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Java Java Data Structures - Retired Organizing Data Interfaces

Posted by Tony Brackins
Tony Brackins
28,766 Points

equals(other)

in the following code used in the video:

if (equals(other)) { return 0;

shouldn't it read:

if (something.equals(other)) { return 0;

??

2 Answers

Seth Kroger
Seth Kroger
56,413 Points
Seth Kroger
Seth Kroger
56,413 Points

There's an implicit 'this.' so: if (equals(other)) { return 0;

means: if (this.equals(other)) { return 0;

Because you call compareTo() from a Treet like this: aTreet.compareTo(otherTreet) 'aTreet' is 'this' inside the method.

Tony Brackins
Tony Brackins
28,766 Points

makes sense. thx!

Patrick Koch
Patrick Koch
40,496 Points
Patrick Koch
Patrick Koch
40,496 Points

thx, cleaned things up!

Oziel Perez
Oziel Perez
61,321 Points
Oziel Perez
Oziel Perez
61,321 Points

Just out of curiosity, can you literally write in "this.equals(other)" for clarification purposes? or is there another keyword? (or not?)

prakashregmi
prakashregmi
3,474 Points
prakashregmi
prakashregmi
3,474 Points

I was confused in this part. Thanks Seth for elaborating the code.