import java.util.Date;

public class Student {
  private final String name;
  private final String surname;
  private final Date birthDay;

  public Student(String name, String surname) {
      this.name = name;
      this.surname = surname;
      this.birthDay = new Date();
  }

  public static void main(String[] args) {
      Student s = new Student("John", "Lennon");
      print(s.toString());                                    // can remove this call to toString() to eliminate the warning in print()
  }

  private static void print(Object s) {
      System.out.println(s.toString());           /* "Redundant Call for String Argument (Java)" warning issued here 
                                                   * - s always holds a String at runtime. 
                                                   */ 
  }

  public String toString() {
      return "I'm " + name.toString() + surname.toString() + "." /* "Redundant Call for String Argument (Java)" warning issued here 
                                                   * - name and surname are already Strings. 
                                                   */ 
        + " My birthday is on " + birthDay.toString();
  }
}