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Capgemini Java Developer Interview Questions and Answers for Freshers

Updated 5 Feb 2024

Q1. How many teams involved in spiral model?

Ans.

The number of teams involved in spiral model varies based on the project requirements.

  • Spiral model is a flexible model that allows for multiple teams to work on different phases simultaneously.

  • The number of teams involved can range from one to many depending on the size and complexity of the project.

  • Each team is responsible for a specific phase of the project, such as planning, design, implementation, and testing.

  • For example, a large software development project may involve m...read more

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Q2. What is spiral model?

Ans.

Spiral model is a software development model where the process is divided into smaller cycles.

  • It is a combination of waterfall and iterative model

  • Each cycle involves planning, risk analysis, development, and testing

  • It is suitable for large and complex projects

  • Example: Microsoft Office was developed using the spiral model

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Q3. What is method overloading?

Ans.

Method overloading is when a class has multiple methods with the same name but different parameters.

  • Method overloading allows for more flexibility in method calls

  • The methods must have different parameters, either in number or type

  • Example: public void print(int num) and public void print(String str)

  • Overloading constructors is also common in Java

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Q4. How many steps spiral model?

Ans.

The spiral model has four steps.

  • The four steps are: Planning, Risk Analysis, Engineering, and Evaluation.

  • Each step involves iterative development and feedback from stakeholders.

  • The model is used in software development to manage risk and ensure quality.

  • Example: A software development team may use the spiral model to create a new product.

  • The team would start with planning, then move on to risk analysis, engineering, and evaluation.

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Q5. What is java?

Ans.

Java is a high-level, object-oriented programming language used to develop applications for various platforms.

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

  • It is known for its security features and is commonly used for developing web and mobile applications

  • Java is also used for developing enterprise-level applications and software tools

  • Examples of popular Java-based applications include Minecraft, Android OS, and Apache Hadoop

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Q6. What is method overriding?

Ans.

Method overriding is when a subclass provides its own implementation of a method that is already defined in its superclass.

  • The method in the subclass must have the same name, return type, and parameters as the method in the superclass.

  • The access level of the overriding method cannot be more restrictive than the overridden method.

  • Example: class Dog extends Animal { public void makeSound() { System.out.println("Bark"); } }

  • Example: Animal myAnimal = new Dog(); myAnimal.makeSound...read more

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Q7. What is data?

Ans.

Data is information that is stored and can be processed by a computer.

  • Data can be in various forms such as text, numbers, images, audio, video, etc.

  • Data can be structured or unstructured.

  • Examples of data include customer information, financial records, sensor readings, social media posts, etc.

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Q8. What is method?

Ans.

A method is a block of code that performs a specific task and can be called by other parts of the program.

  • Methods are used to break down a program into smaller, more manageable pieces.

  • They can take input parameters and return values.

  • Examples of methods include print(), sort(), and calculateArea().

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Q9. What is oops?

Ans.

OOPs stands for Object-Oriented Programming. It is a programming paradigm based on the concept of objects.

  • OOPs focuses on creating objects that contain both data and functions to manipulate that data.

  • It emphasizes on encapsulation, inheritance, and polymorphism.

  • Java is an OOPs language. Example: A car is an object that has properties like color, model, and functions like start, stop, etc.

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