checker/tests/optional/JdkCheck11.java

// @below-java11-jdk-skip-test

import java.util.Optional;
import org.checkerframework.checker.optional.qual.Present;

/** Test JDK annotations, for methods added after JDK 8. */
@SuppressWarnings("optional.parameter")
public class JdkCheck11 {

  String isEmptyTest1(Optional<String> pos, String fallback) {
    if (pos.isEmpty()) {
      return fallback;
    }
    return pos.get();
  }

  String orElseThrowTest1(@Present Optional<String> pos) {
    return pos.orElseThrow();
  }

  String orElseThrowTest2(Optional<String> mos) {
    // :: error: (method.invocation)
    return mos.orElseThrow();
  }

  String orElseThrowTestFlow(Optional<String> mos) {
    // :: error: (method.invocation)
    mos.orElseThrow();
    return mos.get();
  }
}