Unhandled Exception error unresolved compilation
<pre><code>public void useSkill(Champion target, int skillIndex, boolean enemy) throws UtilitiesException {
    if (champSkills[skillIndex].getManaCost() &gt; this.currentMana) {
        throw new RequirmentNotMetException("Not Enough mana");
    }
</code></pre>

<p>I would like to throw a <code>requirmentNotMetexception</code> (which <code>extends</code> the <code>utilitiesException</code>) with message "not enough mana".</p>

<pre><code>Exception in thread "main" java.lang.Error: Unresolved compilation problem: 
    Unhandled exception type UtilitiesException

    at eg.edu.guc.lol.game.champions.Tank.useSkill(Tank.java:27)
    at eg.edu.guc.lol.game.champions.asfasf.main(asfasf.java:33)
</code></pre>

<p>I want to use exceptions  to show the user that the champion has no mana instead of using an if/else statement checking the mana of the champion and printing not enough mana.</p>
