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If a class has at least one abstract method, then the class must be declared abstract.

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💻 Practical Program
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💻 Program Code

 abstract class Human{
  abstract void mother();
}
class Woman extends Human{
	void mother(){
		System.out.println("I am Your Mother");
		}
	public static void main(String args[]){
	 Human obj = new Woman();
	 obj.mother();
	}
}

  
                        

🖥 Program Output

I am Your Mother
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