Day3課題2

q5の1~3まで終了

em-oop/src/Rectangle.java

@@ -0,0 +1,22 @@
+
+public class Rectangle extends Shape {
+	private double width; 
+	private double height; {
+		
+	}
+	
+	public Rectangle(double width, double height) {
+		super("四角形");
+		this.width = width;
+		this.height = height;
+	}
+	
+	public double area() {
+		return width * height;
+	}
+//	public void showInfo(){
+//    	super.showInfo();
+//		System.out.println("(半径:" + this.area + ")");
+//	}
+
+}