iFogsim installation issue

[sultanyousuf]

Starting DCNS...
Exception in thread "main" java.lang.Error: Unresolved compilation problem:

at TestiFogsimP1/org.fog.application.Application.createApplication(Application.java:54)
at TestiFogsimP1/org.fog.test.perfeval.DCNSFog.createApplication(DCNSFog.java:229)
at TestiFogsimP1/org.fog.test.perfeval.DCNSFog.main(DCNSFog.java:68)