HCL Group Senior Software Developer Interview Questions, Process, and Tips for Experienced

To add a new server in Spring Boot, you need to exclude the default Tomcat dependency and add the desired server dependency.

• Exclude the Tomcat dependency in the pom.xml file

• Add the desired server dependency in the pom.xml file

• Configure the server properties in the application.properties or application.yml file

Checking if a string is not null without using string != null.

• Use string.IsNullOrEmpty() method

• Use string.IsNullOrWhiteSpace() method

• Use string.Compare() method to compare with an empty string

• Use string.Length property to check if length is greater than 0

Yoda notation is a programming style where the order of a conditional statement is reversed.

• Used to avoid null pointer exceptions

• Improves readability for complex conditions

• Example: if ('red' === color) instead of if (color === 'red')

Convert a List of employees into a Map of Employees with ID as the key.

• Create an empty Map

• Iterate through the List of employees

• For each employee, add a key-value pair to the Map with ID as key and employee object as value