Java 8 generics + exceptions compile time error when using a lambda expression -

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A few days ago, I started refactoring some code to use the new Java 8 stream library. Unfortunately, I was running in a compile time error when the stream :: map is shown with a method that is declared to throw the normal e which is further specified as a runtime exception.

Sufficient interesting, compile time error away when I switch to using a method reference.

Is this a bug, or is not it similar to my Lambda expression?

(Also, I know that with the ----- p.execute (foo) parameter :: execute, there are additional parameters for the execute method in my actual code.)

Error message 

  Error: (32, 43) java: unreported exception E;   code  
 
  import java.util.ArrayList; Import java.util.list; Public Class JavaBug Test {Interface AbleToThrowException & lt; E expense & gt; {} Interface parameter {public & lt; Exception expands in E & gt; Object execution (AbleToThrowException & lt; E & gt; algo) e throws; } Interface ThrowsRuntimeException AbleToThrowException Extended & lt; RuntimeException & gt; {} Static throgantum exposition foo; Public static object manual lambda (parameter p) {return p. Execute (FU); } Public static zero main (string [] args) {List & lt; Parameter & gt; Parameters = new arreelist & lt; & Gt; (); Params.stream (). Map (P -> P. Execute (Foo)); // returns a compile time error. Params.stream () Map (JavaBugTest :: manualLambda); // works fine. OS: Windows X64  
  •  Java compiler version:  
  •  IDE: Intellij    
     
     
     A very simple solution is to clearly provide a type of argument for  parameter # execution (..) . 
     
      params.stream (). Map (p - & gt; p. & Lt; RuntimeException & gt; execute (foo)); // A compile time gives error without obviously logic, it seems that the JDK compiler can not predict a type of logic with reference to orientation, although it should be. It is a bug and should be reported in such a way that I have now notified it and I will update this information with new information.

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