Example of abstract class in java

Below Program explain example of abstract class in java


package com.thanu.welcome;

/*
 * Abstract Class Example.
 * Abstract class have Abstract method or method implementation.
 * It can't be instantated, But we can be subclassed. Also, we can access static method from abstract class
 * But Subclass must implemented abstract method of abstract class.Otherwise, it will be abstract
 * Different b/w Abstract class or interface.
 * In Abstract class can have method implemented, and abstract methods. But interface have only method definintion.
 * Interface have only static and Final Variables. But Absract class any one variable.
 * Situation for using abstract class:
 * In Object oriented Drawing Application:
 * Some Object have common behavior and some object have different behaviour.
 * For ex: Fillcolor,MoveTo,position is same for circle,rectanlge,triangle
 * draw,resize will be different behavior for circle, rechtangle, trigangle
 * Same behaviour can be implemented , different behaviour will be abstract method.
 */
abstract class MyAbstract {
int a,b;

//Method Implementation in Abstract Class
void fillColor (int x, int y) {

System.out.println("This is fillColor method " + x +" "+  y);
}
//Static method in MyAbstract Class
static void printValue() {
System.out.println("Just simply printing value static method");
}

//Method Definition in Abstract Class
abstract void draw(int x, int y);
abstract void resize(int x,int y);
}


public class ExampleAbstractClass extends MyAbstract {

public static void main (String arg[]) {

System.out.println("Many more welcome to our website");

//Calling static method from Abstract Method
MyAbstract.printValue();

//Create object for base class
ExampleAbstractClass instance = new ExampleAbstractClass();

//calling Abstract Class Implemented Method
instance.fillColor(10,20);

instance.draw(20,30);

instance.resize(40,50);



}

void draw (int x, int y) {
System.out.println("Implementation of draw method");
}
void resize(int x,int y) {
System.out.println("Implementation of resize method");

}


}