Learn how to use mock objects to test Java web services, and what are the benefits and challenges of this approach.

Learn how to implement the equals and hashCode methods in Java to ensure consistent and logical object equality in object-oriented design.

What is the contract between equals() and hashcode()? Learn how these methods work together when comparing objects in Java.

This section of the objects unit is meant to continue using objects by looking at Java's foremost built-in objects: the String. Due to the nature of Java, certain elements of a Java program are going ...

I suspect this is a bug in devmode that compiles FieldVerifier.java against the super-source of java.util.Objects (and thus bytecode references the (string;string) overload) but then runs it against ...