大名鼎鼎的java动态脚本语言。已经通过了sun的认证

				package groovy.util;								import org.apache.tools.ant.BuildException;				import org.apache.tools.ant.Task;				import org.codehaus.groovy.runtime.InvokerHelper;								public class SpoofTask extends Task {					private int foo;								    public SpoofTask() {				        super();				        SpoofTaskContainer.spoof("SpoofTask ctor");				    }				    				    public void setFoo(final int i) {				    	foo = i;				    }				    								    public void execute() throws BuildException {				        SpoofTaskContainer.spoof("begin SpoofTask execute");				        SpoofTaskContainer.spoof("tag name from wrapper: " + getWrapper().getElementTag());				        // don't rely on Map.toString(), behaviour is not documented				        SpoofTaskContainer.spoof("attributes map from wrapper: " 				        		+ InvokerHelper.toMapString(getWrapper().getAttributeMap()));				        SpoofTaskContainer.spoof("param foo: " + foo);				        				        SpoofTaskContainer.spoof("end SpoofTask execute");				    }								}