Using the struts fr a mework, suitable for beginners, the equivalent of a validation, there is only one interface

HelloWordStruts2
................\.classpath
................\.project
................\.settings
................\.........\.jsdtscope
................\.........\org.eclipse.jdt.core.prefs
................\.........\org.eclipse.wst.jsdt.ui.superType.container
................\.........\org.eclipse.wst.jsdt.ui.superType.name
................\build
................\.....\classes
................\.....\.......\com
................\.....\.......\...\tutorialspoint
................\.....\.......\...\..............\struts2
................\.....\.......\...\..............\.......\HelloWorldAction.class
................\.....\.......\struts.xml
................\src
................\...\com
................\...\...\tutorialspoint
................\...\...\..............\struts2
................\...\...\..............\.......\HelloWorldAction.java
................\...\struts.xml
................\WebContent
................\..........\helloWorld.jsp
................\..........\index.jsp
................\..........\META-INF
................\..........\........\MANIFEST.MF
................\..........\WEB-INF
................\..........\.......\classes
................\..........\.......\lib
................\..........\.......\...\asm-3.3.jar
................\..........\.......\...\asm-commons-3.3.jar
................\..........\.......\...\asm-tree-3.3.jar
................\..........\.......\...\commons-fileupload-1.3.jar
................\..........\.......\...\commons-io-2.0.1.jar
................\..........\.......\...\commons-lang3-3.1.jar
................\..........\.......\...\commons-logging-1.1.3.jar
................\..........\.......\...\freemarker-2.3.19.jar
................\..........\.......\...\javassist-3.11.0.GA.jar
................\..........\.......\...\log4j-1.2.17.jar
................\..........\.......\...\ognl-3.0.6.jar
................\..........\.......\...\struts2-core-2.3.15.3.jar
................\..........\.......\...\xwork-core-2.3.15.3.jar
................\..........\.......\web.xml

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