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Finally, start Tomcat server and try to access URL World Struts2/This will produce the following screen − Now do not enter any required information, just click on Submit button.

So let us define a small action class Employee, and then add a method called validate() as shown below in file.Let us write main page JSP file index.jsp, which will be used to collect Employee related information mentioned above.The makes use of Struts tag, which we have not covered yet, but we will study them in tags related chapters.Hence, when validation fails and Struts 2 returns input, the Struts 2 framework will redisplay the file.Since, we used Struts 2 form tags, Struts 2 will automatically add the error messages just above the form filed.

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