Ukb Electronics Interview Questions and Answers

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

• Method overloading is achieved by having methods with the same name but different parameters in the same class.

• Method overriding is when a subclass provides a specific implementation of a method that is already provided by its superclass.

• Example of method ...read more

Remove duplicate elements in string using recursion

• Create a recursive function that takes a string and a set to keep track of unique characters

• Check if the current character is already in the set, if so skip it

• Append the current character to the result and add it to the set

• Recursively call the function with the remaining substring

Encapsulation is the concept of bundling data and methods that operate on the data into a single unit, known as a class.

• Encapsulation helps in hiding the internal state of an object and restricting access to it.

• It allows for better control over the data by preventing direct access from outside the class.

• Encapsulation also helps in achieving data abstraction, where the internal details of an object are hidden and only necessary information is exposed.

• Example: In a class repres...read more

Exception handling is the process of responding to the occurrence of exceptions during program execution.

• Exception handling allows developers to gracefully handle errors and prevent program crashes.

• It involves using try, catch, and finally blocks to handle exceptions.

• Examples of exceptions include NullPointerException, ArrayIndexOutOfBoundsException, and IOException.

Java is a popular programming language known for its platform independence and object-oriented approach.

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

• It is object-oriented, allowing for modular and reusable code

• Java is widely used for developing web applications, mobile apps, and enterprise software

• Popular Java frameworks include Spring, Hibernate, and Apache Struts