not able to run library jar file in SoapUI free version

i created a soap.demo.jar file and placed it in C:\Program Files\eviware\soapUI-3.6.1\bin\ext. I am not still able to access the methods. Is there anything i am doing wrong. Also is there a way i can see if SoapUI picked up soap.demo.jar or due to some error it is not recognizing

error message
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org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed: Script4.groovy: 9: unable to resolve class soapui.demo @ line 9, column 1. import soapui.demo; ^ org.codehaus.groovy.syntax.SyntaxException: unable to resolve class soapui.demo @ line 9, column 1. at org.codehaus.groovy.ast.ClassCodeVisitorSupport.addError(ClassCodeVisitorSupport.java:148) at org.codehaus.groovy.control.ResolveVisitor.visitClass(ResolveVisitor.java:1250) at org.codehaus.groovy.control.ResolveVisitor.startResolving(ResolveVisitor.java:148) at org.codehaus.groovy.control.CompilationUnit$6.call(CompilationUnit.java:574) at org.codehaus.groovy.control.CompilationUnit.applyToSourceUnits(CompilationUnit.java:814) at org.codehaus.groovy.control.CompilationUnit.doPhaseOperation(CompilationUnit.java:511) at org.codehaus.groovy.control.CompilationUnit.processPhaseOperations(CompilationUnit.java:487) at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:464) at groovy.lang.GroovyClassLoader.doParseClass(GroovyClassLoader.java:306) at groovy.lang.GroovyClassLoader.parseClass(GroovyClassLoader.java:287) at groovy.lang.GroovyShell.parseClass(GroovyShell.java:727) at groovy.lang.GroovyShell.parse(GroovyShell.java:739) at groovy.lang.GroovyShell.parse(GroovyShell.java:766) at groovy.lang.GroovyShell.parse(GroovyShell.java:757) at com.eviware.soapui.support.scripting.groovy.SoapUIGroovyScriptEngine.compile(SoapUIGroovyScriptEngine.java:148) at com.eviware.soapui.support.scripting.groovy.SoapUIGroovyScriptEngine.run(SoapUIGroovyScriptEngine.java:93) at com.eviware.soapui.impl.wsdl.teststeps.WsdlGroovyScriptTestStep.run(WsdlGroovyScriptTestStep.java:148) at com.eviware.soapui.impl.wsdl.panels.teststeps.GroovyScriptStepDesktopPanel$RunAction$1.run(GroovyScriptStepDesktopPanel.java:274) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source) 1 error
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*********script*****************
package soapui.demo;

public class Greeting {


String myName;

Greeting(String who)
{
myName=who;
}

String salute()
{
return myName;

}

static String salute(String who)
{
return "Hello "+who;
}

}
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