Write a program in Java that asks the user to enter one of the following streams:

science, commerce, or arts. Based on the user's choice, the program should print the

courses available in that stream. The program should use conditional statements to

determine which courses are available, and it should use the toLowerCase$()$ method

to convert the user input to lowercase so that it can match the even if the user

enters the stream in uppercase or mixed case letters. If the user enters an invalid

stream, the program should print an error message.

Import the required packages, such as the java.util.Scanner package, which

will be used to take input from the user.

Create a new Scanner object to read the user's input.

Prompt the user to enter one of the streams: science, commerce, or arts.

Read the user's input and store it in a string variable.

Use the toLowerCase$()$ method to convert the user's input to lowercase.

Use conditional statements to determine which courses are available based on

the user's input.

print an error message indicating that the user has entered an invalid stream.

Close the Scanner object to release any resources it is using.

Run the program and test it by entering various streams $($in uppercase,

lowercase, or mixed case$)$ and checking if the correct courses are printed.

OUTPUT:

For the commerce stream, the following courses are available in first year:

Accountancy

Business Studies

Economics

Entrepreneurship

$>|$

Invalid stream. Please enter a valid stream $($science$,$ commerce, arts$)$