Redundant type arguments

Reports calls to parametrized methods with explicit argument types that can be omitted since they will be unambiguously inferred by the compiler.

Using redundant type arguments is unnecessary and makes the code less readable.

Example:

List<String> list = Arrays.<String>asList("Hello", "World");

A quick-fix is provided to remove redundant type arguments:

List<String> list = Arrays.asList("Hello", "World");

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.

RedundantTypeArguments

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 | Verbose or redundant code constructs

Inspection ID: RedundantTypeArguments

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 RedundantTypeArguments

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