Choose an option: vowel cha cters
EXECUTE
Options:
Vowel characters.
Length of string.
(When the web page runs, if the interface is not the same as above, will not be considered for grading)
Assume users fill the value into the textfield (called str).
When users click "EXECUTE" button, the browser makes a request to /execute using Get method (The Servlet is configured in web.xml) (0.5 point):
a. Check validate input str: If users enter str string that is empty or spaces string, show the error text "Input string is invalid!" to servlet. (1.0 point)
b. Execute:
- If users choose "Length of string" option, count the number of characters of the string str, then output the result to servlet. (0.5 point)
(Evomala ste- "Hallo world"utsut 11
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