378: Mainline

If you want to determine whether two class instances are the same instance, you use equals, which is a method rather than an operator. Note that the equals method determines whether two instances are the same instance, rather than equivalent instances:

public class Demonstrate { 
 public static void main (String argv[]) { 
  Movie m1 = new Movie(3, 4, 5); 
  Movie m2 = new Movie(3, 4, 5); 
  Movie m3 = new Movie(4, 5, 6); 
  System.out.println(m1.equals(m2)); 
  System.out.println(m2.equals(m3)); 
  m3 = m2 = m1; 
  System.out.println(m1.equals(m2)); 
  System.out.println(m2.equals(m3)); 
 } 
} 
--- Result --- 
false 
false 
true 
true