The example of mutable data issue

Main.java

public class Main {	
  public static void main(String[] args) {

    String name = "Charlie";
    int money = 100;
    int[] coordinate = {0, 0};

    UserData data = new UserData();
    data.name = name;
    data.money = money;
    data.coordinate = coordinate;

    PersonalBank bank = new PersonalBank(data); // now we create a bank of Charlie

    UserData firstTimeData = bank.getUserData();
    firstTimeData.print(); // Charlie has $100, he is at (0,0)

    name = "Andy";
    money = 200;
    coordinate[0] = 10;
    coordinate[1] = 20;

    UserData secondTimeData = bank.getUserData();
    secondTimeData.print(); // Charlie has $100, he is at (10,20)
    // WTF? We never change the coordinate of Charlie in he's bank! Why he moves?
  }
}

PersonalBank.java

public class PersonalBank {
  private UserData userData;

  public PersonalBank(UserData data) {
    this.userData = data;
  }

  public UserData getUserData() {
    return this.userData;
  }
}

UserData.java

// The DS Used to store the data, like bean.
public class UserData {
  String name; // immutable
  int money; // immutable
  int[] coordinate; // mutable, size should = 2.

  /**
   * A convenience way to show data. 
   */
  public void print() {
    System.out.println(name + " has $" + money
        + ", he is at (" + coordinate[0] + "," + coordinate[1] + ")");
  }
}