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.

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

With a few additions to the Java code for an Android app, you can retrieve the content of an image file on the user's file system.

The 30th anniversary of Java, being celebrated this year, offers a perfect opportunity to reflect on the remarkable changes ...

It contains no explicitly defined Java constructors. When no explicitly defined constructors exist, Java's virtual machine makes object creation possible by providing a default constructor to ...