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Object and Comparable

 
Ranch Hand
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MyEclipse IDE Spring Java
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Hi, ranchers

Object class does not implements the Comparable<E> interface then why following code do not throw ClassCastEXception?

 
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It does throw Class cast exception when more than one object is added to the set.
 
naveen yadav
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Why so?
 
Harsha Smith
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only when size is greater than 1 comparision is done between elements. see how it works in treeset class thats present in src.zip in your jdk folder.
 
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Sort algorithms work by comparing pairs of objects - you need two objects to be able to call compareTo. Until you have a pair of objects, it can't be called.
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