• Home
• com.github.sanity4j
• sanity4j
• 1.8.1
• source code
• HE_EQUALS_USE_HASHCODE.html

×

Project download

Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance.
Project price only 1 $

You can buy this project and download/modify it how often you want.

resources.report.rules.findbugs.HE_EQUALS_USE_HASHCODE.html Maven / Gradle / Ivy

HE: Class defines equals() and uses Object.hashCode() (HE_EQUALS_USE_HASHCODE)
 This class overrides equals(Object), but does not
  override hashCode(), and inherits the implementation of
  hashCode() from java.lang.Object (which returns
  the identity hash code, an arbitrary value assigned to the object
  by the VM).  Therefore, the class is very likely to violate the
  invariant that equal objects must have equal hashcodes.

If you don't think instances of this class will ever be inserted into a HashMap/HashTable,
the recommended hashCode implementation to use is:
public int hashCode() {
  assert false : "hashCode not designed";
  return 42; // any arbitrary constant will do
  }