Can't understand this error???

package com.teamtreehouse;
public class Example {

    public static void main(String[] args) {
        System.out.println("We are making a new Pez Dispenser.");
    PezDispenser dispenser = new PezDispenser("Yoda");
    System.out.printf("the dispenser character is %s\n",
                      dispenser.mCharacterName);

      if(dispenser.isEmpty()){
        System.out.println("It is currently empty");
      }
      System.out.println("Loading...");
      dispenser.load();
      if(!dispenser.isEmpty()){
        System.out.println("It is no longer empty");
      }
      while(dispenser.dispense()) {
        System.out.println("Chomp!");
      }
      if(dispenser.isEmpty()) {
        System.out.println("Ate all the pez");
      }
    }
}

public class PezDispenser {
  public static final int MAX_PEZ = 12;
  private String mCharacterName;
  private int mPezCount;


  public PezDispenser(String characterName) {
    mCharacterName = characterName;
    mPezCount = 0;
  }

  public boolean dispense() {
    boolean wasDispensed = false;
    if(!isEmpty()) {
      mPezCount--;
      wasDispensed = true;
    }
    return wasDispensed;
  }

  public boolean isEmpty() {
    return mPezCount == 0;
  }

  public void load() {
    mPezCount = MAX_PEZ;
  }

  public String getCharacterName() {
    return mCharacterName;
  }
}