Classes, fields, methods, constructors, and objects are the building blocks of object-based Java applications. This Java tutorial teaches you how to declare classes, describe attributes via fields ...

After compiling the source code (javac City.java) and running the application (java City), you would observe null for name and 0 for population. The new operator zeroes an object’s object ...

We could move all the code from the SliceablePerson class into PersistentPerson if we wanted to minimize the number of java source files and/or give the appearance of having a two level domain. The ...

Concurrency in Java is the ability of multiple threads to execute in a coordinated manner within a program. While concurrency can lead to more efficient use of resources, it introduces ...

Good object-oriented design sometimes takes a back seat to a need to get things done, and the single responsibility model gets thrown out the window. Then, out of nothingness, the God object emerges.