[javac] Compiling 1 source file to C:\Program Files\Apache Software Foundation\Tomcat 5.0\webapps\struts2tutorial\WEB-INF\src\classes [javac] C:\Program Files\Apache Software Foundation\Tomcat 5.0\webapps\struts2tutorial\WEB-INF\src\java\net\roseindia\Struts2HelloWorld.java:2: cannot access com.opensymphony.xwork2.ActionSupport [javac] bad class file: C:\Program Files\Apache Software Foundation\Tomcat 5.0\webapps\struts2tutorial\WEB-INF\lib\xwork-2.0.1.jar(com/opensymphony/xwork2/ActionSupport.class) [javac] class file has wrong version 49.0, should be 48.0 [javac] Please remove or make sure it appears in the correct subdirectory of the classpath. [javac] import com.opensymphony.xwork2.ActionSupport; [javac] ^ [javac] 1 error