Help needed with the code

So there are a couple issues that I will address, challenge 2 asks you to create the member variables, assign the values to the member variables from the constructor, and add the appropriate getters, you did the first two correct but you have an issue with your getters.

Lets step through your code: (I will look at the first name but the same applies to the last name)

public void getFirstName(String mFirstName)
{
    System.out.printf(" first name %s"+mFirstName);
}

First, we want to return a string so the method is not void. Remember this is the return type and you are saying we are not going to return anything. The value there should be switched to String. Also, we do not need to accept a parameter like you are asking for (String mFirstName). Getters are about getting information, you would need provide the first name for a setter (opposite of a getter, used to set a variable). So hopefully that part makes sense, we don't need a parameter because we do not know it, we are asking the object to give US the name. Lastly, you are not returning, you are only printing. We need a return statement because we may want to use the variable we get here wherever we called the method from. Please let me know if you need anymore clarification on this and I'd be happy to help. Your new methods should look like this:

public String getFirstName() {
    return mFirstName;
}
public String getLastName() {
    return mLastName;
}

For the last challenge: There is an issue with this line:

ForumPost post = new ForumPost("adri","java", "funprogram");`

Here is what the compiler says: ./Example.java:12: error: incompatible types: String cannot be converted to User ForumPost post = new ForumPost("adri","java", "funprogram");

So we have a hint, String cannot be converted to user. That is because you specified a string "adri" instead of a user Object. Remember our ForumPost constructor:

public ForumPost(User author, String title, String description){
  mAuthor = author;
    mTitle = title ; 
    mDescription = description ; 
  }

It wants a User, String, String. You are passing it a String, String, String. You need to pass it the user object you created so it looks like this:

ForumPost post = new ForumPost(author,"java", "funprogram");

where the author variable was the variable you defined the line before:

User author = new User("adrian","tennison");

Sorry for the long winded answer but hope that helps! Let me know if any other issues arise!