Local variable type can be omitted

Reports local variable types that can be inferred from context and replaced with var.

Example:

  void test(InputStream s) {
    try (InputStream in = s) {}
  }

  void test(InputStream s) {
    try (var in = s) {}
  }

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.

RedundantExplicitVariableType

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.

Use the Only report when the variable type is obvious from the initializer checkbox to only report the types of variables initialized with a new expression, a type cast or a literal.

Example:

  int    codePointAt = "hello".codePointAt(1); // not reported
  Random random      = new Random();           // reported
  String s           = (String)object;         // reported

This inspection depends on the Java feature 'Local variable type inference', which is available since Java 10.

Inspection ID: RedundantExplicitVariableType

Inspection options

Here you can find the description of settings available for the Local variable type can be omitted inspection, and the reference of their default values.

Only report when the variable type is obvious from the initializer

Option ID:

suggestForLiteralsAndNewExpressions

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 RedundantExplicitVariableType

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

IntelliJ IDEA 2026.2

Inspection Details
By default bundled with:	IntelliJ IDEA 2026.2, Qodana for JVM 2026.2,

Last modified: 30 June 2026