Isogram J 1

 INDEX

-----------------------------------------------------

<!DOCTYPE html>

<html>

<head>

<meta charset="utf-8">

<title>Isogramma</title>

</head>

<body>

<form action="prova" method="post">

<div align="center">

<h1>Verifica Isogramma</h1>

<label >Inserisci la frase</label>

<input type="text" name="frase" style="width:400px">

<input type="submit" name="Verifica" value="Verifica">

</div>

<div align="center">

<% if(request.getAttribute("risposta")!=null)   {%>

<p><%= request.getAttribute("risposta") %>

<% } %>

</div>

</form>

</body>

</html>


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CLASSE MODEL


package it.cefi.models;

import java.util.Arrays;

public class Isogramma {

private String parola;

public Isogramma() {

}

public boolean controlloIsogramma(String stringa) {

stringa = stringa.toLowerCase();

int lunghezza = stringa.length();

char arr[] = stringa.toCharArray();

Arrays.sort(arr);

for (int i = 0; i < lunghezza - 1; i++) {

if (arr[i] == arr[i + 1])

return false;

}

return true;

}

public String getParola() {

return parola;

}

public void setParola(String parola) {

this.parola = parola;

}

}



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SERVLET 

package it.cefi.controllers;

import java.io.IOException;

import it.cefi.models.Isogramma;
import jakarta.servlet.RequestDispatcher;
import jakarta.servlet.ServletException;
import jakarta.servlet.annotation.WebServlet;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;

@WebServlet("/prova")

public class IsogrammaServlet extends HttpServlet {

private static final long serialVersionUID = 1L;

private Isogramma isogramma = new Isogramma();

@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

RequestDispatcher requestDispatcher = request.getRequestDispatcher("index.jsp");

String parola = new String();
parola = request.getParameter("frase");

if (isogramma.controlloIsogramma(parola)) {
request.setAttribute("risposta", parola + " è un isogramma");
} else {
request.setAttribute("risposta", parola + " non è un isogramma");
}


requestDispatcher.forward(request, response);
}

}

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