Okay so I did search this question and a decent amount of results showed up. All of them seemed to have pretty different scenarios though and the solutions were different for ea
If your method is a static, you can call ClassName.methodName(arguments);
static
ClassName.methodName(arguments);
If your driver class not a static one you should create an instant of that class and call your method.
ClassName className=new ClassName(); className.displayEditParty(playerParty, tempEnemy);