Some Question Of Running Hama-examples

[??????]

Hama:
   I have just installed hama and I'm running hama-examples in eclipse.But I 
have a few question.
   The steps that I run 'pagerank' are as follows:
   First:
   
   Then input some arguments:
   


    Then there are some errors.
    
    I don't know how to solve this problem.If you can take time to reply me, I 
will be very grateful to you.
    Best wishes.
liuping
   Sep 23,2013