[Soot-list] Error in running soot in eclipse

[Kelvin Nyakundi]

java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at ca.mcgill.sable.soot.launching.SootThread.run(SootThread.java:138)
Caused by: java.lang.RuntimeException: Could not load classfile:
java.util.concurrent.ConcurrentMap
at soot.coffi.Util.resolveFromClassFile(Util.java:75)
at soot.CoffiClassSource.resolve(CoffiClassSource.java:39)
at soot.SootResolver.bringToHierarchy(SootResolver.java:215)
at soot.SootResolver.bringToSignatures(SootResolver.java:239)
at soot.SootResolver.bringToBodies(SootResolver.java:280)
at soot.SootResolver.processResolveWorklist(SootResolver.java:150)
at soot.SootResolver.resolveClass(SootResolver.java:124)
at soot.Scene.tryLoadClass(Scene.java:417)
at soot.Scene.loadBasicClasses(Scene.java:990)
at soot.Scene.loadNecessaryClasses(Scene.java:1061)
at soot.Main.run(Main.java:167)
at soot.Main.main(Main.java:141)
... 5 more
any help with this
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