jarhoo是一个很棒的地方

jarhoo是一个很棒的根据类名找jar包的地方，　。
在写程序的时候，我反正是经常遇到某一个类声明不知道是哪一个jar包的，比如某一个开源包报告了
java.lang.NoClassDefFoundError: javax/servlet/http/HttpSessionListener
错误，搞得满世界找。
有了jarhoo好点，它声称“Searches for jar files or fully qualified java classnames usually performed under 2 seconds. Package or non-qualified classname searches may take around 10 seconds ”，只要你将javax.servlet.http.HttpSessionListener输入搜索框，他就会帮你找到各种各样的jar包，如：
The results for the Java classname of javax.servlet.http.HttpSessionListener are:

Class Name	Jar File Name	Application Name
javax.servlet.http.HttpSessionListener	geronimo-spec-servlet-2.4-rc4.jar	Ibiblio Maven Repository
javax.servlet.http.HttpSessionListener	geronimo-spec-j2ee-1.4-rc3.jar	Ibiblio Maven Repository
javax.servlet.http.HttpSessionListener	servletapi-2.4.public_draft.jar	Ibiblio Maven Repository
javax.servlet.http.HttpSessionListener	servlet.jar	Acegi Security 0.6 for Spring Framework (with dependencies)
javax.servlet.http.HttpSessionListener	servlet.jar	Eclipse SDK 3.0.1
javax.servlet.http.HttpSessionListener	servlet.jar	JBoss 3.2.5
javax.servlet.http.HttpSessionListener	servlet.jar	JBuilder 2005 Enterprise
javax.servlet.http.HttpSessionListener	servlet.jar	Spring Framework 1.1 (With Dependencies)
javax.servlet.http.HttpSessionListener	servlet.jar	WebWork 2.1.6
javax.servlet.http.HttpSessionListener	servlet.jar	XOM 1.0b6
javax.servlet.http.HttpSessionListener	servlet-api-2.3.jar	Ibiblio Maven Repository
javax.servlet.http.HttpSessionListener	servletapi-2.4-20030804.000000.jar	Ibiblio Maven Repository
javax.servlet.http.HttpSessionListener	geronimo-spec-servlet-2.4-rc2.jar	Ibiblio Maven Repository
javax.servlet.http.HttpSessionListener	j2ee.jar	J2EE 1.4 SDK and Sun Java System Application Server Platform Edition 8 Update 1
javax.servlet.http.HttpSessionListener	j2ee.jar	Websphere Application Server v5.1 Trial
javax.servlet.http.HttpSessionListener	servletapi-2.4-20040521.jar	Ibiblio Maven Repository
javax.servlet.http.HttpSessionListener	geronimo-spec-j2ee-1.0-M1.jar	Ibiblio Maven Repository
javax.servlet.http.HttpSessionListener	geronimo-spec-servlet-2.4-rc3.jar	Ibiblio Maven Repository
javax.servlet.http.HttpSessionListener	servlet-api.jar	JBoss 3.2.5

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