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How do I deploy and run this JSP Web Application locally?

I am using Tomcat 6.0 through port 8282. My operating system is Windows XP. I am able to deploy and run other JSP Web Applications without errors. The attached (zipped) folder is located at I:\Program Files\Apache Software Foundation\Tomcat 6.0\webapps\ on my local machine. When I attempt to deploy and run the attached JSP Web Application locally (http://localhost:8282/DistanceCalculator2/distanceCalculator2.jsp), I get the error below. What is causing this error? Thank you in advance!

Note: I have added .txt extensions to the end of each file because the other filetypes (.jsp, .java, and .class) are not able to be uploaded here.

HTTP Status 500 - 
 
--------------------------------------------------------------------------------
 
type Exception report
 
message 
 
description The server encountered an internal error () that prevented it from fulfilling this request.
 
exception 
 
javax.servlet.ServletException: java.lang.NoClassDefFoundError: calc/DistanceCalc2 (wrong name: DistanceCalc2)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:274)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:803)

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DistanceCalculator2.zip

ASKER CERTIFIED SOLUTION

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ASKER

Thank you for the response and the positive words. I am now able to access my jsp, but when I click the Calculate button, I get the error below. My latest version is attached.

HTTP Status 404 - /DistanceCalculator2/DistanceCalculator2.jsp
 
--------------------------------------------------------------------------------
 
type Status report
 
message /DistanceCalculator2/DistanceCalculator2.jsp
 
description The requested resource (/DistanceCalculator2/DistanceCalculator2.jsp) is not available.

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DistanceCalculator2.zip

SOLUTION

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ASKER

If I use
<form method="post" action="distanceCalculator2.jsp">
nothing happens when I click on the Calculate button.

If I use
<form method="post">
nothing happens when I click on the Calculate button.

>nothing happens when I click on the Calculate button.
What do you mean by "nothing" ? Does the form submit a request ? No error mesages ? If you change to
action="someOtherPage.jsp"
does it go there ?

ASKER

>>>What do you mean by "nothing" ?
When I click the Calculate button, no output is displayed.

>>>Does the form submit a request ?
How do I determine whether a request was submitted?

>>>No error mesages ?
No error messages.

>>>>If you change to action="someOtherPage.jsp" does it go there ?
Yes, I moved currentTime.jsp to the same directory and it did go to currentTime.jsp.

>When I click the Calculate button, no output is displayed.
Is there anything in the page source in the browser ?

ASKER

When I right click on the page and select View Source, I see the following:


 
 
 
 
 
<html>
	<head><title>JSP Distance Calculator using EL Statements, JSTL, and a JavaBean</title> </head>
	<body>
		<font face="Verdana"><center><i>
		<h1>JSP Distance Calculator using EL Statements, JSTL, and a JavaBean</h1>
		</i></center></font>
	
		<form method="post" action="distanceCalculator2.jsp">
			<br>
			<font size="2" face="Verdana">
			Please enter the value of X1:
			<font color="blue">*</font>
			<input type="text" name="x1" length="7"/>		
			<br>
			</font>
 
			<font size="2" face="Verdana">
			Please enter the value of Y1:
			<font color="blue">*</font>
			<input type="text" name="y1" length="7"/>		
			<br>
			</font>
 
			<font size="2" face="Verdana">
			Please enter the value of X2:
			<font color="blue">*</font>
			<input type="text" name="x2" length="7"/>		
			<br>
			</font>
 
			<font size="2" face="Verdana">
			Please enter the value of Y2:
			<font color="blue">*</font>
			<input type="text" name="y2" length="7"/>		
			</font>
 
			<p>
			<input type="submit" value="Calculate"/>
			</p>
		</form>
 
		
			
 
			
 
			
 
			
 
			
				
	</body>
</html>

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I copy and pasted your last post and it displays in my browser(IE 7). You still see nothing in your browser window ?

ASKER

>>>>I copy and pasted your last post and it displays in my browser(IE 7). You still see nothing in your browser window ?

Did you copy and paste the html that I got from View Source? Are you able to get result for the distance between the two points? How?

>Did you copy and paste the html that I got from View Source?
Yes.
>Are you able to get result for the distance between the two points? How?
I didn't test that yet.

meanwhile add this inside your <c:choose> tag
<c:otherwise>
something is wrong, I'll keep looking
</c:othewise>

no add this
<c:otherwise>
rrz${distance2.status}rrz
</c:othewise>

ASKER

When I added the <c:otherwise> tag after the last <c:when> tag, and inside the <c:choose> tag, I get the following error:

HTTP Status 500 - 
 
--------------------------------------------------------------------------------
 
type Exception report
 
message 
 
description The server encountered an internal error () that prevented it from fulfilling this request.
 
exception 
 
org.apache.jasper.JasperException: /distanceCalculator2.jsp(94,3) The end tag "&lt;/c:othewise" is unbalan

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try again with my last post

ASKER

I still get the same error:

HTTP Status 500 -

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

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

org.apache.jasper.JasperException: /distanceCalculator2.jsp(94,3) The end tag "</c:othewise" is unbalanced

Below is what I have in the <c:choose> tag:

		<c:choose>
			<c:when test="${distance2.status == -1}">
				<hr/>
				Please input a value for X1.
			</c:when>
 
			<c:when test="${distance2.status == -2}">
				<hr/>
				Please input a value for Y1.
			</c:when>
 
			<c:when test="${distance2.status == -3}">
				<hr/>
				Please input a value for X2.
			</c:when>
 
			<c:when test="${distance2.status == -4}">
				<hr/>
				Please input a value for Y2.
			</c:when>
 
			<c:when test="${distance2.status == 1}">
				<hr/>
				<font face="Verdana"> <u>
				<h3> Output</h3>
				</u> </font>
 
				<font size="2" face="Verdana">
				X1 = ${distance2.x1} <br>
				Y1 = ${distance2.y1} <br>
				X2 = ${distance2.x2} <br>
				Y2 = ${distance2.y2} <br>
				</font>
 
				<br>
				<font size="3" face=Verdana" color="blue"> <b>
				The distance between (X1, Y1) and (X2, Y2) is 
				<fmt:formatNumber value="${distance2.distanceBetweenPoints}" 
						type="number" 
						maxFractionDigits="2"/>
			</c:when>
			<c:otherwise>
                     			rrz${distance2.status}rrz
			</c:othewise>
		</c:choose>

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SOLUTION

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ASKER

>>>>I made a typo

Sorry I didn't catch that one. Now I am seeing the same thing: I have the page, I am able to input the values, I click the Calculate button, and nothing happens. The only difference I see is the following at the bottom of the page, below the Calculate button: rrz()rrz. This is displayed before I click the Calculate button the first time.

ASKER

Is it something in the JavaBean? Are my setDistanceBetweenPoints( ) and calculateDistance( ) methods ok?

I guess I will try your web app in my Tomcat now.

SOLUTION

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ASKER

OK, I have added the web.xml file you posted. I wonder why I do not get that error.

SOLUTION

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ASKER

When I run this I get the following error:

HTTP Status 500 - 
 
--------------------------------------------------------------------------------
 
type Exception report
 
message 
 
description The server encountered an internal error () that prevented it from fulfilling this request.
 
exception 
 
org.apache.jasper.JasperException: /distanceCalculator2.jsp(3,0) The value for the useBean class attribute calc.DistanceCalc2 is invalid.

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ASKER

Nevermind, I have it working.

ASKER

What am I missing to display my output in the <c:choose> tag?

>What am I missing to display my output in the <c:choose> tag?
The output is displayed for me. What problem are you having with it ?

ASKER

I have most of it figured out now. I do have one more problem though.

With a call to calculateDistance( ); inside the getDistanceBetweenPoints( ) method, I am able to get a result for distanceBetweenPoints, but I am NOT able to check for user input.

Without a call to calculateDistance( ); inside the getDistanceBetweenPoints( ) method, I am able to check for user input, but I am NOT able to get a result for distanceBetweenPoints.

My most recent code is here:


// The JavaBean
// DistanceCalc2.java
 
package calc;
 
public class DistanceCalc2
{      
	// read-write properties
   private String x1;
   private String y1;
   private String x2;
   private String y2;
            
   // read-only properties
   private double distanceBetweenPoints;
    
  
	// default constructor
   //-----------------------------------------  
	public DistanceCalc2( )
	{
		
	}
   //-----------------------------------------  
		            
   // setter and getter methods
   //-----------------------------------------      
   public void setX1( String passedX1 )
   {
   	x1 = passedX1;
   }
   //-----------------------------------------            
   public String getX1( )
   {
      return x1;	
   }
   //-----------------------------------------      
   public void setY1( String passedY1 )
   {
   	y1 = passedY1;
   }      
   //-----------------------------------------            
   public String getY1( )
   {
   	return y1;
   }
   //-----------------------------------------            
   public void setX2( String passedX2 )
   {
         x2 = passedX2;
   }      
   //-----------------------------------------            
   public String getX2( )
   {
      return x2;
   }
   //-----------------------------------------            
   public void setY2( String passedY2 )
   {
  		y2 = passedY2;
   }      
   //-----------------------------------------            
   public String getY2( )
   {
  		return y2;
   }  
   //-----------------------------------------  
   public void setDistanceBetweenPoints( )
   {
   	calculateDistance( );
   } 
   //-----------------------------------------		    
   public double getDistanceBetweenPoints( )
   {
		//calculateDistance( );
     	return distanceBetweenPoints;
   }      
   //-----------------------------------------                  
   private void calculateDistance( )
   {
			
		distanceBetweenPoints = Math.sqrt( ( Double.parseDouble( x1 ) - Double.parseDouble( x2 ) ) * 
                                         ( Double.parseDouble( x1 ) - Double.parseDouble( x2 ) ) + 
                                         ( Double.parseDouble( y1 ) - Double.parseDouble( y2 ) ) * 
                                         ( Double.parseDouble( y1 ) - Double.parseDouble( y2 ) ) );		
	}
}
 
 
 
<%-- distanceCalculator2.jsp --%>
 
<jsp:useBean id="distance2" scope="page" class="calc.DistanceCalc2" />
<jsp:setProperty name="distance2" property="*" />
 
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt" %>
 
<html>
      <head><title>JSP Distance Calculator using EL Statements, JSTL, and a JavaBean</title> </head>
      <body>
      	<font face="Verdana"><center><i>
            	<h1>JSP Distance Calculator using EL Statements, JSTL, and a JavaBean</h1>
            	</i></center></font>
 
	<c:set var="x1" value="${distance2.x1}"/>
	<c:set var="y1" value="${distance2.y1}"/>
	<c:set var="x2" value="${distance2.x2}"/>
	<c:set var="y2" value="${distance2.y2}"/>
	<c:set var="distanceBetweenPoints" value="${distance2.distanceBetweenPoints}"/>
 
 
            	<form method="post" action="distanceCalculator2.jsp"/>
                  	<br>
                  	<font size="2" face="Verdana">
                  	Please enter the value of X1:
                  	<font color="blue">*</font>
                  	<input type="text" name="x1" length="7"/>            
              	    	<br>
                  	</font>
 
                  	<font size="2" face="Verdana">
                  	Please enter the value of Y1:
                  	<font color="blue">*</font>
                  	<input type="text" name="y1" length="7"/>            
                  	<br>
                  	</font>
 
                  	<font size="2" face="Verdana">
                  	Please enter the value of X2:
                  	<font color="blue">*</font>
                  	<input type="text" name="x2" length="7"/>            
                  	<br>
                  	</font>
 
                  	<font size="2" face="Verdana">
                  	Please enter the value of Y2:
                  	<font color="blue">*</font>
                  	<input type="text" name="y2" length="7"/>            
                  	</font>
 
                  	<p>
                  	<input type="submit" value="Calculate"/>
                  	</p>
            	</form>
 
	<c:if test="${pageContext.request.method=='POST'}">
            	<c:choose>
                  	<c:when test='${x1 == null}'>
                        		<hr/><br/>
			<font size="4" face=Verdana" color="red">
                        		Please input a value for X1.
			</font>
                  	</c:when>
 
                  	<c:when test='${y1 == null}'>
                        		<hr/><br/>
			<font size="4" face=Verdana" color="red">
                        		Please input a value for Y1.
			</font>
                  	</c:when>
 
                  	<c:when test='${x2 == null}'>
                        		<hr/><br/>
			<font size="4" face=Verdana" color="red">
                        		Please input a value for X2.
			</font>
                  	</c:when>
 
                  	<c:when test='${y2 == null}'>
                        		<hr/><br/>
			<font size="4" face=Verdana" color="red">
                        		Please input a value for Y2.
			</font>
                  	</c:when>
	
		<c:otherwise>
                                   	<hr/>
                        		<font face="Verdana"> <u>
                        		<h3>Output</h3>
                        		</u></font>
 
                        		<font size="4" face="Verdana" color="blue">
                        		X1 = ${x1} <br/>
                        		Y1 = ${y1} <br/>
                        		X2 = ${x2} <br/>
                        		Y2 = ${y2} <br/>
                        		</font>
 
                        		<br/><br/>
                        		<font size="4" face="Verdana" color="blue"> 
                        		The distance between (X1, Y1) and (X2, Y2) is 
                        		<fmt:formatNumber value="${distanceBetweenPoints}" 
                                    	type="number" maxFractionDigits="15"/> 
			</font>
                  	</c:otherwise>
            	</c:choose>
	</c:if>
 
	<font size="4" face="Verdana" color="green">
	<br/>
	<br/>
        	x1=${x1} 
	<br/>
	y1=${y1} 
	<br/>
	x2=${x2} 
	<br/>
	y2=${y2}
	<br/>
        	distanceBetweenPoints=${distanceBetweenPoints}
	<br/>
	</font>
 
      </body>
</html>

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ASKER

I got that part now. My getDistanceBetweenPoints( ) method now looks like this:

public double getDistanceBetweenPoints( )
{
            if( ( x1 != null ) && ( y1 != null ) && ( x2 != null ) && ( y2 != null ) )
            {
                  calculateDistance( );
            }
     return distanceBetweenPoints;
}

I know you recommended exception handling for letters being input. Where would I put the exception?

ASKER

Do I need to use the <%@ page errorPage> directive to handle the exception?

SOLUTION

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ASKER

I did redesign. I got rid of the status variable altogether. Below is my latest code including my attempt at exception handling.

// The JavaBean
// DistanceCalc2.java
 
package calc;
 
public class DistanceCalc2
{      
	// read-write properties
   private String x1;
   private String y1;
   private String x2;
   private String y2;
            
   // read-only properties
   private double distanceBetweenPoints;
	private String errorMessage;
    
  
	// default constructor
   //-----------------------------------------  
	public DistanceCalc2( )
	{
		
	}
   //-----------------------------------------  
		            
   // setter and getter methods
   //-----------------------------------------      
   public void setX1( String passedX1 )
   {
   	x1 = passedX1;
   }
   //-----------------------------------------            
   public String getX1( )
   {
      return x1;	
   }
   //-----------------------------------------      
   public void setY1( String passedY1 )
   {
   	y1 = passedY1;
   }      
   //-----------------------------------------            
   public String getY1( )
   {
   	return y1;
   }
   //-----------------------------------------            
   public void setX2( String passedX2 )
   {
         x2 = passedX2;
   }      
   //-----------------------------------------            
   public String getX2( )
   {
      return x2;
   }
   //-----------------------------------------            
   public void setY2( String passedY2 )
   {
  		y2 = passedY2;
   }      
   //-----------------------------------------            
   public String getY2( )
   {
  		return y2;
   }  
   //-----------------------------------------  
   public void setDistanceBetweenPoints( )
   {
   	calculateDistance( );
   } 
   //-----------------------------------------		    
   public double getDistanceBetweenPoints( )
   {
		if( ( x1 != null ) && ( y1 != null ) && ( x2 != null ) && ( y2 != null ) )
		{
			try 
			{
            Double.parseDouble( x1 );
            Double.parseDouble( y1 );
				Double.parseDouble( x2 );
            Double.parseDouble( y2 );
        	} 
			catch ( NumberFormatException nfe ) 
			{
            errorMessage = "Please enter a valid number: " + nfe.getMessage( );	
				setErrorMessage( errorMessage );
        	} 
			catch ( Exception e ) 
			{
           	errorMessage = "An error occured: " + e.getMessage( );
				setErrorMessage( errorMessage );
        	}
			
			calculateDistance( );
		}
     	return distanceBetweenPoints;
   }      
   //-----------------------------------------
   public void setErrorMessage( String passedErrorMessage )
   {
   	errorMessage = passedErrorMessage;
   }	
   //-----------------------------------------  
   public String getErrorMessage( )
   {
   	return errorMessage;
   } 
   //-----------------------------------------                  
   private void calculateDistance( )
   {			
		distanceBetweenPoints = Math.sqrt( ( Double.parseDouble( x1 ) - Double.parseDouble( x2 ) ) * 
                                         ( Double.parseDouble( x1 ) - Double.parseDouble( x2 ) ) + 
                                         ( Double.parseDouble( y1 ) - Double.parseDouble( y2 ) ) * 
                                         ( Double.parseDouble( y1 ) - Double.parseDouble( y2 ) ) );		
	}
}
  
//===================================
//===================================
 
<%-- distanceCalculator2.jsp --%>
 
<jsp:useBean id="distance2" scope="page" class="calc.DistanceCalc2" />
<jsp:setProperty name="distance2" property="*" />
 
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt" %>
 
<html>
      <head><title>JSP Distance Calculator using EL Statements, JSTL, and a JavaBean</title> </head>
      <body>
	<br/>
      	<font face="Verdana"><center><i>
            	<h2>JSP Distance Calculator using EL Statements, JSTL, and a JavaBean</h2>
            	</i></center></font>
 
	<c:set var="x1" value="${distance2.x1}"/>
	<c:set var="y1" value="${distance2.y1}"/>
	<c:set var="x2" value="${distance2.x2}"/>
	<c:set var="y2" value="${distance2.y2}"/>
	<c:set var="distanceBetweenPoints" value="${distance2.distanceBetweenPoints}"/>
	<c:set var="errorMessage" value="${distance2.errorMessage}"/>
 
 
            	<form method="post" action="distanceCalculator2.jsp">
                  	<br>
                  	<font size="2" face="Verdana">
                  	Please enter the value of X1:
                  	<font color="blue">*</font>
                  	<input type="text" name="x1" length="7"/>            
              	    	<br>
                  	</font>
 
                  	<font size="2" face="Verdana">
                  	Please enter the value of Y1:
                  	<font color="blue">*</font>
                  	<input type="text" name="y1" length="7"/>            
                  	<br>
                  	</font>
 
                  	<font size="2" face="Verdana">
                  	Please enter the value of X2:
                  	<font color="blue">*</font>
                  	<input type="text" name="x2" length="7"/>            
                  	<br>
                  	</font>
 
                  	<font size="2" face="Verdana">
                  	Please enter the value of Y2.
                  	<font color="blue">*</font>
                  	<input type="text" name="y2" length="7"/>            
                  	</font>
 
                  	<p>
                  	<input type="submit" value="Calculate"/>
                  	</p>
            	</form>
 
	<c:if test="${pageContext.request.method=='POST'}">
            	<c:choose>
                  	<c:when test='${x1 == null}'>
                        		<hr/><br/>
			<font size="4" face="Verdana" color="red">
                        		You did not enter a value for X1.
			</font>
                  	</c:when>
 
                  	<c:when test='${y1 == null}'>
                        		<hr/><br/>
			<font size="4" face="Verdana" color="red">
                        		You did not enter a value for X1.
			</font>
                  	</c:when>
 
                  	<c:when test='${x2 == null}'>
                        		<hr/><br/>
			<font size="4" face="Verdana" color="red">
                        		You did not enter a value for X1.
			</font>
                  	</c:when>
 
                  	<c:when test='${y2 == null}'>
                        		<hr/><br/>
			<font size="4" face="Verdana" color="red">
                        		You did not enter a value for X1.
			</font>
                  	</c:when>
 
		<c:otherwise>
                                   	<hr/>
                        		<font face="Verdana"> <u>
                        		<h3>Output</h3>
                        		</u></font>
 
                        		<font size="4" face="Verdana" color="blue">
                        		X1 = ${x1} <br/>
                        		Y1 = ${y1} <br/>
                        		X2 = ${x2} <br/>
                        		Y2 = ${y2} <br/>
                        		</font>
 
 
 
 
			<c:choose>
				<c:when test='${errorMessage != null}'>
					<br/>
					<font size="4" face="Verdana" color="red">
                        				${errorMessage}
					</font>
				</c:when>
			
				<c:otherwise>
                        				<br/>
                        				<font size="4" face="Verdana" color="blue"> 
                        				The distance between (X1, Y1) and (X2, Y2) is 
                        				<fmt:formatNumber value="${distanceBetweenPoints}" 
                                    			type="number" maxFractionDigits="15"/> 
				</font>
				</c:otherwise>
			</c:choose>
 
 
 
                  	</c:otherwise>
            	</c:choose>
	</c:if>
	
	<%--
	<font size="4" face="Verdana" color="green">
	<br/><br/>
        	x1=${x1} 
	<br/>
	y1=${y1} 
	<br/>
	x2=${x2} 
	<br/>
	y2=${y2}
	<br/>
        	distanceBetweenPoints=${distanceBetweenPoints}
	<br/>
	</font>
	--%>
 
      </body>
</html>

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ASKER

OK, it works like a charm. Thank you very much for taking the time to help me. Below is the working code:

// The JavaBean
// DistanceCalc2.java
 
package calc;
 
public class DistanceCalc2
{      
	// read-write properties
   private String x1;
   private String y1;
   private String x2;
   private String y2;
            
   // read-only properties
   private double distanceBetweenPoints;
   private int status = 0;
  
	// default constructor
   //-----------------------------------------  
	public DistanceCalc2( )
	{
		
	}
   //-----------------------------------------  
		            
   // setter and getter methods
   //-----------------------------------------      
   public void setX1( String passedX1 )
   {
   	x1 = passedX1;
   }
   //-----------------------------------------            
   public String getX1( )
   {
      return x1;	
   }
   //-----------------------------------------      
   public void setY1( String passedY1 )
   {
   	y1 = passedY1;
   }      
   //-----------------------------------------            
   public String getY1( )
   {
   	return y1;
   }
   //-----------------------------------------            
   public void setX2( String passedX2 )
   {
         x2 = passedX2;
   }      
   //-----------------------------------------            
   public String getX2( )
   {
      return x2;
   }
   //-----------------------------------------            
   public void setY2( String passedY2 )
   {
  		y2 = passedY2;
   }      
   //-----------------------------------------            
   public String getY2( )
   {
  		return y2;
   }  
   //-----------------------------------------  
   public void setDistanceBetweenPoints( )
   {
   	calculateDistance( );
   } 
   //-----------------------------------------		    
   public double getDistanceBetweenPoints( )
   {
		if( ( x1 != null ) && ( y1 != null ) && ( x2 != null ) && ( y2 != null ) )
		{
			try
			{
				calculateDistance( );   
       	}
			catch(NumberFormatException nfe)
			{
				status = 1;
			}
  		}
     	return distanceBetweenPoints;
   }   	   
   //-----------------------------------------    
   public int getStatus( )
   {
   	return status;
   } 
   //-----------------------------------------                
   private void calculateDistance( )
   {			
		distanceBetweenPoints = Math.sqrt( ( Double.parseDouble( x1 ) - Double.parseDouble( x2 ) ) * 
                                         ( Double.parseDouble( x1 ) - Double.parseDouble( x2 ) ) + 
                                         ( Double.parseDouble( y1 ) - Double.parseDouble( y2 ) ) * 
                                         ( Double.parseDouble( y1 ) - Double.parseDouble( y2 ) ) );		
	}
   //-----------------------------------------
}
 
//=======================
//=======================
 
<%-- distanceCalculator2.jsp --%>
 
<jsp:useBean id="distance2" scope="page" class="calc.DistanceCalc2" />
<jsp:setProperty name="distance2" property="*" />
 
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt" %>
 
<html>
      <head><title>JSP Distance Calculator using EL Statements, JSTL, and a JavaBean</title> </head>
      <body>
	<br/>
      	<font face="Verdana"><center><i>
            	<h2>JSP Distance Calculator using EL Statements, JSTL, and a JavaBean</h2>
            	</i></center></font>
 
	<c:set var="x1" value="${distance2.x1}"/>
	<c:set var="y1" value="${distance2.y1}"/>
	<c:set var="x2" value="${distance2.x2}"/>
	<c:set var="y2" value="${distance2.y2}"/>
	<c:set var="distanceBetweenPoints" value="${distance2.distanceBetweenPoints}"/>
	<c:set var="status" value="${distance2.status}"/>
 
 
            	<form method="post" action="distanceCalculator2.jsp">
                  	<br>
                  	<font size="2" face="Verdana">
                  	Please enter the value of X1:
                  	<font color="blue">*</font>
                  	<input type="text" name="x1" length="7"/>            
              	    	<br>
                  	</font>
 
                  	<font size="2" face="Verdana">
                  	Please enter the value of Y1:
                  	<font color="blue">*</font>
                  	<input type="text" name="y1" length="7"/>            
                  	<br>
                  	</font>
 
                  	<font size="2" face="Verdana">
                  	Please enter the value of X2:
                  	<font color="blue">*</font>
                  	<input type="text" name="x2" length="7"/>            
                  	<br>
                  	</font>
 
                  	<font size="2" face="Verdana">
                  	Please enter the value of Y2.
                  	<font color="blue">*</font>
                  	<input type="text" name="y2" length="7"/>            
                  	</font>
 
                  	<p>
                  	<input type="submit" value="Calculate"/>
                  	</p>
            	</form>
 
	<c:if test="${pageContext.request.method=='POST'}">
            	<c:choose>
 
		<c:when test="${status == 1}">
			<hr/><br/>
                        		<font size="4" face="Verdana" color="red">
                        		Please input numbers only.
			</font>
                  	</c:when> 
 
                  	<c:when test='${x1 == null}'>
                        		<hr/><br/>
			<font size="4" face="Verdana" color="red">
                        		You did not enter a value for X1.
			</font>
                  	</c:when>
 
                  	<c:when test='${y1 == null}'>
                        		<hr/><br/>
			<font size="4" face="Verdana" color="red">
                        		You did not enter a value for Y1.
			</font>
                  	</c:when>
 
                  	<c:when test='${x2 == null}'>
                        		<hr/><br/>
			<font size="4" face="Verdana" color="red">
                        		You did not enter a value for X2.
			</font>
                  	</c:when>
 
                  	<c:when test='${y2 == null}'>
                        		<hr/><br/>
			<font size="4" face="Verdana" color="red">
                        		You did not enter a value for Y2.
			</font>
                  	</c:when>
 
		<c:otherwise>
                                   	<hr/>
                        		<font face="Verdana"> <u>
                        		<h3>Output</h3>
                        		</u></font>
 
                        		<font size="4" face="Verdana" color="blue">
                        		X1 = ${x1} <br/>
                        		Y1 = ${y1} <br/>
                        		X2 = ${x2} <br/>
                        		Y2 = ${y2} <br/>
                        		</font>
 
                        		<br/>
                        		<font size="4" face="Verdana" color="blue"> 
                        		The distance between (X1, Y1) and (X2, Y2) is 
                        		<fmt:formatNumber value="${distanceBetweenPoints}" 
                                    	type="number" maxFractionDigits="15"/> 
			</font>
 
                  	</c:otherwise>
            	</c:choose>
	</c:if>
	
	<%--
	<font size="4" face="Verdana" color="green">
	<br/><br/>
        	x1=${x1} 
	<br/>
	y1=${y1} 
	<br/>
	x2=${x2} 
	<br/>
	y2=${y2}
	<br/>
        	distanceBetweenPoints=${distanceBetweenPoints}
	<br/>
	</font>
	--%>
 
      </body>
</html>

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ASKER

Thanks again for the superior assistance!