Abstract Java Example

Subclass inherit from animal class pig extends animal public void animalsound the body of animalsound is provided here system out println the pig says.

Abstract java example. Although abstract classes cannot be used to instantiate objects they can be used to create object references because java s approach to run time polymorphism is implemented through the use of super class references. Let s understand abstraction concept with java programming examples. Abstract class abstract class sum these two are abstract methods the child class must implement these methods public abstract int sumoftwo int n1 int n2.

Following is an example of the abstract method. Abstract method in java. Regular method public void disp system out println method of class sum.

Example public abstract int salary int empno hope this helps. Regular method public void sleep system out println zzz. Let the subclasses extend employee class and implement a calculatesalary method.

Position orientation line color fill color and behaviors for example. Create a pig object mypig. Class main public static void main string args pig mypig new pig.

In an object oriented drawing application you can draw circles rectangles lines bezier curves and many other graphic objects. Instead of curly braces an abstract method will have a semoi colon at the end. Moveto rotate resize draw in common.

Example abstract class abstract class animal abstract method does not have a body public abstract void animalsound. In java abstraction is achieved using abstract classes and interfaces. Employee contractor and fulltimeemployee example in this example we create an abstract employee class and which contains abstract calculatesalary method.