While Loop

**r035198x** · Feb 19 '07, 07:25 PM

use this

Code:

 
<%
 
 
 
  String valString;
   try { 
 
   int recCount = 0;
	FileReader dFile = new FileReader("w:/www/DataFile.txt");
	   BufferedReader dataFile = new BufferedReader(dFile);
	valString = dataFile.readLine();
	while(valString != null){
	 recCount++;
	 out.println(valString);
	 valString = dataFile.readLine();
	}
   }
   catch (FileNotFoundException e) {
   System.err.println("FileStreamsTest: " + e);
  }
  catch(IOException iOE) {
   iOE.printStackTrace();
  }
  finally {
   dataFile.close();  
  }
   
 
%>

Do you want the values to be displayed in a table?

**Naha** · Feb 19 '07, 07:31 PM

yes I want it in a table, its still givin me 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.jasp er.JasperExcept ion: Unable to compile class for JSP

An error occurred at line: 24 in the jsp file: /website2/weather.jsp
Generated servlet error:
dataFile cannot be resolved

org.apache.jasp er.servlet.JspS ervletWrapper.h andleJspExcepti on(JspServletWr apper.java:510)
org.apache.jasp er.servlet.JspS ervletWrapper.s ervice(JspServl etWrapper.java: 375)
org.apache.jasp er.servlet.JspS ervlet.serviceJ spFile(JspServl et.java:314)
org.apache.jasp er.servlet.JspS ervlet.service( JspServlet.java :264)
javax.servlet.h ttp.HttpServlet .service(HttpSe rvlet.java:802)

root cause

org.apache.jasp er.JasperExcept ion: Unable to compile class for JSP

An error occurred at line: 24 in the jsp file: /website2/weather.jsp
Generated servlet error:
dataFile cannot be resolved

org.apache.jasp er.compiler.Def aultErrorHandle r.javacError(De faultErrorHandl er.java:84)
org.apache.jasp er.compiler.Err orDispatcher.ja vacError(ErrorD ispatcher.java: 328)
org.apache.jasp er.compiler.JDT Compiler.genera teClass(JDTComp iler.java:414)
org.apache.jasp er.compiler.Com piler.compile(C ompiler.java:29 7)
org.apache.jasp er.compiler.Com piler.compile(C ompiler.java:27 6)
org.apache.jasp er.compiler.Com piler.compile(C ompiler.java:26 4)
org.apache.jasp er.JspCompilati onContext.compi le(JspCompilati onContext.java: 563)
org.apache.jasp er.servlet.JspS ervletWrapper.s ervice(JspServl etWrapper.java: 303)
org.apache.jasp er.servlet.JspS ervlet.serviceJ spFile(JspServl et.java:314)
org.apache.jasp er.servlet.JspS ervlet.service( JspServlet.java :264)
javax.servlet.h ttp.HttpServlet .service(HttpSe rvlet.java:802)

note The full stack trace of the root cause is available in the Apache Tomcat/5.5.17 logs.

Code:

<%@ page import="java.util.*,java.io.*" %>
<%@ page import="testBean.TestBean" %>


<html>
<head>

<LINK REL="stylesheet" TYPE="text/css" HREF="stylesheet1.css">

</head>

<body>

<hr></hr>

<center>

<h1> 

 Weather Forecast</h1>
 
 <%
 
  String valString;
   try { 
 
   int recCount = 0;
	FileReader dFile = new FileReader("w:/www/DataFile.txt");
	   BufferedReader dataFile = new BufferedReader(dFile);
	valString = dataFile.readLine();
	while(valString != null){
	 recCount++;
	 out.println(valString);
	 valString = dataFile.readLine();
	}
   }
   catch (FileNotFoundException e) {
   System.err.println("FileStreamsTest: " + e);
  }
  catch(IOException iOE) {
   iOE.printStackTrace();
  }
  finally {
   dataFile.close();  
  }
   
 
%>
 
 <jsp:useBean id="temp"  class="TestBean" /> 
 
 <br><br><br>

<a href="test.html"> Local Five day forecast </a>

<br><br><br><br><br><br><br>
<table>
<tr><TD><IMG SRC="sunny.gif" ALT="S" BORDER=0 WIDTH=100 HEIGHT=100 ></TD><TD><h4> <%= temp.post() %> </h4></TD> </tr>
</table>

<br><br><br><br><br><br><br>

<hr></hr>

</body>
</html>

**r035198x** · Feb 19 '07, 07:35 PM

Originally posted by Naha

yes I want it in a table, its still givin me 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.jasp er.JasperExcept ion: Unable to compile class for JSP

An error occurred at line: 24 in the jsp file: /website2/weather.jsp
Generated servlet error:
dataFile cannot be resolved

org.apache.jasp er.servlet.JspS ervletWrapper.h andleJspExcepti on(JspServletWr apper.java:510)
org.apache.jasp er.servlet.JspS ervletWrapper.s ervice(JspServl etWrapper.java: 375)
org.apache.jasp er.servlet.JspS ervlet.serviceJ spFile(JspServl et.java:314)
org.apache.jasp er.servlet.JspS ervlet.service( JspServlet.java :264)
javax.servlet.h ttp.HttpServlet .service(HttpSe rvlet.java:802)

root cause

org.apache.jasp er.JasperExcept ion: Unable to compile class for JSP

An error occurred at line: 24 in the jsp file: /website2/weather.jsp
Generated servlet error:
dataFile cannot be resolved

org.apache.jasp er.compiler.Def aultErrorHandle r.javacError(De faultErrorHandl er.java:84)
org.apache.jasp er.compiler.Err orDispatcher.ja vacError(ErrorD ispatcher.java: 328)
org.apache.jasp er.compiler.JDT Compiler.genera teClass(JDTComp iler.java:414)
org.apache.jasp er.compiler.Com piler.compile(C ompiler.java:29 7)
org.apache.jasp er.compiler.Com piler.compile(C ompiler.java:27 6)
org.apache.jasp er.compiler.Com piler.compile(C ompiler.java:26 4)
org.apache.jasp er.JspCompilati onContext.compi le(JspCompilati onContext.java: 563)
org.apache.jasp er.servlet.JspS ervletWrapper.s ervice(JspServl etWrapper.java: 303)
org.apache.jasp er.servlet.JspS ervlet.serviceJ spFile(JspServl et.java:314)
org.apache.jasp er.servlet.JspS ervlet.service( JspServlet.java :264)
javax.servlet.h ttp.HttpServlet .service(HttpSe rvlet.java:802)

note The full stack trace of the root cause is available in the Apache Tomcat/5.5.17 logs.

Code:

 
<%@ page import="java.util.*,java.io.*" %>
<%@ page import="testBean.TestBean" %>
 
 
<html>
<head>
 
<LINK REL="stylesheet" TYPE="text/css" HREF="stylesheet1.css">
 
</head>
 
<body>
 
<hr></hr>
 
<center>
 
<h1> 
 
Weather Forecast</h1>
 
<%
 
String valString;
try { 
 
int recCount = 0;
	FileReader dFile = new FileReader("w:/www/DataFile.txt");
	 BufferedReader dataFile = new BufferedReader(dFile);
	valString = dataFile.readLine();
	while(valString != null){
	 recCount++;
	 out.println(valString);
	 valString = dataFile.readLine();
	}
}
catch (FileNotFoundException e) {
System.err.println("FileStreamsTest: " + e);
}
catch(IOException iOE) {
iOE.printStackTrace();
}
finally {
dataFile.close(); 
}
 
 
%>
 
<jsp:useBean id="temp" class="TestBean" /> 
 
<br><br><br>
 
<a href="test.html"> Local Five day forecast </a>
 
<br><br><br><br><br><br><br>
<table>
<tr><TD><IMG SRC="sunny.gif" ALT="S" BORDER=0 WIDTH=100 HEIGHT=100 ></TD><TD><h4> <%= temp.post() %> </h4></TD> </tr>
</table>
 
<br><br><br><br><br><br><br>
 
<hr></hr>
 
</body>
</html>

Just change to

Code:

 <% 
 
  String valString;
  BufferedReader dataFile = null;
   try {
   int recCount = 0;
	FileReader dFile = new FileReader("w:/www/DataFile.txt");
	   dataFile = new BufferedReader(dFile);
	valString = dataFile.readLine();
	while(valString != null){
	 recCount++;
	 out.println(valString);
	 valString = dataFile.readLine();
	}
   }
   catch (FileNotFoundException e) {
   System.err.println("FileStreamsTest: " + e);
  }
  catch(IOException iOE) {
   iOE.printStackTrace();
  }
  finally {
   dataFile.close();
  }

%>

What do you want the table to look like?

**Naha** · Feb 19 '07, 07:35 PM

phew!!!, it seems to be workin now, i put the datafile.close inside the try block. how would i display it in a table though, the code is rather large for a table.

Code:

<%@ page import="java.util.*,java.io.*" %>
<%@ page import="testBean.TestBean" %>


<html>
<head>

<LINK REL="stylesheet" TYPE="text/css" HREF="stylesheet1.css">

</head>

<body>

<hr></hr>

<center>

<h1> 

 Weather Forecast</h1>
 
 <%
 
  String valString;
   try { 
 
   int recCount = 0;
	FileReader dFile = new FileReader("w:/www/DataFile.txt");
	   BufferedReader dataFile = new BufferedReader(dFile);
	valString = dataFile.readLine();
	while(valString != null){
	 recCount++;
	 out.println(valString);
	 valString = dataFile.readLine();
	 dataFile.close();
	}
   }
   catch (FileNotFoundException e) {
   System.err.println("FileStreamsTest: " + e);
  }
  catch(IOException iOE) {
   iOE.printStackTrace();
  }
  finally {
   //dataFile.close();  
  }
   
 
%>
 
 <jsp:useBean id="temp"  class="TestBean" /> 
 
 <br><br><br>

<a href="test.html"> Local Five day forecast </a>

<br><br><br><br><br><br><br>
<table>
<tr><TD><IMG SRC="sunny.gif" ALT="S" BORDER=0 WIDTH=100 HEIGHT=100 ></TD><TD><h4> <%= temp.post() %> </h4></TD> </tr>
</table>

<br><br><br><br><br><br><br>

<hr></hr>

</body>
</html>

**r035198x** · Feb 19 '07, 07:40 PM

Originally posted by Naha

phew!!!, it seems to be workin now, i put the datafile.close inside the try block. how would i display it in a table though, the code is rather large for a table.

Code:

 
<%@ page import="java.util.*,java.io.*" %>
<%@ page import="testBean.TestBean" %>
 
 
<html>
<head>
 
<LINK REL="stylesheet" TYPE="text/css" HREF="stylesheet1.css">
 
</head>
 
<body>
 
<hr></hr>
 
<center>
 
<h1> 
 
Weather Forecast</h1>
 
<%
 
String valString;
try { 
 
int recCount = 0;
	FileReader dFile = new FileReader("w:/www/DataFile.txt");
	 BufferedReader dataFile = new BufferedReader(dFile);
	valString = dataFile.readLine();
	while(valString != null){
	 recCount++;
	 out.println(valString);
	 valString = dataFile.readLine();
	 dataFile.close();
	}
}
catch (FileNotFoundException e) {
System.err.println("FileStreamsTest: " + e);
}
catch(IOException iOE) {
iOE.printStackTrace();
}
finally {
//dataFile.close(); 
}
 
 
%>
 
<jsp:useBean id="temp" class="TestBean" /> 
 
<br><br><br>
 
<a href="test.html"> Local Five day forecast </a>
 
<br><br><br><br><br><br><br>
<table>
<tr><TD><IMG SRC="sunny.gif" ALT="S" BORDER=0 WIDTH=100 HEIGHT=100 ></TD><TD><h4> <%= temp.post() %> </h4></TD> </tr>
</table>
 
<br><br><br><br><br><br><br>
 
<hr></hr>
 
</body>
</html>

I suggest you put the close statement back in the finally so it always gets executed. To display the contents of the file in a table you just mix the html with the java code. You haven't said what you want to form the heading of the table and the rows and columns yet.

**Naha** · Feb 19 '07, 07:44 PM

Something like this: 3 rows and 2 columns.

Code:

              Todays’ Forecast
Temperature	(first line of data)
Light	                (second line of data)

Thank you so much for all your help, I am really greatefull.

**r035198x** · Feb 19 '07, 07:52 PM

Originally posted by Naha

Something like this: 3 rows and 2 columns.

Code:

Todays’ Forecast
Temperature	(first line of data)
Light	 (second line of data)

Thank you so much for all your help, I am really greatefull.

You'd have to have Temperature and light in an array

Something like

Code:

 <table>
 <tr>
  <th></th>
  <th></th> 
 </tr>
<%
 
  String valString;
  BufferedReader dataFile = null;
   try {
   String[] temp = {"Temperature", "Ligth"};
   int recCount = 0;
	FileReader dFile = new FileReader("w:/www/DataFile.txt");
	   dataFile = new BufferedReader(dFile);
	valString = dataFile.readLine();
	while(valString != null){
  %>
  <tr>
  <td><%=temp[recCount]%></td>
  <td><%=valString%></td>
 </tr>
<%
	 recCount++;
	 //out.println(valString);
	 valString = dataFile.readLine();
	}
   }
   catch (FileNotFoundException e) {
   System.err.println("FileStreamsTest: " + e);
  }
  catch(IOException iOE) {
   iOE.printStackTrace();
  }
  finally {
   dataFile.close();
  }

%>

</table>

Might have to modify it a bit. I have to go. Good luck with the rest of it

**Naha** · Feb 19 '07, 07:58 PM

ok, thanks for your help.

**r035198x** · Feb 20 '07, 05:28 AM

Originally posted by Naha

ok, thanks for your help.

Did you get it to work like you wanted?

While Loop

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