Upload astronomical images to Astrometry.net to identify objects. Use SIMBAD to find object properties and links to other databases. Explore Aladin to visualize and investigate surrounding objects.

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. Copying objects ...

Classes and objects in Java must be initialized before they are used. You’ve previously learned that class fields are initialized to default values when classes are loaded, and that objects are ...