Optional.get() is called without isPresent() check

Reports calls to get() on an Optional without checking that it has a value.

Calling Optional.get() on an empty Optional instance will throw an exception.

Example:

  void x(List<Integer> list) {
    final Optional<Integer> optional =
      list.stream().filter(x -> x > 10).findFirst();
    final Integer result = optional.get(); // problem here
  }

Locating this inspection

By ID

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OptionalGetWithoutIsPresent

Via Settings dialog

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Settings or Preferences | Editor | Inspections | Java | Probable bugs

This inspection depends on the Java feature 'Stream and Optional API' which is available since Java 8.

Availability

By default bundled with: IntelliJ IDEA 2024.1, Qodana for JVM 2024.1,
Can be installed with plugin: Java, 241.18072

Last modified: 18 June 2024