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Method clone() does not call super.clone().
The clone() method is used to generate a clone of an object, that is, a distinct instance with the same behavior as the original one. The default implementation in java.lang.Object checks that the object to clone either implements the java.lang.Cloneable interface or throws a java.lang.CloneNotSupportedException.
In order to clone an object it is generally sufficient to implement java.lang.Cloneable and use the default implementation of clone(). It is also possible to override that default implementation. Note that a class that inherits the default implementation allows its subclasses to implement java.lang.Cloneable and clone its instances.
| クラス名 | Clone Call to Super is Missing (Java) | ||||||
|---|---|---|---|---|---|---|---|
| 日本語クラス名 | Clone Call to Super is Missing (Java) | ||||||
| クラス分類 | 信頼性 (reliability) | ||||||
| ニーモニック | JAVA.CLASS.CLONE.CCSM | ||||||
| カテゴリー |
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| 対応言語 | Java で利用可能です。 |
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| 有効/無効設定 | このワーニングクラスのチェックはデフォルトで有効になっています。チェックを無効にするにはプロジェクト設定ファイル
(configuration file)に以下の WARNING_FILTER ルールを追加してください。
WARNING_FILTER += discard class="Clone Call to Super is Missing (Java)" |
// TestClone.java public class CloneWithoutSuper implements Cloneable { @override public Object clone() throws CloneNotSupportedException { // Clone call to super is missing (Java) warning issued here Object returnMe = new CloneWithoutSuper(); // ... } } public class MyClass extends CloneWithoutSuper{ @override public Object clone() throws CloneNotSupportedException { Object returnMe = super.clone(); // ... } }
Check that clone() is implemented calling super.clone() instead of creating a new object of the class in which is declared.
設定ファイルの以下のパラメータがこのワーニングクラスのチェックに影響します。