Unable to do maven build for Core Annotator Project

[kamesh231]

While trying to do a MavenBuild for Ontology-Annotator-Core project. I hit with this error

Exception in thread "main" java.lang.NoClassDefFoundError: com/google/common/base/Strings at org.sonatype.nexus.maven.staging.deploy.DeployLifecycleParticipant.getPluginByGAFromContainer(DeployLifecycleParticipant.java:238) at org.sonatype.nexus.maven.staging.deploy.DeployLifecycleParticipant.getNexusMavenPluginFromContainer(DeployLifecycleParticipant.java:182) at org.sonatype.nexus.maven.staging.deploy.DeployLifecycleParticipant.getBuildPluginsNexusMavenPlugin(DeployLifecycleParticipant.java:163) at org.sonatype.nexus.maven.staging.deploy.DeployLifecycleParticipant.afterProjectsRead(DeployLifecycleParticipant.java:95) at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:266) at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:193) at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:106) at org.apache.maven.cli.MavenCli.execute(MavenCli.java:863) at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:288) at org.apache.maven.cli.MavenCli.main(MavenCli.java:199) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289) at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229) at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415) at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356) Caused by: java.lang.ClassNotFoundException: com.google.common.base.Strings at org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy.loadClass(SelfFirstStrategy.java:50) at org.codehaus.plexus.classworlds.realm.ClassRealm.unsynchronizedLoadClass(ClassRealm.java:271) at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:247) at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:239) ... 18 more

I tried adding the Guava Jar too in the library and added this entry in POM.xml file-

com.google.guava guava 18

Is there anything else I need to do. Could someone help