damageMethod.java

public class LivingThing() {
    // ...other code in the class...

    public void takeDamage(int amount) {
        this.health = this.health - amount;
        if (this.health <= 0) {
            print(this.name + " is dead!");
        }
    }
}

hero = LivingThing("Elsa", 50, 80, "Axe");
hero.takeDamage(10)  // Elsa takes 10 points of damage