I was able to resolve that issue after seeing the tomcat log details. Actual problem relies here
1) There are two struts.xml & example.xml files in the classpath, so it is unable to start an application properly.
problem message in loggers :- Caused by: The package name 'roseindia' at location package -....... is already been used by another package at location package - .....
console message :- Error filterStart:
solution :- you can comment out the jar command of compile tag in the build.xml, so that there will be only one distinct files/package.
2) after that check the required jar files, if we wont get any result and errors,
solution: you just keep the jars mentioned in the struts2-blank.zip.
By following the above steps , I was able to resolve the issues.