how is toString method used in this question

[Sneha Kapoor]

 

class DVDInfo implements Comparable<DVDInfo> {
String title;
String genre;
String leadActor;
DVDInfo(String t, String g, String a) {
title = t; genre = g; leadActor = a;
}
public String toString() {
return title + " " + genre + " " + leadActor + "\n";
}
public int compareTo(DVDInfo d) {
return title.compareTo(d.getTitle());
}
public String getTitle() {
return title;
}
// other getters and setters
}

   

how is toString method used in this question

Source K&B book.Page 553

[kaushik vira]

Hello Sneha,

As toString method is method of object class... it`s always used to format the output of object.. when you say

System.out.println(obj);

obj.toString() method get called.. and the result of the method will be printed in out stream..

[Prasad Kumbhare]

In this code example, toString() method has been overridden. So instead of printing object's name (it doesn't print object's name by the way), it will print custom message. In this example ,

DVDInfo d = new DVDInfo("Java","Ranch","Group");
System.out.print(d);

Output of this would be "Java Ranch Group"

Hope this helps.

Thanks.