I have 2 classes but they are not working? I am learning packages

clearimport java.util.Date;

import com.teamtreehouse.Treet;

public class Example {

public static void main(String[] args) {
  Treet treet = new Treet(
    "amitDhamankar",
    "Want to be famous? Simply tweet about Java and use" +
    " the hashtag #treet. I'll use yout tweet in a new" +
    "@treehouse code at data structures.",
     new Date(1468901376000L ));
  System.out.printf("This is a new Treet:  %s \n",treet);

}



}
                                                                                                              ```java

And the second class is

```java

package com.teamtreehouse;

public class Treet {
  private String mAuthor; 
  private String mDescription;
  private Date mCreationDate;

  public Treet(String author, String description, Date creationDate) {
    mAuthor = author;
    mDescription = description;
    mCreationDate = creationDate;
  }

  public String getAuthor() {
    return mAuthor;
  }

  public String getDescription() {
    return mDescription;
  }

  public Date getCreationDate() {
    return mCreationDate;
  }

}


I have written exactly the Craig Dennis has said but it's not working