#All the prestuff like command sender setting n stuff and then the code:
if(getConfig().getBoolean("commands.basic.enabled")){
# Do stuff
} else {
# Do stuff if its disabled
}

#To disable stuff:
if(args.length == 2){
if(args[1] != "false" || args[1] != "true") {
#Do stuff if the state isn't true or false
# if not anything: return false else it'll continue
}
getConfig().set("commands." + args[0] + "enabled", args[1]);
return false;
}