rosjava_core build failed could not resolve dependencies (pls fast help)

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Hey,

I'm just trying to install rosjava_core with this tutorial

http://rosjava.github.io/rosjava_core...

http://rosjava.github.io/rosjava_core...

I have no problems with the installation in the first tutorial, but in the second tutorial i can't execute

./gradlew install

It says:

$ ./gradlew install ./gradlew install :apache_xmlrpc_common:compileJava

FAILURE: Build failed with an exception.

• What went wrong: Could not resolve all dependencies for configuration ':apache_xmlrpc_common:compile'.

  Could not resolve org.apache.commons:com.springsource.org.apache.commons.httpclient:3.1.0. Required by: org.ros.rosjava_core:apache_xmlrpc_common:0.1.6 java.lang.NullPointerException (no error message)

• Try: Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

BUILD FAILED

Total time: 1.609 secs

Do you have any solutions please?