[R] Drawing garbled

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Hi:
       I am Chinese, I am developing a java application, and  deploy it  to tomcat 7.0.42, I use rJava to use the R, when I use the command line to start tomcat, the R drawing well done, see attachment histview.png,but when i use windows service to start tomcat, the R drawing bad, see attachment histview2.png, I don't why, can you give me a suggestion? My window OS is window 7 home, thanks your help!
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