Non-final 'clone()' in secure context

Reports clone() methods without the final modifier.

Since clone() can be used to instantiate objects without using a constructor, allowing the clone() method to be overridden may result in corrupted objects, and even in security exploits. This may be prevented by making the clone() method or the enclosing class itself final.

Example:

  class Main implements Cloneable {
    @Override
    protected Object clone() throws CloneNotSupportedException {
      return super.clone();
    }
  }

Locating this inspection

By ID

Can be used to locate inspection in e.g. Qodana configuration files, where you can quickly enable or disable it, or adjust its settings.

NonFinalClone

Via Settings dialog

Path to the inspection settings via IntelliJ Platform IDE Settings dialog, when you need to adjust inspection settings directly from your IDE.

Settings or Preferences | Editor | Inspections | Java | Security

Inspection Details
By default bundled with:	IntelliJ IDEA 2024.2, Qodana for JVM 2024.2,
Can be installed with plugin:	Java, 242.22892

Last modified: 11 September 2024