java.lang.NoClassDefFoundError: org/apache/lucene/search/Searcher

Hello,

I'm trying to implement a Solrj solution using both Solr and Lucene version 4.10.2. The simple code:
<code>
CoreContainer.Initializer initializer = new CoreContainer.Initializer();
CoreContainer coreContainer = null;
try

{ coreContainer = initializer.initialize(); }

catch (IOException | ParserConfigurationException | SAXException e)

{ System.out.println("Error with Solr initialization"); e.printStackTrace(); }

</code>

produces next error:

Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/lucene/search/Searcher
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:760)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:455)
at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
at java.net.URLClassLoader$1.run(URLClassLoader.java:367)
at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:360)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at org.apache.solr.core.SolrConfig.<init>(SolrConfig.java:132)
at org.apache.solr.core.SolrConfig.<init>(SolrConfig.java:70)
at org.apache.solr.core.CoreContainer$Initializer.initialize(CoreContainer.java:117)
at com.company.SolrRAndD.doEveryThing(SolrRAndD.java:58)

The lucene-core-4.10.2.jar is in classpath. Could you help me with that?

Thanks in advance.