Java’s equals() and hashcode() are two methods that work together to verify if two objects have the same value. You can use them to make object comparisons easy and efficient in your Java programs.

For example, the following code used in the tutorial overrides the JDK's standard equals() and hashCode() methods, forcing hash collisions that would not normally occur. The result clearly ...

Bug 6321873 explains that the hash code returned by System.identityHashCode(Object) is not guaranteed to be unique (it’s a hash code after all). That being stated, there are situations in which ...