java - How to instantiante object & call setter on same line?

Question

If I have an Employee class with a default constructor:

private String firstName;
public Employee(){}

and a setter:

public void setFirstName(String firstName){
    this.firstName = firstName;
}

Why does this attempt fail to instantiate and call the setter in the same line?

Employee employee = new Employee().setFirstName("John");

Answer 1

You can also use this syntax:

Employee employee = new Employee() {{
    setFirstName("John");
}};

Though keep in mind that it's going to create an anonymous inner class and probably isn't what you want.