Why equals() method must be compatible with compareTo in java ?

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Hubert Jason · Answer

I think this link will clear the thingshttp://www.leepoint.net/data/expressions/22compareobjects.html

Abhishek Maheshwari · Answer

CompareTo() method in Java must be compatible with equals method in Java i.e. if two objects are equal via equals method compareTo method must return “0″ for them, failing this may result in some subtle bug when you store those objects in collection class like arraylist in java.

For details check equals() method must be compatible with compareTo in java

Anonymous User · Answer

compareTo method in Java must be compatible with equals method in Java i.e. if two objects are equal via equals method compareTo method must return “0” for them, failing this may result in some subtle bug when you store those objects in collection class like arraylist in java.

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Why equals() method must be compatible with compareTo in java ?

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