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Hire core Java Developers from Aglowid that are proficient in various Java frameworks such as Hibernate, Struts, Spring, Blade and others. Our dedicated Java programmers can also integrate Java with other popular web app frameworks to provide you with a full-stack Java solution.
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Java development is a broad spectrum with many possibilities and varied solutions. If you want to hire Hibernate Developer or hire Struts Developer or other such Java framework specific talent, you can hire remote developers at cost-effective rates from Aglowid. We have a pool of dedicated Java Developers for you to find the right Java talent for your project.
Hire Blade Developer from Aglowid to leverage the lightweight open-source template engine for creating complex enterprise-grade web apps on Java. Using Blade, we can integrate features of Laravel in your Java project to expand its features.
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Have an urgent project that requires complex database handling and needs to be launched faster to market? Hire OpenXava developer and augment them in your app Development Team to speed up your Java project completion.
Get end-to-end core Java development services by hiring certified Core Java developer from Aglowid who can handle the design, development and complete management of your Java-based web application projects.
Hire Struts Developer from Aglowid who are experts in Java based services like developing elegant flexible, maintainable & extensible modern web apps, database design, app customization & other enhancements.
We have pre-vetted Hibernate Developers for hire that know how to leverage ORM, and JPA for powering any JPA-specific Java projects. They are also proficient in writing scalable code, developing responsive websites and microservices that can interact with databases.
Hire Groovy Developer from Aglowid who are highly skilled in designing & developing vital Java systems, automating tasks & preparing Java pipelines, working on chaining, asynchronous operations and carry out other Java functionalities.
Hire professional software engineers at Aglowid who have experience and expertise in using Play framework for developing robust, scalable & responsive web applications. Our Java Play Developers know how to use it's reactive programming, CoC & other features.
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Are you looking to hire a Java programmer to work on your existing Java project, or are you finding Java developer team to start a new Java project from scratch? Whatever your Java requirements, Aglowid has flexible engagement models to get Java programmers that match it.
Starting a new Java Project? Why not to get a free consultation. Book a absolutely free consultation call with our Java consultants to get your Java project development roadmap and hire Java coders as per your custom project requirements.
Have an existing Java project that you want to upgrade to the latest Java version, but unsure how to? Hire Java experts from Aglowid for seamlessly upgrading your legacy Java project to the latest Java version without any risk of data loss.
Have an existing web app based on other backend frameworks? Want to shift to Java but worried about potential risks and vulnerabilities? Hire Java engineers from Aglowid to make this process effortless and secure.
Have an existing Java Development Team, but running short on resources? Hire a Java professional with excellent communication skills from Aglowid and easily onboard them in your team within 48 hours.
With Aglowid, you get the three most efficient hiring models to hire Java developer per your needs. Our Java developer can be hired on Full Time, Part Time and Hourly basis.
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Extend your dev strength with the best pre-vetted Java Talents at Aglowid who can provide you with a diverse range of Java backend solutions. Find and hire Java Developers for any specific niche or requirement. Our dedicated Java coders expertise in -
Develop high quality scalable and robust enterprise solutions utilizing latest Java technologies based on J2EE/J2ME and other frameworks such as Spring, Hibernate, Sturts.
Hire proficient Java Cloud Developers with prolonged experience in integrating & managing popular cloud technologies such as AWS based EC2, ElastiCache, DynamoDB, Lambda, Redshift etc.
Develop a native Android Mobile App with our dedicated Java mobile app developers for hire and get an interactive, secure, scalable, and robust Java based mobile application.
Build a secure yet elegant iOS apps based on Java frameworks with our certified Java iOS developer and enjoy the cost-effective smoother native iOS interface experience that appeal your user's interest.
Integrate your existing projects with the powerful, robust APIs. Hire Java API Experts at Aglowid and get the most secured yet robust performance driven APIs for your business project.
Looking for result-oriented Java Based Solutions? Our Dedicated Senior Java Coders are always there to consult you with any type of Java based query for your project.
Looking to migrate your existing project to Java? Our Senior Java Architects are well experienced in migrating the existing projects to other platforms without disturbing the existing work.
To ensure a workable project, one needs on-time support for maintenance. Hire Remote Java Developers from us to ensure the workability of your project.
At Aglowid, we only hire the top 1% of Java engineers after putting them through a tedious screening and selection process. Our dedicated development team is comprised of professional Java Developers who are not only well-versed in Java development best practices but also possess the necessary skills required for handling Java projects of any complexity. Aglowid Java Developers also consistently stay updated with the latest advancements and skillsets in the Java ecosystem, making them the right choice:
Technical
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Add Dedicated TalentsAll our professional Java Developers follow all best practices in Java development and have absolute understanding of core Java principles. They also are proficient with many Java development tools available for smoother Java development process.
Benefits of Hiring Java Developers from Aglowid
When you hire Java Programmer from Aglowid, you get the benefits of a dedicated Java developer team at the most cost-effective rates, that overcomes the limitations of hiring in-house Java Developers and freelancers. Get assured quality work with important documents such as signed NDA, code ownership, Service Level Agreements and hire the best talents in Java development for your project today.
In-House | Freelancer | ||
---|---|---|---|
Hiring Model | Full Time | Monthly, PartTime & Full-time | Weekly, Hourly |
Time to Get Right Developers | 4 - 12 weeks | 1 day - 2 weeks | 1 - 12 weeks |
Time to Start a Project | 2 - 10 weeks | 1 day - 2 weeks | 1 - 10 weeks |
Recurring Cost of Training & Benefits | $10,000 -$30,000 | 0 | 0 |
Time to Scale Size of the Team | 4 - 16 weeks | 48 hours - 1 week | 1 - 12 weeks |
Pricing (weekly average) | 2.5 X | 1.5 X | 1 X |
Project Failure Risk | Low | Extremely low, we have a 98% success ratio | Very High |
Developers Backed by a Delivery Team | Some | Yes | No |
Dedicated Resources | Yes | Yes | No |
Shadow Resource | Costly | Yes | No |
Project Manager | Extra Cost | Minimal cost | No |
Quality Assurance Check | Extra Cost | Assured | No |
Query Support | High | 24 Hours Assurance | No |
Tools & Environment | Depend on Team | High | Uncertain |
Agile Development Methodology | May Be | Yes | No |
Impact Due to Turnover | High | None | High |
Structured Training Programs | Some | Yes | No |
Communications | Seamless | Seamless | Uncertain |
Termination Costs | High | None | None |
Assured Work Rigor | 40 hrs/week | 40 hrs/week | Not Sure |
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Hire Java Experts TodayPick the right engagement model as per your project needs – Full Time, Part Time or Hourly.
Pick the best candidates from our top Java Developers' Profiles to continue.
Interview the selected candidate where you can assess their skills via theoretical & practical questions.
Now, the selected final candidate will onboard your team within 24–48 hours after final confirmation.
Finding the right candidates to fill your Java developer vacancy can be a challenging process that requires proper strategical planning and execution. Here is the ultimate hiring guide you can refer to when you are looking to hire Java developers for your next venture –
Before you step out to find Java programmers for your project, you should prep a little to have a better opportunity of finding the right talent(s) effectively and in shorter duration. It helps having clarity about –
One you have your (PRD) Project Requirements Document ready, you should focus on where you can find professional Java developers at. There are multiple ways you can search for Java developers online and offline. Some of them are -
Java has been around since ages, and it has undergone several transformative changes in this duration. When looking for Java Developers, you need to assess their fundamental concepts of Java as well as knowledge about latest Java frameworks, libraries, rules, coding best practices, security setup and other such important aspect. Here are some key technical skills to look for when hiring Java developers –
Next, it is also important to check the communication and team skills of the Java developers you are screening to join your team. Here are some effective ways to assess their communication skills –
Cultural alignment, or cultural fitness is as important as the developers technical and interpersonal skills. If the talent isn’t a right fit as per your company’s working culture, it is likely to cause riffs, arguments and delayed project deliverables. Hence it is important to know their cultural believes before making them an offer. Here is how you can test Java developers’ cultural alignment –
Everything checked out so far? Great! Now you need to also make sure the developer takes interests in your offer! To do so, you need to strategize how to approach them while making your offer that holds their interest but at the same time doesn’t cost you a fortune beyond your comfort budget range. Here’s how you could go further with negotiations –
Always learn from market. Check the prices offered for the role you’re screening them for. For instance, you are looking for Java Architects, check the average annual salary or hourly rates they are been offered through studies, job portals and other credible sources.
Self-assessment is just as necessary. Check what you’re offering to other developers in the same league as the candidate you’re looking to hire. Refer to their salary negotiation structures to be better prepared for negotiations.
Build a proper salary package with non-monetary benefits included such as health insurance, dental and vision coverage, retirement plans, planned leaves and other such perks your company can afford to offer.
Provide them with a glimpse of some challenging projects they will get to be a part of. Make sure to showcase your commitment to experimenting and using latest Java developer tools.
If your company has policies for employee recognition rewards, bonuses or any such programs, highlighting them will give you an edge in further negotiations.
Discuss how your company approaches work-life balance and how much does it value it. Employees look for companies that understand the importance of work-life balance.
Once every other process is out of the way, you should focus on effectively onboarding the Java developer/developers in your team. Here are some good practices you can follow for doing so -
I. Outline Employment Term | |
---|---|
What to Include | Sub-details |
Position Details | Job Title, Job Role, Project Details |
Work Schedule | Defined working hours, working days, leaves entitlement. |
Location | On-site, remote or combination of both. |
Start Date | Define expected start date |
Duration of Employment | Permanent, Contractual or Temporary |
II. Salary and Other Perks | |
What to Include | Sub-details |
Salary | Expected Salary, Frequency of Payment |
Benefits | Health insurance, Retirement Plans, Paid Leaves, Vacation Days & other Perks |
Bonuses & Incentives | Performance Based Bonuses, Employee Referral Incentive and other such monetary perks. |
III. Job Contract | |
What to Include | Sub-details |
Job Description | Detailed Job Description which includes Key Responsibilities, Expectations and other required skills. |
Terms and Conditions | Clearly outline the Terms and Condition of Employment. Make sure it includes – Termination Clauses, Probation Duration, NDA and Non-Compete Agreements. |
Confidentiality Agreement | Add a confidentiality agreement to protect the company's sensitive information if needed. |
Dispute Resolution | Specify how to resolve a dispute if one ever arises between the employee and employer. |
Legal Compliances | Make sure the job contract complies with relevant employment laws and regulations. |
IV. Final Steps and Contact Information | |
What to Include | Sub-details |
Test Project/ Pilot Task | Provide topic and submission deadline for any test task (if any). |
Legal Paperwork | Ask the candidate to provide all important documents to start onboarding. |
Contact Information | Provide a PoC – Point of Contact to whom the candidate can reach out if they have any queries. |
Java is considered as a platform independent language because it makes use of JVM – Java Virtual Machine that abstracts the underlying hardware and operating system. By translating the platform independent Java bytecode into machine-specific code, Java programs are able to run on any platform that supports JVM. Hence Java programs are able to run on almost any platforms without needing much intervention from the developer to modify the Java codebase to work on a platform.
This concept is known as decoupling the language from the hardware and OS. Most languages compile directly to machine code, whereas Java compiles to an intermediate format known as bytecode which can be executed on any platform through JVM. This enables Java to be a ‘Write Once, Run Anywhere’ library, which makes it a truly platform independent language.
The reason Java cannot be called a pure object-oriented language is that it supports primitive data types like int, byte, long and more which are not objects. Java mixes objects and primitive data types, meaning not everything in Java is an object. This goes against the qualities of pure object-oriented language.
Additionally, Java has features like static fields and methods that can be used without having to create any instance of a class. This defies the principle of encapsulating data and behavior within objects, which is an essential part of object-oriented programming.
Even if Java is not a pure object-oriented programming language, it still provides impressive support for OOPs, making it ideal for developing large-scale applications.
Stack and Heap Stack Memory are two types of memory used by Java programs during execution. Both are useful towards establishing a proper memory management system in place and avoiding memory leaks or inefficient resource utilization.
Stack memory is where the data is stored temporarily whereas Heap memory is used for dynamic memory allocation. It is a pool of available memory that is used by the program, and it can grow or shrink as per memory allocation and freeing.
Aspect | Stack Memory | Heap Memory |
---|---|---|
Size Management | Fixed Size, Determined at the initializing stage of execution | Flexible size, changes during the program’s lifecycle |
Storage Purpose | Control info, local variables, function arguments | Objects, Data Structures with dynamic lifespans |
Data Accessibility | Only accessible during active function call | Accessible until Java developer manually deallocates it or the program ends |
Memory Management | Automatically managed | Manually managed by the Java programmer |
Localization | Near the CPU, better access times | Further away, slower access times |
Garbage Collection | Not required | Requires garbage collection for avoiding memory leaks |
Lifetime | Limited to the scope of a function | Dynamic, can exist beyond the scope of a function |
In Java, variable and instances of classes get assigned default values when not explicitly initialized. The default value would depend on the type of variable. Here are some default values for common data types in Java –
These are the default values that get automatically assigned by Java runtime system when you declare a variable without explicitly initializing it. Local variables need to be explicitly initialized before they are used or the code could run in a compilation error.
Java makes use of the word ‘static’ for defining class elements rather than class instances. Static keywords can be utilized with classes, methods, variables and also blocks. By making a member static, it can be accessed without ever needing to create a class.
A static variable will be a class-level variable that has only a single copy and gets shared by all class instances. When you modify static variable by one object, it gets reflected in all others. This is useful for sharing data between multiple class instances.
Static method refers to a method that belongs to the class and not the object. You aren’t required to call an object and it isn’t able to access non-static variables/methods.
And a Static Class is a class in Java that cannot be instantiated and all its members are static. Such a class refers to a collection of static methods and variables.
Feature | Static Method | Static Variable | Static Classes |
---|---|---|---|
Purpose | Defines behavior related to the given class | Store data shared by all instance of a class | Grouping related functionality, never instantiated |
Access | Can only access static data members and static methods | Able to access both instances and static data members | Static classes cannot be instantiated |
Memory Allocation | Fixed in the RAM, single allocation | Dynamic, allocated as per instance | Static classes cannot be instantiated |
This Keyword | Can’t use | Can use | Static classes cannot be instantiated |
Access Modifiers | Can use public, private, internal, protected modifiers | Can use public, protected and private modifiers | Static classes cannot be instantiated |
No, you cannot override a static method in Java. The concept of overriding in Java applies to instance methods and not static methods. It is used for situations where a subclass wants to provide a different implementation for a method then the one already provided by its superclass.
Static methods are not polymorphic in nature. Hence, if a subclass defines a method with the same signature as the static method in its superclass, it is not considered an override. It becomes a new static method with the same name.
The subclass can access the static method of its superclass by using the keyword super.
Method Overloading allows Java developers to define multiple methods within a single class with the same name. But each overloaded method needs to have different number or type of parameters. This is useful as you can use the same method name to perform various tasks as per the parameters provided.
public class OverloadingExample {
// Method overloading with different number of parameters
public int sum(int a, int b) {
return a + b;
}
public int sum(int a, int b, int c) {
return a + b + c;
}
// Method overloading with different types of parameters
public double sum(double a, double b) {
return a + b;
}
public static void main(String[] args) {
OverloadingExample example = new OverloadingExample();
System.out.println("Sum of 3 and 5: " + example.sum(3, 5));
System.out.println("Sum of 3, 5, and 7: " + example.sum(3, 5, 7));
System.out.println("Sum of 3.5 and 5.5: " + example.sum(3.5, 5.5));
}
}
Method Overriding is used for achieving runtime polymorphism. Poly in Polymorphism means “many” and “morphs” refers to “multiple forms”. Hence, polymorphism in Java allows developers to use a child class object instead of a parent class object. For overriding a method in Java, the child class needs to define a method with the same name, return type and parameters of that of parent class method. The child class method also needs to contain the ‘override’ keyword.
class Parent {
void show()
{
System.out.println("parent class method");
}
class Child extends Parent {
void show()
{
super.show();
System.out.println("child class method");
}
public static void main(String args[])
{
Parent ob = new Child();
ob.show();
}
}
We use the ‘super’ keyword in Java for calling methods or constructors in a superclass or for accessing members of a superclass that are hidden by members in a subclass. Here are the three use cases where we would use the ‘super’ keyword –
Here we can use the ‘super’ keyword to call a method in the superclass from the subclass.
public class Birds {
void makeSound() {
System.out.println("The birds makes a sound");
}
}
public class Kingfisher extends Birds {
void makeSound() {
super.makeSound(); // Call the makeSound() method in the Birds class
System.out.println("The kingfisher makes a kik-kik sound");
}
}
As you can see, the ‘Kingfisher’ class extends the ‘Birds’ class. The ‘Birds’ class overrid the ‘makeSound()’ method from the ‘Birds’ class. Inside the overridden ‘makeSound()’ method in the ‘Birds’ class, the ‘super.makeSound()’ statement calls the ‘makeSound()’ method. This first executes the ‘makeSound() method in ‘Birds’ class and later executes the rest of the code in the ‘Kingfisher’ class.
Hence, when you create the ‘bird’ object and call the ‘makeSound()’ method, you will get the following output:
The bird makes a sound.
The Kingfisher makes a kik-kik sound.
Here we will use the ‘super’ keyword to call a constructor in the superclass from the subclass.
public class Birds {
private String name;
public Birds(String name) {
this.name = name;
}
}
public class Kingfisher extends Birds {
private int age;
public Kingfisher(String name, int age) {
super(name); // Call the constructor in the Birds class
this.age = age;
}
}
In this example, ‘Kingfisher’ class extends to ‘Birds’ class. The ‘Birds’ class uses a constructor that takes two parameters – ‘String’ and ‘int’. Inside the ‘Birds’ constructor, the ‘super(name)’ statement is used for calling the constructor in the ‘Birds’ class. So, when a ‘Kingfisher’ object is created, it executes the constructor ‘Birds’ class and then executes the remainder of the code in the ‘Kingfisher’ constructor.
In this instance, we will use the ‘super’ keyword for accessing a member of the superclass that is hidden by a member of the subclass.
public class Birds {
protected String name;
public Birds(String name) {
this.name = name;
}
}
public class Kingfisher extends Birds {
private String name;
public Kingfisher(String name) {
super(name); // Call the constructor in the Birds class
this.name = name;
}
public void displayName() {
System.out.println("Name of the Kingfisher: " + this.name);
System.out.println("Name of the birds: " + super.name);
}
Here the ‘Kingfisher’ class extends the ‘Birds’ class. The ‘Kingfisher’ class uses a private ‘name’ variable to hide the ‘protected name’ variable in the ‘Birds’ class.
Inside the ‘displayName()’ method the ‘Kingfisher’ class has ‘this.name’ statement that is used for accessing the ‘name’ variable in ‘Kingisher’ class and the ‘super.name’ statement is being used for accessing the ‘name’ variable in the ‘Birds’ class.
Copy constructor in Java refers to a constructor used for initializing an object via another object of the same class. The changes made to the existing object won’t affect the new copy.
When we copy some entity for creating two or more entities in a way that the changes in one entity reflects in the other entity as well, it is called a shallow copy. Since the changes are reflected and mimicked on all shallow copied entities, new memory allocation never happens for the other entities. Only the reference of that entity is copied to the other entities.
On the other hand, Deep copy is when we copy some entity to create two or more entities in a manner that changes made to one entity doesn’t reflect in other entities. Since the reference of one entity doesn’t get copied to the other, each entity has its independent reference. Also new memory allocation takes place for each deep copy entity.
Java supports inheritance which is a mechanism in which one object acquires all the properties and behaviors of a parent object. It is an important aspect of the Object-Oriented Programming System. The purpose behind inheritance is to create new classes built upon existing classes. This allows reusing the methods and fields of the parent class while adding more fields in the current class if needed. Java supports multiple types of inheritance such as
when a derived class or a subclass inherits from a single base or superclass.
this is a situation where there is more than one level where the class inherits from a base class and this derived class in then inherited by another class.
this is a type of inheritance where a class is able to inherit properties and behavior from more than a single parent.
this type of inheritance creates a sense of hierarchy where a super class is inherited by more than one class.
when you combine one or more types of inheritance, it is called hybrid inheritance.
Singleton is an important design pattern in Java. Its purpose is to ensure that a class should only be allowed to have one object. The class needs to ensure that only a single instance should be created and single object is allowed to be used by all other classes. There are two types of Java Singleton patterns – Early Instantiation and Lazy Instantiation. Singleton Pattern is mainly used for multi-threaded or database-driven applications.
Servlet is a Java class that manages, processes and replies to requests with responses. It is used for extending the capabilities of servers that host applications that are accessed via request-response style of programming. Servlets are most commonly used for building web apps and provide a solution to create dynamic content on the web server and interact with client requests.
JavaBeans is a design pattern that comes with a set of conventions for building reusable and modular components. They represent data in object-oriented manner and are commonly used in GUI development.
Multiprocessing as the name suggests, refers to multiple processes running independently with their own allotted memory space. They don’t share memory and any communication between them is achieved through inter-process communication mechanisms.
Multithreading on the other hand runs multiple threads within the same process, sharing memory space. Since these threads are within the same process and they share memory, they are able to communicate much more efficiently with each other.
Access modifiers in Java are keywords which specify the accessibility and visibility of classes, methods, variables and other components of a Java program. They are mainly used for controlling the level of encapsulation and restricting access to certain components of a class.
There are four major access modifiers in Java –
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