IDFC FIRST Bank Senior Software Engineer Interview Questions and Answers

Static is a keyword in Java used to create class-level variables and methods.

• Static variables are shared among all instances of a class

• Static methods can be called without creating an instance of the class

• Static blocks are used to initialize static variables

• Static import is used to import static members of a class

The program replaces consecutive same characters in a string with a single '$'.

• Iterate through each character in the string

• Compare the current character with the next character

• If they are the same, replace the next character with '$'

• Continue until the end of the string

Function overloading is having multiple functions with the same name but different parameters. Function overriding is having a derived class implement a method with the same name and parameters as a method in its base class.

• Function overloading is used to provide different ways of calling a function with different parameters.

• Function overriding is used to provide a specific implementation of a method in a derived class...read more