**You must override hashCode in every class that overrides equals.** If you fail to do so, your class will violate the general contract for hashCode, which will prevent it from functioning properly in ...

Effective Java（第3版）各章节的中英文学习参考（已完成）. Contribute to clxering/Effective-Java-3rd-edition-Chinese-English-bilingual development ...

You typically override hashCode() when also overriding equals() in your classes, to ensure that objects instantiated from these classes work properly with all hash-based collections.

Obi Ezechukwu 's blog High-Octane Java recently featured the post Compact Equals , which compares an implementation of a Java class's overridden equals method in traditional form versus one ...