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abstract class Shape{ abstract void draw(); } //In real scenario, implementation is provided by others i.e. unknown by end user class Rectangle extends Shape{ void draw(){System.out.println("drawing rectangle");} } class Circle1 extends Shape{ void draw(){System.out.println("drawing circle");} } //In real scenario, method is called by programmer or user class TestAbstraction1{ public static void main(String args[]){ Shape s=new Circle1();//In real scenario, object is provided through method e.g. getShape() method s.draw(); } }
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