Application Error . UnsatisfiedLinkError

Application Error . UnsatisfiedLinkError

Am making an application in JavaFX, Wherein I am also using an RXTX-Serial
communication. Before starting the application, am getting an Application
Error as below :
UnsatisfiedLinkError:
com.sun.deploy.net.proxy.MSystemProxyHandler.init()Z
A dialogue box appears everytime I start the application. It doesn't
matter if select OK or Cancel or Close the window the application starts
after that. And all functions seem to be working ok. But when it gives an
another error anytime in between. The error is as described below :
Have no file for /usr/lib/jvm/java-7-openjdk-i386/jre/lib/netx.jar
Have no file for /usr/lib/jvm/java-7-openjdk-i386/jre/lib/plugin.jar
Have no file for /usr/lib/jvm/java-7-openjdk-i386/jre/lib/jfr.jar
Could you please tell me the meaning of this error or where I am making a
mistake.