Classi Astratte .txt

Classi Astratte :


Abstract class NomeClasse {

	abstract ...............;

}


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abstract class Figura{


	abstract public double clacolaArea();

}


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class Quadrato extends Figura {

	private double lato;
	
	

	public Quadrato(double lato){
	
	this.lato = lato;
}


public double calcolaArea(){
	return this.lato*4;
}