Future Focus Infotech Software Developer Interview Questions and Answers

Round duration - 45 miniutes
Round difficulty - Medium

Technical Interview round that lasted for about 45 minutes. Questions based on Java and Spring framework were discussed.

Q1. What are the different bean scopes available in Spring?
Ans. 
The different bean scopes available in Spring are singleton, prototype, request, session, and application.
• Singleton scope: Default scope, only one instance per Spring container

• Prototype scope: New instance created each time bean is requested

• Request scope: Bean is created once per HTTP request

• Session scope: Bean is created once per HTTP session

• Application scope: Bean is created once per ServletContext
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Q2. Can you explain the bean life cycle in the Spring Bean Factory Container?
Ans. 
The Spring Bean Factory Container manages the life cycle of beans in Spring applications.
• Beans are created and initialized in the Spring context

• Beans can be configured to have different scopes like singleton, prototype, etc.

• Beans can have initialization and destruction callbacks defined

• Beans can be wired together using dependency injection
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Q3. What is the difference between 'throw' and 'throws' in Java?
Ans. 
In Java, 'throw' is used to throw an exception explicitly, while 'throws' is used in method signature to declare the exceptions that the method can throw.
• throw is used to throw an exception explicitly within a method

• throws is used in method signature to declare the exceptions that the method can throw

• throw is followed by an exception object, while throws is followed by exception class names separated by commas

• Example: ...read more
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Round duration - 45 minutes
Round difficulty - Medium

Technical Interview round that lasted for about 45 minutes. Questions based on Java and OOPS Concepts were discussed. Basics of IOT and Web Services like AWS were also asked.

Q1. What is the difference between JRE and JDK?
Ans. 
JRE is for running Java applications, while JDK is for developing and running Java applications.
• JRE stands for Java Runtime Environment and is used for running Java applications.

• JDK stands for Java Development Kit and is used for developing and running Java applications.

• JDK includes JRE, as well as development tools such as compiler and debugger.

• JRE does not include development tools, only the necessary components to r
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Q2. What is the 'this' keyword in Java?
Ans. 
The 'this' keyword in Java refers to the current instance of a class.
• Used to refer to the current object within a method or constructor.

• Can be used to differentiate between instance variables and local variables with the same name.

• Can be passed as an argument to other methods or constructors.

• Example: this.variableName = value;
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Q3. What are the layers of the IoT protocol stack?
Ans. 
The layers of the IoT protocol stack include application, transport, network, link, and physical layers.
• Application layer: Handles data exchange between devices and applications. Examples include MQTT, CoAP.

• Transport layer: Ensures data delivery between devices. Examples include TCP, UDP.

• Network layer: Manages device addressing and routing. Examples include IPv4, IPv6.

• Link layer: Handles communication between directly ...read more
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Round duration - 30 minutes
Round difficulty - Easy

HR round where the interviewer asked questions to know more about me.

It asking basic level aptitude question.about 60 question

It is high level aptitude test about 20 question

Q1. Java, webservice, hibernate,etc
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