How to implement hashCode() whenever an equals() is implemented
public boolean equals(Object obj) {
// TODO Add the following, if required
// && format == docDelResponse.getFormat()
// && viewType == docDelResponse.getViewType() && type ==
// docDelResponse.getType()
// && inclCertifiedCopy == docDelResponse.isInclCertifiedCopy()
// && inclNonPatentLiterature == docDelResponse.isInclNonPatentLiterature()
// && inclNonUSReferences == docDelResponse.isInclNonUSReferences()
// && inclUSReferences == docDelResponse.isInclUSReferences()
if (obj != null && obj instanceof DocumentDeliveryResponse) {
DocumentDeliveryResponse docDelResponse = (DocumentDeliveryResponse) obj;
if (identifier != null && identifier.equals(docDelResponse.getIdentifier())) {
return true;
}
}
return false;
}
/**
* @see java.lang.Object#hashCode()
*/
public int hashCode() {
if(identifier != null) {
return identifier.hashCode();
} else {
return super.hashCode();
}
}
they are using the standard
Object.hashCode(). This means that it is highly likely that two "equal" objects
are having different hash codes.
Please let me know how i have to implement hashCode() whenever an equals() is implemented
Thanks
