I NEED HELP TO DRAW UML ACTIVITY DIAGRAM OR FLOW CHART ABOUT THIS PROBLEM TO DESIGN AND THE CODE TO RUN PROGRAM PLEASE!!!!

Problem3. (30 points) Days in Month. (Problem solving process required Please use UML activity diagram and UML class diagram for your design) Using the switch multiple-selection statement control statements to return the number of days in a month. Each month will be represented by a corresponding integer (1 is January, 2 is February,12 is December). There should be separate cases for months with 30 days (September, April, June, and November), months with 31 days (January, March, May, July, August, October, December) and February is its own case. Note: You must address Leap Year calculations. Makes sure you address the formula in your Problem Specification