//eg17_Course class, to show "aggregation"
//fields use instance of "eg17_TextBook" class and instance of "eg17_Instructor" class

public class eg17_Course
{
	private String courseName;
	private eg17_Instructor instructor;
	private eg17_TextBook textbook;
	
	
	//constructor
	public eg17_Course (String name, eg17_Instructor instr, eg17_TextBook text)
	{
		courseName = name;
		instructor = new eg17_Instructor(instr);
		textbook = new eg17_TextBook(text);
	}
	
	public String toString()
	{
		String str = "\nCourse Name: "+courseName + "\n\nInstructor Information:\n"+instructor + "\n\nTextbook Information:\n"+textbook;
		return str;
	}
}