NoClassDefFoundError

Hello dear > I’m using smack extended jar as asmack for developing an android application , I’m trying to configure a connection ,I’m getting an exception as “java.lang.NoClassDefFoundError:org.jivesoftare.smack.ConnectionConfigureation” No error etc coming before compiling but when I run my applicaton this line config = new ConnectionConfiguration(server, port, serviceName); giving me above exception …

Please guide me what I’m doing wrong … I added jar file successfully …

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