Copying objects is a common Java programming operation that has one serious trap. Here's how to avoid copying from an object reference and only copy the instance and values you want.

This article shows how to use the Apache Commons JXPath component to easily query complex Java object trees for data using the XPath expression language. It covers both basic and advanced features ...

In simple terms, a Java object becomes available for garbage collection when it is no longer in use by the application. 3. What does mark-and-sweep mean? You can break garbage collection in Java into ...

The invocation of the length () method on the null object triggers the NullPointerException. How to avoid this RuntimeException in your Java programs? Initialize every object you create before you use ...

Java provides a means to conveniently serialize data to maintain its integrity as it's sent over a network. Attackers can exploit vulnerabilities in the deserialization process if there aren't ...