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java.lang.IllegalArgumentException: hostparameter is null at org.apache.commons.httpclient.HttpConnection.<init>( at org.apache.commons.httpclient.HttpConnection.<init>( at org.apache.commons.httpclient.SimpleHttpConnectionManager.getConnectionWithTimeout( at org.apache.commons.httpclient.HttpMethodDirector.executeMethod( at org.apache.commons.httpclient.HttpClient.executeMethod( at org.apache.commons.httpclient.HttpClient.executeMethod( at TrivialApp.main(