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Method clone() is not final, which allows object-hijack.
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.
| Class Name | clone not final (Java) | ||||||
|---|---|---|---|---|---|---|---|
| Significance | reliability | ||||||
| Mnemonic | JAVA.CLASS.CLONE.NF | ||||||
| Categories |
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| Availability | Available for Java only. |
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| Enabling | Checks for this warning class are enabled by
default. To disable them, add the following WARNING_FILTER rule to the
project configuration file.
WARNING_FILTER += discard class="clone not final (Java)" |
Check that clone() is only redefined in classes that implement java.lang.Cloneable. Check that the default implementation of clone() is only used for classes that have explicitly declared to implement java.lang.Cloneable.
The following configuration file parameters affect checks for this warning class.
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