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Java Java Objects (Retired) Delivering the MVP Wrapping up

Benjamin Ing
Benjamin Ing
910 Points

syntax errors

i have syntax errors with my getter methods

ForumPost.java
public class ForumPost {
  private User mAuthor;
  private String mTitle;
  private String mDescription;

  public User getAuthor() {
    return mAuthor;
  }

  public String getTitle() {
    return mTitle;
  }

  // TODO: We need to expose the description
}
User.java
public class User {

    private String mFirstName;
    private String mLastName;

  public User(String firstName, String lastName) {
    mFirstName = firstName;
    mLastName = lastName;


  }

  public String getFirstName(){

   System.out.printf(firstName);

  }

  public String getLastName(){

    System.out.printf(lastName);
  }

}
Forum.java
public class Forum {
  private String mTopic;

  public Forum(String topic)
  {
     mTopic = topic;
  }

  public String getTopic() {
      return mTopic;
  }

  public void addPost(ForumPost post) {
      /* When all is ready uncomment this...
      System.out.printf("New post from %s %s about %s.\n",
                         post.getAuthor().getFirstName(),
                         post.getAuthor().getLastName(),
                         post.getTitle());
      */
  }
}
Example.java
public class Example {

  public static void main(String[] args) {
    System.out.println("Starting forum example...");
    if (args.length < 2) {
       System.out.println("first and last name are required. eg:  java Example Craig Dennis");
    }
    // Forum forum = new Forum("Java");
    // Take the first two elements passed args
    // User author = new User();
    // Add the author, title and description
    // ForumPost post = new ForumPost();
    // forum.addPost(post);
  }
}

3 Answers

Ken Alger
STAFF
Ken Alger
Treehouse Teacher

Benjamin;

In User.java your two getters are designed to return a String, you are not returning anything in the above code. Is that where your error is occurring?

Ken

Benjamin Ing
Benjamin Ing
910 Points

./User.java:11: error: cannot find symbol return firstName; ^ symbol: variable firstName location: class User ./User.java:14: error: cannot find symbol return lastName; ^ symbol: variable lastName location: class User 2 errors

Ken Alger
STAFF
Ken Alger
Treehouse Teacher

Benjamin;

Right. I don't see where you are returning either of those values. You are printing them, but not returning them.

Ken

Benjamin Ing
Benjamin Ing
910 Points

this is my code for the user class

User.java
public class User {
    private String mFirstName;
    private String mLastName;

  public User(String firstName, String lastName) {
    // TODO:  Set the private fields here
    mFirstName = firstName;
    mLastName = lastName;
  }
  public String getFirstName(){
    return firstName;
  }
  public String  getLastName(){
  return lastName;
  }
}
Ken Alger
STAFF
Ken Alger
Treehouse Teacher

1) I edited your latest User.java for markdown.

2) That looks quite a bit different than what you originally posted for User.java.

3) In your getter methods, shouldn't you be returning member variables? firstName and lastName are unknown in those methods (out of scope), thus the errors.

Post back if you are still stuck.

Ken