JDK-8031195 : Support default and static interface methods in JDI, JDWP and JDB
  • Type: Bug
  • Component: core-svc
  • Affected Version: 1.8
  • Priority: P3
  • Status: Resolved
  • Resolution: Fixed
  • Submitted: 2014-01-06
  • Updated: 2017-05-17
  • Resolved: 2014-04-29
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JDK 8 JDK 9
8u20Fixed 9Fixed
Related Reports
Cloners :  
JDK-8042123 - Support default and static interface methods in JDI, JDWP and JDB
Relates :  
JDK-8040167 - JDWP spec for ClassType#InvokeMethod contradicts JLS
Relates :  
JDK-8035567 - ObjectReference.invokeMethod() on default method throws ClassCastException
Relates :  
JDK-8031379 - Release Note: com.sun.jdi.InterfaceType.invokeMethod() is missing
Description
Since JDK 8 it is possible to have static methods in interfaces. However, there is no way to execute them from debugger.
Static method in classes can be run by com.sun.jdi.ClassType.invokeMethod(). But there is missing corresponding com.sun.jdi.InterfaceType.invokeMethod().

In addition, when an invocation of a default method is attempted it results in error.
Comments
The fix caused build breakage. A new attempt to deliver the fix is JDK-8042121
29-04-2014
Release team: Approved for deferral.
07-01-2014
Requesting deferral. It's too late in the game to fix this issue - it requires CCC and changing the API docs accordingly.
07-01-2014
After discussion changing the priority to P3 - ILW = MMH The impact is lowered since it is not a breakage of specification per-se. There is no specification for InterfaceType.invokeMethod() yet.
07-01-2014
ILW = HMH -> P1 Impact H: It is impossible to invoke the default methods from the debugger; default methods are an integral part of Java 8 Likelihood M: This affects only the interface default methods and they are not that common yet Workaround H: It is not possible to workaround this problem
07-01-2014