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\[[Bloch 08|AA. Java References#Bloch 08]\] Item 8: Obey the general contract when overriding equals \[[API 06|AA. Java References#API 06]\] [method equals()|http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html#equals(java.lang.Object)] |
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MET03-J. Return zero-length arrays instead of null values 09. Methods (MET) MET31-J. Ensure that hashCode() is overridden when equals() is overridden