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public class Course{
  public String coursename;
  public Course(String c){
    coursename = c;
  }
}
public class Teacher {
  public String name, dept, add;
  public Teacher(String n, String d){
    name = n;
    dept = d;
  }
  public void addCourse(Course c){
    if(add==null)
    add = c.coursename;
    else
      add = add+ "\n"+c.coursename;
  }
  public void printDetail(){
    System.out.println("========================");
    System.out.println("Name: "+name);
    System.out.println("Department: "+dept);
    System.out.println("List of courses");
    System.out.println("========================");
    System.out.println(add);
    System.out.println("========================");
  }
}