[
https://issues.apache.org/jira/browse/GROOVY-10720?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Eric Milles resolved GROOVY-10720.
----------------------------------
Resolution: Fixed
https://github.com/apache/groovy/commit/e84c794741f4704df070a0cf8240a4f530ddf676
> Resolving wrong overloaded method?
> ----------------------------------
>
> Key: GROOVY-10720
> URL: https://issues.apache.org/jira/browse/GROOVY-10720
> Project: Groovy
> Issue Type: Bug
> Components: Static Type Checker
> Reporter: Thodoris Sotiropoulos
> Assignee: Eric Milles
> Priority: Major
>
> I have the following program
> {code}
> import java.util.Arrays;
> class Test {
> void test() {
> Double[] x = null;
> var y = Arrays.stream(x).map(d -> "fda").findFirst();
> }
> }
> {code}
> h3. Actual behavior
> {code}
> org.codehaus.groovy.control.MultipleCompilationErrorsException: startup
> failed:
> test.groovy: 7: [Static type checking] - Cannot return value of type
> java.lang.String for lambda expecting double
> @ line 7, column 41.
> y = Arrays.stream(x).map(d -> "fda").fin
> ^
> 1 error
> {code}
> h3. Expected behavior
> Compile successfully
> This issue stems from the fact that there are two relevant overloaded
> `stream()` methods in the class `java.utils.Arrays`. See the corresponding
> signatures below:
> * static DoubleStream stream​(double[] array)
> * static <T> Stream<T> stream​(T[] array)
> So the compiler chooses to call the first method, because it thinks that the
> first method is more specific than the second one. I don't know if this is a
> bug or a feature. FYI, javac resolves the second method.
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
