FIS Software Engineer Interview Questions, Process, and Tips

Arrays, data structures, Algorithms, problem solving

Q1. Explain opps concept in java
Ans. 
OOPs concept in Java refers to Object-Oriented Programming principles like inheritance, encapsulation, polymorphism, and abstraction.
• Inheritance: Allows a class to inherit properties and behavior from another class.

• Encapsulation: Bundling data and methods that operate on the data into a single unit.

• Polymorphism: Ability to present the same interface for different data types.

• Abstraction: Hiding the implementation detail
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Q2. Explain concept of Polymorphism
Ans. 
Polymorphism is the ability of a single function or method to operate on different data types.
• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• There are two types of polymorphism: compile-time (method overloading) and runtime (method overriding).

• Example: Animal class with methods eat() and sleep(). Dog and Cat classes can inherit from Animal and override these methods.
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Q1. Core Java basic functions
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Q2. Collection related questions with code snippet examples
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Q3. Multithreading and Exceptional Handling
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Q1. View encapsulation
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Q2. View child life cycle hooks
Ans. 
Child life cycle hooks are methods that are called at specific points in the lifecycle of a child component in Angular.
• ngOnChanges: called when an input property of the component changes

• ngOnInit: called once the component is initialized

• ngDoCheck: called during every change detection run

• ngAfterContentInit: called after content (ng-content) has been projected into the component

• ngAfterContentChecked: called after every ch...read more
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Q1. Tell me something about yourself
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Q2. What are the technical skills you know
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Aptitude

Q1. Why should we hire you?
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Q2. What are your salary expectations?
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Q3. What is your family background?
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Q4. What are your strengths and weaknesses?
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Q5. Tell me about yourself.
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Q6. Skills, why we select you
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Online Aptitude Test

Q1. Questions related to Java and other technical stuff
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Q2. What are the basic OOPS concepts of Java? What is the difference between String and StringBuffer?
Ans. 
Basic OOPS concepts of Java include inheritance, encapsulation, polymorphism, and abstraction. String is immutable while StringBuffer is mutable.
• Inheritance: Allows a class to inherit properties and behavior from another class.

• Encapsulation: Bundling data and methods that operate on the data into a single unit.

• Polymorphism: Ability to present the same interface for different data types.

• Abstraction: Hiding the implement...read more
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Q1. Managerial Round
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Q2. Preferred Location and DOJ
Ans. 
I prefer to work in a location that is easily accessible and has a good work-life balance. My preferred date of joining is within a month.
• Prefer location with good work-life balance

• Location should be easily accessible

• Preferred date of joining within a month
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