Infosys Junior Java Developer Interview Questions, Process, and Tips

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Q1. What is optional class?
Ans. 
Optional class is a container object which may or may not contain a non-null value.
• Optional class was introduced in Java 8 to deal with NullPointerExceptions.

• It is used to avoid null checks and handle null values more effectively.

• Methods like isPresent(), ifPresent(), orElse() are commonly used with Optional class.
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Q2. What is abstract method?
Ans. 
An abstract method is a method that is declared without an implementation in an abstract class or interface.
• Abstract methods do not have a body and must be implemented by subclasses.

• Abstract classes can have both abstract and non-abstract methods.

• Interfaces can only have abstract methods by default.
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All Aptitude tests are generally used for job placement, college program entry, and to help people to get an idea of where their interests and aptitudes can take them regarding careers

Q1. Why do you what this job
Ans. 
I am passionate about Java development and eager to apply my skills in a professional setting.
• I have a strong foundation in Java programming and enjoy solving complex problems.

• I am excited about the opportunity to work with a team of experienced developers and learn from their expertise.

• I am motivated by the chance to contribute to the development of innovative software solutions.

• I am confident that this job will provi...read more
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Q2. How did you hear about this position
Ans. 
I heard about this position through a job search website.
• Job search website

• Online job board

• Referral from a friend

• Company's career page
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Q3. Another seemingly innocuous interview question, this is actually a perfect opportunity to stand out and show your passion for and connection to the company. For example, if you found out about the gig thro...read more
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Q4. Tell me about yourself.
Ans. 
I am a Junior Java Developer with a passion for coding and problem-solving.
• I have a strong understanding of Java programming language and its frameworks.

• I have experience in developing web applications using Java, Spring, and Hibernate.

• I am familiar with database management systems like MySQL and Oracle.

• I have worked on projects involving RESTful APIs and have knowledge of JSON and XML.

• I am a quick learner and enjoy wo
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Q5. This question seems simple, so many people fail to prepare for it, but it’s crucial. Here's the deal: Don’t give your complete employment (or personal) history. Instead, give a pitch—one that’s concise and...read more
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Q1. What is a java and explain the concept of oops
Ans. 
Java is a high-level programming language used for developing applications and software.
• Java is an object-oriented programming language.

• It is platform-independent and can run on any device with a Java Virtual Machine (JVM).

• Java follows the concept of OOPs (Object-Oriented Programming System).

• OOPs is a programming paradigm that uses objects to represent real-world entities.

• It includes concepts like inheritance, encapsul...read more
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Q2. What is a inheritance and explain
Ans. 
Inheritance is a mechanism in object-oriented programming where a new class is created by inheriting properties of an existing class.
• Inheritance allows for code reuse and promotes code organization.

• The existing class is called the superclass or parent class, while the new class is called the subclass or child class.

• The subclass inherits all the properties and methods of the superclass, and can also add its own unique p...read more
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Q3. What is your hobbies
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The java interpreter is use for the executions of the sources code

Q1. Javascript core Java
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Q2. Core Java developer form
Ans. 
The question is related to Core Java development.
• Focus on your knowledge and experience in Core Java development.

• Provide examples of projects or tasks you have completed using Core Java.

• Highlight any specific skills or technologies related to Core Java that you are proficient in.
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Q3. Core Java javascript HTML programming
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Q4. Java javascript
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Javascript

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