// This is a test case for issue 2247:
// https://github.com/typetools/checker-framework/issues/2247

import java.util.List;
import java.util.Map;
import org.checkerframework.checker.nullness.qual.NonNull;
import org.checkerframework.checker.nullness.qual.Nullable;

public class Issue2247 {

    static @NonNull class DeclaredClass {}

    class ValidUseType {

        // :: error: (type.invalid.annotations.on.use)
        void test1(@Nullable DeclaredClass object) {}

        // :: error: (type.invalid.annotations.on.use)
        @Nullable DeclaredClass test2() {
            return null;
        }

        // :: error: (type.invalid.annotations.on.use)
        void test3(List<@Nullable DeclaredClass> param) {
            @Nullable DeclaredClass object = null;
            // :: error: (type.invalid.annotations.on.use)
            @Nullable DeclaredClass[] array = null;
        }

        // :: error: (type.invalid.annotations.on.use)
        <T extends @Nullable DeclaredClass> void test4(@NonNull T t) {}

        void test5(Map<String, DeclaredClass> map) {
            @Nullable DeclaredClass value = map.get("somekey");
            System.out.println(value);
            if (value != null) {
                @NonNull DeclaredClass nonnull = value;
            }
        }
    }
}