A variable in Java can be made into a constant by adding the final keyword before the data type. This modifier means that the variable cannot be reassigned once it…
A member in a subclass can redefine a member in its superclass. This is most often done to give instance methods new implementations. To demonstrate we’ll override Rectangle’s getArea method…
Hi and welcome to Programming Video Tutorials. In this tutorial you’re going to learn about Java, which is a high level object oriented programming language developed by Sun Microsystems. The…
Before you can program in Java you need to download and install the JDK, or Java Development Kit, from Sun’s website. Among other things the JDK includes the Java compiler,…
Inheritance enables a class to reuse code from another class. In this example we have the class Apple that inherits from Fruit, specified by the extends keyword. Fruit then becomes…
Packages are used to avoid naming conflicts and to organize code files into different directories. The code file here is currently not included in a package and therefore belongs to…
