043-抽象クラス-抽象クラスの配列　【新人エンジニアが最初に覚えたい100のJava文法】

public class MainClass {
	public static void main(String[] args) {
		Product[] productList = { new Printer("Printer",15000,26), new Computer("Computer",80000,3.9) };
		for(Product product: productList){
			product.showData();
		}
	}
}
abstract class Product {
	private String productName;
	private int price;
	public Product(String productName, int price) {
		this.productName = productName;
		this.price = price;
	}
	public abstract void showData();
}
class Printer extends Product {
	private int printSpeed;
	public Printer(String productName, int price, int printSpeed) {
		super(productName, price);
		this.printSpeed = printSpeed;
	}
	public void showData() {
		System.out.println(this.printSpeed);
	}
}
class Computer extends Product {
	private double clockFeq;
	public Computer(String productName, int price, double clockFeq) {
		super(productName, price);
		this.clockFeq = clockFeq;
	}
	public void showData() {
		System.out.println(this.clockFeq);
	}
}