Duplicate throws

Reports duplicate exceptions in a method throws list.

Example:

void f() throws Exception, Exception {}

After the quick-fix is applied:

void f() throws Exception {}

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.

DuplicateThrows

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 | Declaration redundancy

Use the Ignore exceptions subclassing others option to ignore exceptions subclassing other exceptions.

Inspection ID: DuplicateThrows

Inspection options

Here you can find the description of settings available for the Duplicate throws inspection, and the reference of their default values.

Ignore exceptions subclassing others

Option ID:

ignoreSubclassing

Default value:

Not selected

Suppressing Inspection

You can suppress this inspection by placing the following comment marker before the code fragment where you no longer want messages from this inspection to appear:

//noinspection DuplicateThrows

More detailed instructions as well as other ways and options that you have can be found in the product documentation:

IntelliJ IDEA 2025.3

Inspection Details
By default bundled with:	IntelliJ IDEA 2025.3, Qodana for JVM 2025.3,

Last modified: 03 December 2025