FULL PRODUCT VERSION :
java version "1.8.0_40-ea"
Java(TM) SE Runtime Environment (build 1.8.0_40-ea-b15)
Java HotSpot(TM) 64-Bit Server VM (build 25.40-b20, mixed mode)


A DESCRIPTION OF THE PROBLEM :
Referencing java.lang.management.ManagementFactory causes a ClassDefNotFoundError since build 15 of 1.8.0_40

REGRESSION. Last worked in version 8u25

ADDITIONAL REGRESSION INFORMATION:
java version "1.8.0_40-ea"
Java(TM) SE Runtime Environment (build 1.8.0_40-ea-b15)
Java HotSpot(TM) 64-Bit Server VM (build 25.40-b20, mixed mode)


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Run the attached code

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The program should execute without error
ACTUAL -
The program crashes

ERROR MESSAGES/STACK TRACES THAT OCCUR :
Exception in thread "main" java.lang.NoClassDefFoundError: sun/management/ExtendedPlatformComponent
        at java.lang.management.ManagementFactory.getPlatformMBeanServer(ManagementFactory.java:494)
        at NCDFE.main(NCDFE.java:5)


REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import java.lang.management.ManagementFactory;

public class NCDFE {
  public static void main(String... argv) throws Exception {
    ManagementFactory.getPlatformMBeanServer();
  }
}

---------- END SOURCE ----------

SUPPORT :
YES