asked on

Using package in JSP

hi!

I am trying to use package, but when I run it, I have this error.

class file contains wrong class: java.lang.RuntimeException
Please remove or make sure it appears in the correct subdirectory of the classpath.
bgColor = bgColor + Integer.toHexString(hw5.RanUtilities.randomInt(256));
^
1 error

I placed ColorTestOne.jsp under public_html dir and place RanUtilities.class under WEB-INF/classes/hw5/.
what did I do wrong?

This is ColorTestOne.jsp file
+++++++++++++++++++++++++++++++++++++++++++++=
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">

<HTML>
<HEAD>
<TITLE>Color Testing</TITLE>
</HEAD>

<%@ page import="hw5.RanUtilities" %>

<%!

private String ramdonColor(){

String bgColor="";
for(int i=0; i < 3; i++){
bgColor = bgColor + Integer.toHexString(hw5.RanUtilities.randomInt(256));
}
return "#"+bgColor;
}

%>

<%
String bgColor = request.getParameter("bgColor");
if ((bgColor == null) || (bgColor.trim().equals(""))) {
bgColor = "WHITE";
}
%>

<BODY BGCOLOR="<%= ramdonColor() %>">
<H2 ALIGN="CENTER">Testing a Background of "<%= ramdonColor() %>"</H2>
</BODY></HTML>

this is RanUtilities.java file
+++++++++++++++++++++++++++

package hw5;

public class RanUtilities {

/** A random int from 1 to range (inclusive). */

public static int randomInt(int range) {
return(1 + ((int)(Math.random() * range)));
}

public static void main(String[] args) {
int range = 10;
try {
range = Integer.parseInt(args[0]);
} catch(Exception e) { // Array index or number format
// Do nothing: range already has default value.
}
for(int i=0; i<100; i++) {
System.out.println(randomInt(range));
}
}
}

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kupra1

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rrz

> bgColor = bgColor + Integer.toHexString(hw5.RanUtilities.randomInt(256));
Did you try ?
bgColor = bgColor + Integer.toHexString(RanUtilities.randomInt(256));

dkim18

ASKER

I put it in other pkg and it worked even witout <%@ page import="hw5.RanUtilities" %>.
I don't know why...

thanks anyway