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Start your free trialmyrrhpanther
867 PointsJava Objects, Challenge 4 of 4
This is the error message:
./Main.java:11: error: constructor Forum in class Forum cannot be applied to given types; Forum forum = new Forum("Java"); ^ required: no arguments found: String reason: actual and formal argument lists differ in length ./Main.java:14: error: constructor ForumPost in class ForumPost cannot be applied to given types; ForumPost post = new ForumPost(author, "JavaCode", "Coding is awesome!"); ^ required: no arguments found: User,String,String reason: actual and formal argument lists differ in length Note: JavaTester.java uses unchecked or unsafe operations. Note: Recompile with -Xlint:unchecked for details. 2 errors
Thank you!
public class Forum {
private String topic;
public void setTopic(String topic){
this.topic = topic;
}
public String getTopic() {
return topic;
}
public void addPost(ForumPost post) {
System.out.printf("A new post in %s topic from %s %s about %s is available",
topic,
post.getAuthor().getFirstName(),
post.getAuthor().getLastName(),
post.getTitle()
);
}
}
public class User {
private String firstName;
private String lastName;
public User(String firstName, String lastName) {
this.firstName = firstName;
this.lastName = lastName;
}
public String getFirstName(){
return firstName;
}
public String getLastName(){
return lastName;
}
}
public class ForumPost {
private User author;
private String title;
private String description;
public void setVariables(User author, String title, String description){
this.author = author;
this.title = title;
this.description = description;
}
public User getAuthor() {
return author;
}
public String getTitle() {
return title;
}
public String getDescription() {
return description;
}
}
public class Main {
public static void main(String[] args) {
System.out.println("Beginning forum example");
if (args.length < 2) {
System.out.println("Usage: java Main <first name> <last name>");
System.err.println("<first name> and <last name> are required");
System.exit(1);
}
Forum forum = new Forum("Java");
User author = new User("John", "Smith");
// TODO: initialize the forum post with the user created above and a title and description of your choice
ForumPost post = new ForumPost(author, "JavaCode", "Coding is awesome!");
forum.addPost(post);
}
}
1 Answer
Raphaël Seguin
Full Stack JavaScript Techdegree Graduate 29,228 PointsHi, first I think you need to write a constructor function for your Forum class.
Raphaël
myrrhpanther
867 Pointsmyrrhpanther
867 PointsThank you! This solved my problem!