JSP and beans

Otna · 30-10-2006 05:18PM #1

I badly need some help with this. It is a project for college it is a number guess game I had the code working but then something happened and I keep getting this error:

javax.servlet.ServletException: com/detiel/advjhtp1/jsp/beans/Check
(wrong name: Check)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:272)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

and I don't know what it means Can any one help.
The code for the JSP is:

<jsp:useBean id = "check" scope = "session"
class = "com.detiel.advjhtp1.jsp.beans.Check"/>

<html>
<head>
<title>Number Guess</title>
</head>

<body>
<% if (check.getWin()) { %>

You've won after <%= check.getNumGuesses() %> tries.<p>

<% check.reset(); %>

Do you want to <a href="numguess.jsp">try again</a>?

<% } else if (check.getNumGuesses() == 0) { %>

Pick a number between 1 and 10.<p>

<form method=get>
Enter your guess. <input type=text name=guess>
<input type=submit value="Submit">
</form>

<% } else { %>

Nope. Try <b><%= check.getTip() %></b>.

You have made <%= check.getNumGuesses() %> guesses.<p>

I'm thinking of a number between 1 and 10.<p>

<form method=get>
Enter your guess. <input type=text name=guess>
<input type=submit value="Submit">
</form>

<% } %>

</body>
</html>

and the code for the Bean is:

import java.util.*;

public class Check
{

int answer;
boolean win;
String tip;
int numGuesses;

public Check()
{
reset();
}

public void setGuess(String guess)
{
numGuesses++;

int i;

i = Integer.parseInt(guess);

{
i = -1;
}

if (i == answer)
{
win = true;
}
else if (i == -1)
{
tip = "a number next time";
}
else if (i < answer)
{
tip = "higher";
}
else if (i > answer)
{
tip = "lower";
}
}

public boolean getWin()
{
return win;
}

public String getTip()
{
return "" + tip;
}

public int getNumGuesses()
{
return numGuesses;
}

public void reset()
{
answer = Math.abs(new Random().nextInt() % 100) + 1;
win = false;
numGuesses = 0;
}
}

TabulaRasa · 30-10-2006 08:21PM

Looks like you're class Check is in the default package but your JSP is attempting to use com.detiel.advjhtp1.jsp.beans.Check. So it looks like you need to declare your class in a package.

Civilian_Target · 31-10-2006 01:24AM

Yeah, it's not actually finding your bean. Check your paths match your specfied package, etc. Have you considered using a JNDI lookup instead?

JSP and beans

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