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  2. Groovy
  3. Error handling
  4. Unused 'catch' parameter

Unused 'catch' parameter

Last modified: 03 December 2024

Reports catch parameters that are unused in their corresponding blocks. This inspection will not report any catch parameters named "ignore" or "ignored".

Example:

try {
    def arr = new int[3]
    arr[5] = 5
} catch(Exception ex) {
    println('Catching the exception')
}

Here the parameter ex is never used in catch block.

After the quick-fix is applied:

try {
    def arr = new int[3]
    arr[5] = 5
} catch(Exception ignored) {
    println('Catching the 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.

GroovyUnusedCatchParameter
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 | Groovy | Error handling

Inspection Details

By default bundled with:

IntelliJ IDEA 2024.3, Qodana for JVM 2024.3,

Can be installed with plugin:

Groovy, 243.23126