JAVA

spigot heal player

if (!player.isDead()) {
	try {
		player.setHealth(player.getHealth()+hpToHeal);
	} catch (Exception exception) { exception.printStackTrace(); }
}

spigot heal player

//Set health to maximum(20 = 10 Hearts)
player.setHealth(20);

//Add a specified amount to the current healt
if(player.getHealth() + specifiedAmount <= 20){
	player.setHealth(player.getHealth + specifiedAmount); 
}