Programming Step by Step

Example: The following example demonstrates a multi-level hierarchy. 1 class Box 2 { private double width, height, depth; //data hiding...

Inheritance is a mechanism to inherit the properties of a class in another class. In the terminology of java, a class that is inherited is ...

This feature is not specific to object-oriented languages. The concept is exactly same as in case of a procedural language. Using this feat...

When a primitive type is passed to a method, it is done by use of call-by-value approach. In case of objects what is actually passed is an ...

We can have more than one method with the same name as long as they differ either in number of parameters or type of parameters. This is ca...

Java methods are equivalent to C++ functions. Objects can communicate with each other using methods. Java’s methods can be classified in th...

The following example explains what happens when we assign one object reference to another object reference. Example:  Box b1 = new Box...

The memory for Java objects is always allocated dynamically with the help of new operator. For example, an instance/object of the class Bo...

Some of the essential elements of the object-oriented programming are mentioned below: Abstraction Objects and Classes Three OOP Prin...