Compiling Project using GWT 2.6.1 throwing issue

Hi,

I have created project using gwt 2.6.1,jdk 1.7 while compiling its throwing the below exception.Can any body help me how to fix this issue?

   Validating units:

      Ignored 2 units with compilation errors in first pass.

Compile with -strict or with -logLevel set to TRACE or DEBUG to see all errors.

   [ERROR] Errors in 'file:/D:/Sample/SampleWrk/widgets/src/main/java/com/sample/ui/proxy/ReqAdapter.java'

      [ERROR] Line 132: No source code is available for type java.lang.SecurityException; did you forget to inherit a required module?

      [ERROR] Line 140: No source code is available for type com.google.gwt.core.ext.typeinfo.NotFoundException; did you forget to inherit a required module?

      [ERROR] Line 147: No source code is available for type javax.xml.ws.WebServiceException; did you forget to inherit a required module?

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