net Framework, Visual Studio. Net tool set etc. Here are the three components of . Net Framework they are Framework Class Library, Common Language Runtime (CLR) and ASP.NET.

Java

This program is actually created by the Sun Microsystems and refers to a set of programs and standards and now bought by Oracle Corporation. These are the following points when people talk about Java:

Java compiler and other utilities are present in the Java Development Kit and Java Virtual Machine is present in the Java Runtime Environment.

You can find lots of Application Programming Interfaces in the Java Class Libraries which is a large body of reusable code and functions that would be given by the operating system.

The developers can create the application with Java Programming language.

Read More:- Java Programming Course Vs .NET Programming Course: Which is Better?

Java Runtime

The code developed by the developer is translated by the Java compiler which is a part of Java Development Kit (JDK) into a standalone Java bytecode. Understandable instructions are the result of translating the Java bytecode with the help of Java Virtual Machine (JVM). If the JVM and Java Class libraries are present on a computer the machine is supposed to have the Java Runtime Environment (JRE).

Similarities Between .NET and Java

The development of the application is aimed to simplify both .Net and Java by offering a set of modular components, services, and a set of standardizing. With the help of standard services and components at their disposal developers can focus on business requirements other than programming lots of fundamental services.

Similar Computing technologies, multi-tiered

For enabling programmers to build tiered web applications Java and .Net both were developed. Client tier, Server tier, and database tier are present in the three-tiered application. For facilitating transactions both Java and .Net offer services in which business processes can be data recorded and triggered in databases.

Read More:- Which is preferable Java, .Net or PHP?

Enterprise Level Development

The same goal of enterprise application development is achieved by both and they also provide different tools. C# (primary language of . NET) and Java both are adopted from C and C++. You can find both the platforms like type-safe, object-oriented, and have automatic garbage collection. The best ability to develop and integrate web services are offered by both Java and .Net and thus making the applications more interoperable and extensible. Apart from that both .NET and Java/JEE have a set of services and components and there are various features of performing tasks like scripting Web pages, accessing a database, handling messages and linking remote sources.

Differences between .NET and Java

There are lots of differences in the frameworks and their interior workings and there are few aspects of the languages that come with them. Here are few differences that you need to know:

Windows vs. Multi-Platform:

The main focus of Microsoft .NET is on windows operating system irrespective of open source implementations of Microsoft’s .NET Framework similar to mono for creating cross-platform applications. Depending on the idea that same software should be present on various different kinds of consumer gadgets, computers and other devices on a network are done with Java. For every individual platform, Java applications run on virtual machines.

Read more:- How come Node.js overtakes Java and .Net?

Proprietary vs. Open source:

A strong and free product which is none other than .NET Framework and is created by Microsoft and combined into the Windows Operating System. For offering implementation, there are no third-party vendors irrespective of being highly extensible and lots of third-party additions are available.

There are lots of vendors who support Java and the main focus is on Oracle JDK and JRE. There is a need for lots of tools, products, and applications and that is one of the major strength of Java. The pumping force for innovating something is because of the healthy competition among Java EE vendors with the help of strict compatibility standards. There are some open source counterparts along with proprietary and commercial products. For all .NET innovation, Microsoft users depend on Microsoft

There is a standard development IDE present with Microsoft Visual Studio for .NET. There are various tools that a developer needs like debug, develop, build and deploy various applications for the .Net Framework is present in this tool. Eclipse, IntelliJ Idea, Oracle NetBeans, and Oracle JDeveloper are the four main IDEs of Java. Rather than just sticking to a single environment on the single platform your needs can be chosen easily and freely at various price points and select to use Mac OS X, Linux, or some other platform which is assisted by JDK but there is no standard tool that is present.

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