Hello PlZ code in Java and use IntelliJ IDEA to code this

This is for A Dungeons and Dragons program im creating, i also did provide of the UML package diagram i hope it helps

create a dice roller that can be called from npc and player. This dice roller will need the boolean

of if the npc or player has proficency in the skill, weapon, or saving throw. If that boolean is true, their profiecency bonus

will be added to the roll. The dice roller will also need to add their ability score modifier to the roll, regardless of proficeincy.

If The roll was a saving throw or ability check, the output should be returned $($in integer form$)$ to the screen

$.$ If the roll was an attack roll, the total for the attack roll will be

displayed on the screen just like the saving throw and ability check, but will also have damage displayed. Damage is calculated by taking

in either a players weapon or a monsters weapon. Each weapon will have a assigned die type. EX$)$ short bow an eight sided die.

Small weapons:$$Use a D$4$ die for damage rolls$$

Larger weapons:$$Use a D$6$ or D$8$ die for damage rolls$$

Biggest weapons:$$Use a D$10$ or D$12$ die for damage rolls

$$ The D$20$ is used for all attacks, skills, and saves.

$$ The D$100$ is used for random tables.

$$ The D$12,$ D$10,$ D$8,$ D$6,$ and D$4$ are used for everything else, usually healing and damage.

If you need more info plz let me know