Comparable Interface

Objects that have an ordering are compared using the compareTo() method.

9. Nearly Same Strings, but Different Lengths



Answer:
"bugbear"
.compareTo
("bugbear")
zero
"bugbear"
.compareTo
("Bugbear")
NOT zero
"Zorba"
.compareTo
("Zorba!")
NOT zero
"mushroom"
.compareTo
("mush room")
NOT zero
"TOAD"
.compareTo
("TOAD")
zero






Nearly Same Strings, but Different Lengths





    

    

    

        

            

                

            

        

    













    





    





    
Rule 2: If string A is a prefix of string B, then A.compareTo(B) < 0.
If string B is a prefix of string A, then A.compareTo(B) > 0.
"bat".compareTo("batcave") < 0
"apple".compareTo("applesauce") < 0
"BAT".compareTo("BATCAVE") < 0
"batcave".compareTo("bat") > 0
"applesauce".compareTo("apples") > 0
"BATCAVE".compareTo("BAT") > 0
In using this rule you need to pay attention to case. "BAT" is not a prefix of "batcave".
There are yet more rules.







Question 9:
Decide on the value returned by compareTo():
Comparison
Zero, Negative, or Positive
"bugbear"
.compareTo
("bugbear")
"bug"
.compareTo
("bugbear")
"pepper"
.compareTo
("peppermint")
"toadstool"
.compareTo
("toad")
"cat"
.compareTo
("caterpillar")