Hi - working on my Java homework and I'm having difficult with the following

Add Skillset 1. Prompt the user for the skillset to add. A skillset can be any String. Examples of skillsets 2. Update the data structure and then provide a response to the logged in user indicating 3. If the user enters the same skillset multiple times, the duplicate skillsets should not be are: "java" "software design", "databases", etc. that their skillset has been noted (e.g. "Java has been added to your skillsets.") saved Remove Skillset 1. Prompt the user for a skillset to remove. 2. Remove the entered skillset from the logged in user's skillsets 3. gnore the request if the entered skillset never existed for the user. List Skillsets 1. Loop through each skillset for the logged in user and print each skillset to the console 2. The skillsets need to be printed in alphabetical order