A3 RCM Healthcare Interview Questions and Answers

Collection is a framework that provides an architecture to store and manipulate a group of objects.

• HashMap is a data structure that stores key-value pairs and uses hashing to retrieve values efficiently.

• Internal working of HashMap involves hashing the key to find the index of the bucket where the key-value pair is stored.

• Lambda expressions are anonymous functions that allow you to pass behavior as an argument to a method.

Axios is a popular JavaScript library used for making HTTP requests.

• Axios is commonly used in frontend applications to communicate with backend servers.

• It supports promises and can be used in both browser and Node.js environments.

• Example: axios.get('https://api.example.com/data')

• Friend function is a function that is not a member of a class but has access to its private and protected members.

• It is declared with the keyword 'friend' in C++.

• Example: class A { friend void friendF...read more

try catch and finally are keywords used in exception handling in programming languages.

• try block contains the code that may throw an exception

• catch block catches the exception thrown by the try block and handles it

• finally block contains the code that is executed regardless of whether an exception is thrown or not

• try-catch-finally is used to handle errors and prevent program crashes

• Example: try { //code that may throw an exception } catch (Exception e) { //handle the exception...read more

Servlet and JSP life cycle involves initialization, request processing and destruction.

• Servlet life cycle includes init(), service() and destroy() methods.

• JSP life cycle includes translation, compilation, initialization, and request processing.

• Servlet container manages the life cycle of servlets and JSPs.

• Servlet and JSP objects are created and initialized during initialization phase.

• During request processing phase, servlet and JSP objects handle client requests.

• During destruc...read more

JDBC is a Java API for connecting to and interacting with databases.

• JDBC stands for Java Database Connectivity.

• It provides a standard interface for connecting to databases.

• JDBC drivers are used to connect to specific databases.

• JDBC can be used to execute SQL queries and retrieve results.

• Example: Class.forName("com.mysql.jdbc.Driver"); Connection con=DriverManager.getConnection("jdbc:mysql://localhost:3306/mydb","username","password");