Configurable Healing

How do i make it so you can put the amount of hearts like instead of healing 20 the player cant put their own amount like 10 or 5. How do i do this?

Code:java

if(args.length == 0){
                //satisfy = 0 args /satisfy Pwninz = 1 args
                player.sendMessage(ChatColor.GREEN + "You have been fed!");
                player.setFoodLevel(20);
            }if(args.length == 1){
                    if(player.getServer().getPlayer(args[0]) != null);
                    Player targetPlayer = player.getServer().getPlayer(args[0]);
                    player.sendMessage(ChatColor.GREEN + "They have been fed!");
                    targetPlayer.sendMessage(ChatColor.GREEN + "You have been fed!");
                    targetPlayer.setFoodLevel(20);

 

Not really sure if this would since setHealth takes in a doube but give this a try:

Code:java

        try{
            final double a = Integer.parseInt(args[0]);
            if (a > 20){
                player.setHealth(20.0);
            }else{
                player.setHealth(a);
            }
        }catch (NumberFormatException ex){
            player.sendMessage("Please use /heal <number>");
        }