How to check if an entity is a living entity

Hey,
for my plugin I have to check whether an entity is an living entity.
I used the following:

Code:

public static void registerFrozenEntities(Location center) {
        //Get all entities
        List<Entity> entities = center.getWorld().getEntities();

        for(Entity ent : entities) {
            //If the entity is a non-living one
            if(How can I check for living entity?) {
                //If the entity is in the circle, freeze him
                if(ent.getLocation().distance(center) <= plugin.radius) {
                    frozenEntitiesList.put(ent, ent.getLocation());
                }
            }
        }
    };

But how can I check if it is an

1. LivingEntity
2. Player

Thanks!

 

Use the instanceof operator.

 

Works, thank you!
I should have a second look at Java basis