質問編集履歴
1
マークダウンに記述
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@@ -5,41 +5,20 @@
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### 発生している問題・エラーメッセージ
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Rect クラスへのアクセスがエラーとなっている
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```
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エラーメッセージ
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Exception in thread "main" java.lang.IllegalAccessError: failed to access class Rect from class IfSample3 (Rect is in unnamed module of loader 'app'; IfSample3 is in unnamed module of loader com.sun.tools.javac.launcher.Main$MemoryClassLoader @16022d9d)
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at IfSample3.main(IfSample3.java:4)
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### 該当のソースコード
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class IfSample3 {
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public static void main(String[] args){
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-
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Shape s1 = new Rect(10.0, 5.0);
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showArea(s1);
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-
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Shape s2 = new Circle(3.0);
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showArea(s2);
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}
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static void showArea(Shape shape){
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System.out.println(shape.getArea());
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}
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}
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-
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-
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```
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```java
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//Shape.java
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-
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interface Shape{
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public double getArea();//面積を計算して返す抽象メソッド（シグネチャのみ定義）
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}
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-
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```
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```
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```java
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class Rect implements Shape{//Shapeを実装
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double width;
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@@ -54,8 +33,9 @@
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}
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}
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```
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-
```
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```java
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class Circle implements Shape{
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double radius;
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@@ -67,7 +47,29 @@
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return radius * radius * 3.14 ;
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}
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}
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```
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```java
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class IfSample3 {
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public static void main(String[] args){
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Shape s1 = new Rect(10.0, 5.0);
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showArea(s1);
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Shape s2 = new Circle(3.0);
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showArea(s2);
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}
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static void showArea(Shape shape){
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System.out.println(shape.getArea());
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}
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}
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```
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### 試したこと
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IfSample3のjava:4がエラーの表示が出ているのでスペルミスがないか確認
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