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boolean equals(Object) and interfaces

1 reply. Most recent reply: Jan 27, 2003 7:06 PM by Jim

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Adelbert Groebbens

Posts: 1
Nickname: adelbert
Registered: Jan, 2003

boolean equals(Object) and interfaces Posted: Jan 24, 2003 9:23 AM
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does 
boolean equals(Object)
belongs in some interfaces or should it never be used in interfaces ?

what if an object that is going to implementing such an interface has already another 
equals
method ?

what is a good way to seperate and
implement the following (for an object implementing
a given interface) :
- equality as far as the information related to the interface
is concerned
- equality as far as all information in the object is
concerned

Adelbert Groebbens


Re: boolean equals(Object) and interfaces Posted: Jan 27, 2003 7:06 PM
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Posted by: Jim    Posts: 1 / Nickname: weejim / Registered: Jan, 2003
boolean equals(Object)
belongs to java.lang.Object

equals(Object) is meant to compare an objects not interfaces

you may want to override the
public int hashCode()
from java.lang.Object too.

see javadocs for java.lang.Object for more detailed.


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