２段階目

2026-09-16 16:47:52 +09:00
parent 86a51ddb8e
commit ba035d4a3c
5 changed files with 51 additions and 5 deletions
--- a/em-oop/src/Shape.java
+++ b/em-oop/src/Shape.java
@@ -1,5 +1,5 @@

-public class Shape {
+public abstract class Shape {

 	private String name;
 	
@@ -8,13 +8,13 @@ public class Shape {
 		
 	}
 	
-	public double area() {
-		return 0.0;
+	public abstract double area();
+		//return 0.0;
 		
-	}
+	
 	
 	public void showInfo() {
-		System.out.println(this.name + "の面積は" + this.area() + "です");
+		//System.out.println(this.name + "の面積は" + this.area() + "です");
 		
 	}
 }