Tata Elxsi Specialist Interview Questions, Process, and Tips

Method overloading is having multiple methods with the same name but different parameters. Method overriding is having a subclass method with the same name and parameters as a superclass method.

• Method overloading is used to provide different ways to call the same method with different parameters.

• Method overriding is used to provide a specific implementation of a method in a subclass that is already defined in the super...read more

I have worked with several design patterns including Singleton, Factory, Observer, and Decorator.

• Implemented Singleton pattern to ensure only one instance of a class is created.

• Used Factory pattern to create objects without exposing the instantiation logic to the client.

• Implemented Observer pattern to notify dependent objects of any state changes.

• Used Decorator pattern to add functionality to an object dynamically.

String is immutable because it cannot be changed once created.

• Immutable objects are safer to use in multi-threaded environments.

• String pool in Java is possible because of immutability.

• StringBuffer and StringBuilder are mutable alternatives to String.

Streams process elements sequentially while parallel streams process them concurrently.

• Streams are single-threaded while parallel streams use multiple threads.

• Parallel streams are useful for large datasets that can be divided into smaller chunks.

• Streams can be converted to parallel streams using the parallel() method.

• Parallel streams can be converted back to sequential streams using the sequential() method.

• Example: Lis...read more

Spring bean scopes define the lifecycle and visibility of a bean within the application context.

• Singleton scope creates a single instance per application context

• Prototype scope creates a new instance every time the bean is requested

• Request scope creates a new instance for each HTTP request

• Session scope creates a new instance for each HTTP session

• Global session scope creates a new instance for each global HTTP session

Embedded testing is testing of software on hardware devices while software testing is testing of software on virtual or real machines.

• Embedded testing involves testing of software on hardware devices like microcontrollers, sensors, etc.

• Software testing involves testing of software on virtual or real machines like desktops, laptops, servers, etc.

• Embedded testing requires knowledge of hardware and software interaction wh...read more