Question: Instructions: Create a NetBeans Web project to demonstrate the use of HTML Form and JavaServer Pages. You can apply some CSS styles as you see

Instructions: Create a NetBeans Web project to demonstrate the use of HTML Form and JavaServer Pages. You can apply some CSS styles as you see fit. 1. Create an html page1 that functions as the interface of a Web calculator. It should include: ? A heading ? A form with two text inputs, four submit buttons (representing four math operators), and a reset button that can clear user inputs ? A table that holds form inputs ? A that is used to display the result processed by the corresponding JSP for the form. Learn the <iframe> tag from www.w3schools.com or from the Mortgage example posted on Canvas. 2. Create a JSP page that processes the Form in page1. ? Depending on the operator button clicked by the user, the JSP should process user inputs, calculate and display the result in the iframe at the bottom of page1 as shown in the sample screenshot 1. ? The JSP should use try and catch blocks to handle potential exceptions. For example, if users leave the fields empty or enter a non-numerical input, an exception will be thrown. ? You should process the exception in the catch block by displaying a specific message informing users that X and Y must be numbers and calling the exceptions getMessage method to display general info of the exception (see sample screenshot 2). 3. Next, create an html page2, which is similar to page1 except that it calls a different JSP to process the form and presents the result in the JSP page, not inside the iframe. 4. Create a JSP that processes the Form in page2. ? Depending on the operator button clicked by the user, the JSP should process user inputs, calculate and display the result. ? This JSP uses an error page (another JSP file) to handle potential exceptions (sample screenshots 3 and 4). o Create the error page for the second JSP. This error page should display a specific message informing users that X and Y must be numbers. o This error page should call the exceptions getMessage method to display general info of the exception. o This error page should give users an option to go back to provide correct inputs. 5. In one of the html pages, discuss the following: ? If using JavaScript, what form data of the html page will you verify? Explain in detail. ? Why verifying form data using JavaScript is the preferred approach? Explain in detail.

Instructions: Create a NetBeans Web project to demonstrate the use of HTML

Sample screenshot 1 for page1 and JSP1 using iframe to display processing result Web Calculator Clear Result Web Calculator with Exception ITandling displaying result of the JSP 4.0+6.0-10.0 Sample screenshot 2 for page1 and JSP1 using iframe to display error messages Web Calculator Y ten Clear Resul Web Calculator with Exception Handling and Y ust be neabers, try agala gut Enor For input string e <iframe> displaying error messages of the JSP Sample screenshots 3 and 4 of the 2nd JSP page and its error page Web Calculator with Error Page 4.0+ 6.0-10.0 2nd JSP page An error occurred while processing your request Please enter a number for x and a number for y and then select an arithmetic operator Input Error: For input string:"ten" click here to try again JSP error page Sample screenshot 1 for page1 and JSP1 using iframe to display processing result Web Calculator Clear Result Web Calculator with Exception ITandling <iframe> displaying result of the JSP 4.0+6.0-10.0 Sample screenshot 2 for page1 and JSP1 using iframe to display error messages Web Calculator Y ten Clear Resul Web Calculator with Exception Handling and Y ust be neabers, try agala gut Enor For input string e <iframe> displaying error messages of the JSP Sample screenshots 3 and 4 of the 2nd JSP page and its error page Web Calculator with Error Page 4.0+ 6.0-10.0 2nd JSP page An error occurred while processing your request Please enter a number for x and a number for y and then select an arithmetic operator Input Error: For input string:"ten" click here to try again JSP error page

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