###The hashCode Contract Quoting the source: The general contract of hashCode is: Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode ...

Java hashCode () and equals () Methods ==================================== The hashCode () and equals () methods have been defined in Object class which is parent class for all java classes. For this ...

If you are fortunate enough to be using JDK 7 , the newly available Objects class is the obvious ( at least to me ) choice for implementing the "common" Java object methods such as equals (Object ...

The HashMap tutorial also includes some useful code snippets that help developers understand what's going on with a Java HashMap under the covers. For example, the following code used in the tutorial ...