Exception in thread "main" java.lang.NoClassDefFoundError:

Exception in thread "main" java.lang.NoClassDefFoundError:

I am trying to run a java program and I am getting the following run time
error.The error is shown below.
Exception in thread "main" java.lang.NoClassDefFoundError:
org/apache/http/params/SyncBasicHttpParams
at
org.apache.http.impl.client.DefaultHttpClient.createHttpParams(DefaultHttpClient.java:157)
at
org.apache.http.impl.client.AbstractHttpClient.getParams(AbstractHttpClient.java:448)
at
org.apache.http.impl.client.AbstractHttpClient.createClientConnectionManager(AbstractHttpClient.java:309)
at
org.apache.http.impl.client.AbstractHttpClient.getConnectionManager(AbstractHttpClient.java:466)
at
org.apache.http.impl.client.AbstractHttpClient.createHttpContext(AbstractHttpClient.java:286)
at
org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:851)
at
org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:805)
at
org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:784)
at
net.floodlightcontroller.core.internal.PacketStreamerClient.registerForPackets(PacketStreamerClient.java:90)
at
net.floodlightcontroller.core.internal.PacketStreamerClient.main(PacketStreamerClient.java:51)
Caused by: java.lang.ClassNotFoundException:
org.apache.http.params.SyncBasicHttpParams
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 10 more
The error is java.lang.NoClassDefFoundError
Now the Obvious reason of NoClassDefFoundError is that a particular class
is not available in Classpath, so we need to add that into Classpath or we
need to check why it's not available in Classpath if we are expecting it
to be.
Now the files that I have added to the classpath are the following.
export CLASSPATH=$(JARS=(./lib/*.jar); IFS=:; echo "${JARS[*]}")
export
CLASSPATH=$CLASSPATH:~/.m2/repository/org/apache/httpcomponents/httpclient/4.0.1/httpclient-4.0.1.jar
export
CLASSPATH=$CLASSPATH:~/.m2/repository/org/apache/httpcomponents/httpcore/4.0.1/httpcore-4.0.1.jar
export
CLASSPATH=$CLASSPATH:~/.m2/repository/commons-logging/commons-logging/1.1.1/commons-logging-1.1.1.jar
export CLASSPAHT=$CLASSPATH:~/ms_thesis/ONOS/httpcore-4.1.jar
#export CLASSPATH=$CLASSPATH:~/ms_thesis/ONOS/lib/httpclient-4.2.jar
export CLASSPATH=$CLASSPATH:~/google-gson-2.2.4/gson-2.2.4.jar
What jar file should I add to find
"org/apache/http/params/SyncBasicHttpParams" I am very new to java and
don't know how to debug this issue.