SISGAIN Interview Questions and Answers

Method overriding is a concept in object-oriented programming where a subclass provides a specific implementation of a method that is already provided by its superclass.

• Method overriding allows a subclass to provide a specific implementation of a method that is already provided by its superclass.

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

• Example: class Animal { void makeSound() { System.out.println('Animal i...read more

Java is platform independent due to its bytecode and JVM.

• Java code is compiled into bytecode which is platform-independent.

• JVM (Java Virtual Machine) interprets the bytecode and executes it on any platform.

• JVM acts as an abstraction layer between the Java code and the underlying hardware.

• This allows Java programs to run on any platform that has a JVM installed.

• For example, a Java program written on a Windows machine can run on a Linux machine without any modifications.

I am a skilled programmer with expertise in coding languages and object-oriented programming principles.

• Proficient in coding languages such as Java, Python, and C++

• Strong understanding of object-oriented programming concepts like inheritance, polymorphism, and encapsulation

• Experience in developing applications using OOP principles, such as designing classes and objects

The Business Add-In (BADI) implemented is used to enhance the standard functionality of a SAP system.

• Implemented BADI for custom validation during sales order creation

• Implemented BADI for custom logic in material master data maintenance

• Implemented BADI for custom authorization checks in HR module

HANA is an in-memory database and application development platform developed by SAP.

• HANA stands for High-Performance Analytic Appliance.

• It allows real-time processing of large amounts of data.

• It can be used for data warehousing, analytics, and application development.

• HANA is used by businesses to gain insights from their data and make better decisions.

• Examples of companies using HANA include Coca-Cola, Nestle, and Mercedes-Benz.

An array is a collection of elements of the same data type, stored in contiguous memory locations.

• Arrays can be one-dimensional or multi-dimensional

• Elements in an array can be accessed using their index

• Arrays can be initialized with values at declaration

• Arrays can be sorted or searched using built-in functions

OOPs stands for Object-Oriented Programming. It is a programming paradigm that uses objects to design applications.

• OOPs focuses on creating reusable code and organizing it into objects.

• It uses concepts like inheritance, encapsulation, and polymorphism.

• Examples of OOPs languages are Java, C++, Python, etc.

Spring Boot is a framework that simplifies the development of Java applications by providing pre-configured settings and tools.

• Spring Boot eliminates the need for manual configuration by providing defaults for most settings.

• It allows for the creation of stand-alone, production-grade Spring-based applications.

• Spring Boot includes embedded servers like Tomcat, Jetty, or Undertow for easy deployment.

• It promotes convention over configuration, reducing the amount of boilerplate co...read more