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https://issues.apache.org/jira/browse/GROOVY-11493?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Eric Milles closed GROOVY-11493.
--------------------------------
Resolution: Duplicate
> RuntimeError when implementing interfaces with conflicting default methods
> --------------------------------------------------------------------------
>
> Key: GROOVY-11493
> URL: https://issues.apache.org/jira/browse/GROOVY-11493
> Project: Groovy
> Issue Type: Bug
> Components: Static Type Checker
> Reporter: Thodoris Sotiropoulos
> Priority: Minor
>
> I have the following program
> {code:java}
> interface A {
> default void m() {
> System.out.println("here");
> }
> }
> interface B {
> default void m() {
> System.out.println("there")
> }
> }
> interface C extends B, A {}
> class Test implements C {
> public void test() {
> this.m();
> }
> public static void main(String[] args) {
> Test x = new Test();
> x.test();
> }
> } {code}
> h3. Actual behavior
> The code compiles, but there's a runtime error
> {code:java}
> Exception in thread "main" java.lang.AbstractMethodError: Receiver class Test
> does not define or inherit an implementation of the resolved method 'void
> m()' of interface B.
> at Test.test(groovy109.groovy:17)
> at Test.main(groovy109.groovy:22)
> {code}
> h3. Expected behavior
> The code should have been rejected
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