Importing classes for a jsp

Hi,
I'm trying to get a jsp working. This is part of the code of test.jsp:
<%@page import="First, Second" %>
<HTML>
<HEAD>
<TITLE>JSP Example 3</TITLE>
</HEAD>
<BODY BGCOLOR="#FFFFCC">
<CENTER>
<H2>Date and Time</H2>
First.hello() is: <% First.hello(); %>
Second.hi() is: <% Second.hi(); %>
</CENTER>
</BODY>
</HTML>This is the output of the compilation in Tomcat:
org.apache.jasper.JasperException: Unable to compile class for JSP:
An error occurred at line: 6 in the generated java file
The import First cannot be resolved
An error occurred at line: 7 in the generated java file
The import Second cannot be resolved
An error occurred at line: 9 in the jsp file: /date3.jsp
First cannot be resolved
6: <BODY BGCOLOR="#FFFFCC">
7: <CENTER>
8: <H2>Date and Time</H2>
9: First.hello() is: <% First.hello(); %>
10: Second.hi() is: <% Second.hi(); %>
11: </CENTER>
12: </BODY>First.class and Second.class are the two files who share the directory with test.jsp
I'm flabergasted with this error. As I am using very basic code for this example you would think it works (or is this error one of the NullPointerException kind?).
Abel
Edited by: Abel on Dec 12, 2007 6:21 AM
Changed to a more basic type of example

I found the answer myself ~:-).
Add the files you want to import to a jar file
* To be more precise, in the directory I have the jsp, I created first a directory WEB-INF, and in that directory created a directory lib, and finally created a directory test. I moved the two Java files to the test directory. I changed the Java files (added a package statement). So the configuration is now:
<%@page import="test.*" %>
<HTML>
<HEAD>
<TITLE>JSP Example 3</TITLE>
</HEAD>
<BODY BGCOLOR="#FFFFCC">
<CENTER>
<H2>Date and Time</H2>
<%
   First first = new First();
   out.println ("First says: " + first.hello());
%>
</CENTER>
</BODY>
</HTML>And the two java files:
package test;
public class First {
     public String hello() {
          return ("Hello from First");
package test;
public class Second {
     public String hi() {
          return ("Hi from Second");
}And finally I added the two classes I got after compilation to a jar file in the WEB-INF\lib directory:
jar -cvf test.jar test\First.class test\Second.classI just explain what I did wrong, as I saw many comparable posts without an answer. And this basic problem can keep you away from the real work.
Abel.

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Please can anyone help me to solve this.
Actually,this is the condition.
In my db,there is a table called UserPassword, which has 4
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<jsp:useBean id="UserPassword" class="data.UserPassword" scope="session"/>
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String nextPage ="MainForm.jsp";
if(UserPassword.verifyEmpno()){
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%>
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UserPassword.java- F:/Project/core/data/UserPassword.java
UserAccManager.java - F:/Project/core/UserAccManager.java
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UserPassword.class - webapps/mySystemName/WEB-INF/classes/core/data/
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package core;               //Is this right?
import data.UserPassword;     //Is this right?
import java.io.*;
import java.sql.*;
import java.util.*;
import javax.sql.*;
import javax.servlet.*;
import javax.servlet.http.*;
public final class UserAccManager{
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   private static PreparedStatement pstmt1;
   private static PreparedStatement pstmt2;
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   private UserAccManager(){
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      try {
      pstmt2.setString(1, username);
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          user=rs2.getString("UserName");
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         System.err.println(ex.getMessage());
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     public static boolean createAcc(int empno, String username, String password, int
level){
          boolean create_acc_ok = false;
          initConnection();
          try{
                  //create a new object,from the UserPassword table.
               UserPassword useraccount = new UserPassword();
               useraccount.setEmpno(empno);
               useraccount.setUsername(username);
               useraccount.setPassword(password);
               useraccount.setLevel(level);
               //assign value for ???
               pstmt3.setInt(1, useraccount.getEmpno());
               pstmt3.setString(2, useraccount.getUsername());
               pstmt3.setString(3, useraccount.getPassword());
               pstmt3.setInt(4, useraccount.getLevel());
               if(pstmt3.executeUpdate()==1) create_acc_ok=true;
               pstmt3.close();
                       //con.close();
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}here is the bean (part of it)
package data;               //is it right?
import java.io.*;
import java.sql.*;
import java.util.*;
import javax.sql.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class UserPassword
     private int empno;
     private String username;
     private String password;
     private int level;
     // Constructor
     public UserPassword()
          this.empno = empno;
          this.username = username;
          this.password = password;
          this.level = level;
     // setters and getters are here.
//     public boolean verifyEmpno() {
//               return UserAccManager.verifyEmpno(empno);
//      public boolean verifyUsername(String username) {
//           return UserAccManager.verifyUsername(username);
     // These 2 methods not compile with or without para's.So I leave that job for the
     //controll class UserAccManager.java.
Now my problem is this: When I submit data, there is an error;org.apache.jasper.JasperException: Unable to compile class for JSP
An error occurred at line: -1 in the jsp file: null
Generated servlet error:
[javac] Compiling 1 source file
C:\Program Files\Apache Group\Tomcat 4.1\work\Standalone\localhost\HRM\CreateAcc_jsp.java:8:
cannot access core.data.UserPassword
bad class file: C:\Program Files\Apache Group\Tomcat
4.1\webapps\HRM\WEB-INF\classes\core\data\UserPassword.class
class file contains wrong class: data.UserPassword
Please remove or make sure it appears in the correct subdirectory of the classpath.
import core.data.UserPassword;
^
1 error
Are there any mistakes? If so tell me where is it and how to change them.Please help.

I try it that way, but it don't compile.
Error:core\data\UserPassword.java:package javax.servlet does not exist
import javax.servlet.*;
core\data\UserPassword.java:package javax.servlet.http does not exist
import javax.servlet.http.*;
So,I comment them only in the UserPassword.java file,and compile it again.
Then it compile well.I goto the directory to get the .class files.
But there is only UserPassword.class inside the data folder. There is not
UserAccManager.class in the core folder.
Then I try this way,I put my 2 java files in to a new folder,
F:\SystemName\com
When I try it that way, but it don't compile.
javac -classpath . -d . com\*.javaError:com\UserPassword.java:package javax.servlet does not exist
import javax.servlet.*;
com\UserPassword.java:package javax.servlet.http does not exist
import javax.servlet.http.*;
So,I comment them only in the UserPassword.java file,and compile it again.
Now both are compiling well.There was 2 class files.
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Start the server.But it gave errors:
C:\Program Files\Apache Group\Tomcat
4.1\work\Standalone\localhost\HRM\CreateAcc_jsp.java:68: cannot resolve symbol
symbol : variable empno
location: class org.apache.jsp.CreateAcc_jsp
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                            ^
C:\Program Files\Apache Group\Tomcat
4.1\work\Standalone\localhost\HRM\CreateAcc_jsp.java:69: cannot resolve symbol
symbol : variable username
location: class org.apache.jsp.CreateAcc_jsp
     if(UserAccManager.verifyUsername(username)){
                                         ^
C:\Program Files\Apache Group\Tomcat
4.1\work\Standalone\localhost\HRM\CreateAcc_jsp.java:69: non-static method
verifyUsername(java.lang.String) cannot be referenced from a static context
     if(UserAccManager.verifyUsername(username)){
                         ^
C:\Program Files\Apache Group\Tomcat
4.1\work\Standalone\localhost\HRM\CreateAcc_jsp.java:70: cannot resolve symbol
symbol : variable empno
location: class org.apache.jsp.CreateAcc_jsp
          if(UserAccManager.createAcc(empno, username,password,level)) nextPage
="MsgAcc.jsp";
                                            ^
C:\Program Files\Apache Group\Tomcat
4.1\work\Standalone\localhost\HRM\CreateAcc_jsp.java:70: cannot resolve symbol
symbol : variable username
location: class org.apache.jsp.CreateAcc_jsp
          if(UserAccManager.createAcc(empno, username,password,level)) nextPage
="MsgAcc.jsp";
                                                   ^
C:\Program Files\Apache Group\Tomcat
4.1\work\Standalone\localhost\HRM\CreateAcc_jsp.java:70: cannot resolve symbol
symbol : variable password
location: class org.apache.jsp.CreateAcc_jsp
          if(UserAccManager.createAcc(empno, username,password,level)) nextPage
="MsgAcc.jsp";
                                                            ^
C:\Program Files\Apache Group\Tomcat
4.1\work\Standalone\localhost\HRM\CreateAcc_jsp.java:70: cannot resolve symbol
symbol : variable level
location: class org.apache.jsp.CreateAcc_jsp
          if(UserAccManager.createAcc(empno, username,password,level)) nextPage
="MsgAcc.jsp";
                                                                     ^
C:\Program Files\Apache Group\Tomcat
4.1\work\Standalone\localhost\HRM\CreateAcc_jsp.java:70: non-static method
createAcc(int,java.lang.String,java.lang.String,int) cannot be referenced from a static
context
          if(UserAccManager.createAcc(empno, username,password,level)) nextPage
="MsgAcc.jsp";
                                 ^
8 errorsTo solve the problem non-static method,I goto the UserAccManager.java file and do these
things.
package com;
import java.io.*;
import java.sql.*;
import java.util.*;
import javax.sql.*;
//import javax.servlet.*;               //otherwise it tells an error.(package
                              //javax.servlet does not exist)
//import javax.servlet.http.*;
public class UserAccManager {
   private static final String DRIVER = "com.mysql.jdbc.Driver";
   private static final String URL = "jdbc:mysql://localhost:3306/superfine";
   private static Connection connection;
   private static PreparedStatement pstmt1;
    private static PreparedStatement pstmt2;
      private static PreparedStatement pstmt3;
   private UserAccManager() {
   // Initializes the connection and statements
   private static void initConnection() {
         //same
   // Closes the connection and statements
   // Method to be called by main class when finished with DB
   public static void closeConnection() {
     //same
   public static boolean verifyEmpno(int empno) {
      // same.
   public static boolean verifyUsername(String username) {
     //same.
     public static boolean createAcc(int empno, String username, String password, int
level){
          //same
package com;
import java.io.*;
import java.sql.*;
import java.util.*;
import javax.sql.*;
//import javax.servlet.*;
//import javax.servlet.http.*;
public class UserPassword {
     // same
Again compile those files and put .class filses into the WEB-INF/classes/com directory.
When i submits the data via the form it generates an error:
org.apache.jasper.JasperException: Unable to compile class for JSP
An error occurred at line: 9 in the jsp file: /CreateAcc.jsp
Generated servlet error:
    [javac] Compiling 1 source file
C:\Program Files\Apache Group\Tomcat
4.1\work\Standalone\localhost\HRM\CreateAcc_jsp.java:68: cannot resolve symbol
symbol : variable empno
location: class org.apache.jsp.CreateAcc_jsp
if(UserAccManager.verifyEmpno(empno)){
                              ^
An error occurred at line: 9 in the jsp file: /CreateAcc.jsp
Generated servlet error:
C:\Program Files\Apache Group\Tomcat
4.1\work\Standalone\localhost\HRM\CreateAcc_jsp.java:69: cannot resolve symbol
symbol : variable username
location: class org.apache.jsp.CreateAcc_jsp
     if(UserAccManager.verifyUsername(username)){
                                         ^
An error occurred at line: 9 in the jsp file: /CreateAcc.jsp
Generated servlet error:
C:\Program Files\Apache Group\Tomcat
4.1\work\Standalone\localhost\HRM\CreateAcc_jsp.java:70: cannot resolve symbol
symbol : variable empno
location: class org.apache.jsp.CreateAcc_jsp
          if(UserAccManager.createAcc(empno, username,password,level)) nextPage
="MsgAcc.jsp";
                                            ^
An error occurred at line: 9 in the jsp file: /CreateAcc.jsp
Generated servlet error:
C:\Program Files\Apache Group\Tomcat
4.1\work\Standalone\localhost\HRM\CreateAcc_jsp.java:70: cannot resolve symbol
symbol : variable username
location: class org.apache.jsp.CreateAcc_jsp
          if(UserAccManager.createAcc(empno, username,password,level)) nextPage
="MsgAcc.jsp";
                                                   ^
An error occurred at line: 9 in the jsp file: /CreateAcc.jsp
Generated servlet error:
C:\Program Files\Apache Group\Tomcat
4.1\work\Standalone\localhost\HRM\CreateAcc_jsp.java:70: cannot resolve symbol
symbol : variable password
location: class org.apache.jsp.CreateAcc_jsp
          if(UserAccManager.createAcc(empno, username,password,level)) nextPage
="MsgAcc.jsp";
                                                            ^
An error occurred at line: 9 in the jsp file: /CreateAcc.jsp
Generated servlet error:
C:\Program Files\Apache Group\Tomcat
4.1\work\Standalone\localhost\HRM\CreateAcc_jsp.java:70: cannot resolve symbol
symbol : variable level
location: class org.apache.jsp.CreateAcc_jsp
          if(UserAccManager.createAcc(empno, username,password,level)) nextPage
="MsgAcc.jsp";
                                                                     ^
6 errorshere is the CreateAcc.jsp file
<%@ page language="java" %>
<%@ page import="com.UserAccManager" %>
<%@ page import="com.UserPassword" %>
<jsp:useBean id="userPassword" class="com.UserPassword" scope="request"/>
<jsp:setProperty name="userPassword" property="*" />
<%
String nextPage ="MainForm.jsp";
if(UserAccManager.verifyEmpno(empno)){
     if(UserAccManager.verifyUsername(username)){
          if(UserAccManager.createAcc(empno, username,password,level)) nextPage
="MsgAcc.jsp";
      }else{
           nextPage="UserNameExist.jsp";
      else{
          nextPage="UserAccError.jsp";
%>
<jsp:forward page="<%=nextPage%>"/>Please, anyone know how to send these parameters to the java file.
Thanks.

Importing class to JSP in websphere (newbie)

Hi I am trying to figure out how to properly import a class in a JSP.
The DocumentRoot directory is set in Websphere and that is where my JSP's reside. I have created a folder off of the DocumentRoot directory called classes and placed my .class file in there. I then set the classes directory in the classpath (and restarted the appserver)
I have an import statement in my jsp for the class.
I am now getting an error that says it is unable to compile because of null. Any ideas????
Below is a test piece of JSP code and the class code:
<%@ page import="java.io.*, java.util.*, java.text.*, IPRStat, java.net.*,java.sql.*"%>
<HTML>
<BODY>
<%
try {
String IPRNum = "001-0001";
String IPRStatus = "OK";
IPRStat Testing = new IPRStat(IPRNum, IPRStatus);
} catch (Exception e) {
out.println("Error detected " + e.getMessage());
%>
</BODY>
</HTML>
class IPRStat
public IPRStat(String i, String d )
iprnum = i;
status = d;
public String getIPRNum()
return iprnum;
public String getStatus()
return status;
private String iprnum;
private String status;
-----------------------------------------------------

DocumentRoot (looks something like: /aibm/Userdata/WebAsAdv/default/mydev) is where my JSP's live (i.e.)
/aibm/Userdata/WebAsAdv/default/mydev/testidea.jsp
and I made a directory off of DocumentRoot called classes:
/aibm/Userdata/WebAsAdv/default/mydev/classes
And copied IPRStat.class into the classes directory.
/aibm/Userdata/WebAsAdv/default/mydev/classes/IPRStat.class
I then put the path (/aibm/Userdata/WebAsAdv/default/mydev/classes) in the classpath and restarted the appserver.
At this point there is no Web-INF that I can see. I am new to Websphere myself. Is version 3.5.4 standard edition. I am using the websphere admin console to set the classpath.

Importing Custom Classes into a JSP page

Hello,
I have created custom package com.srjgroup.report. It sits in C:\workspace\src\com\srjgroup\report directory. I have java files as well as compiled classes there. No jar files there.
did amend classpath to point to this directory.
In my JSP page I have the import statement as following
import="java.sql.*, java.util.*, java.text.SimpleDateFormat, com.srjgroup.report.*"It imports all the packages without any errors. However, when I try to use one of the classes in the package, I get error
org.apache.jasper.JasperException: Unable to compile class for JSP
An error occurred at line: 3 in the jsp file: /SQLServer.jsp
Generated servlet error:
SRJReports cannot be resolved to a type
SRJReports is one of the classes that I am trying to use in that package. When I comment out all references to the class, everything is fine.
So, to fix this I moved the entire package to
C:\Program Files\Apache Software Foundation\Tomcat 5.5\webapps\ROOT\WEB-INF\lib direcory, preserving the hierarhy. So, now my custom package is located here:
C:\Program Files\Apache Software Foundation\Tomcat 5.5\webapps\ROOT\WEB-INF\lib\com\srjgroup\report again there are no jar files, only java and classes here. Still, no go.
What am I doing wrong ?

Put the class in
C:\Program Files\Apache Software Foundation\Tomcat 5.5\webapps\ROOT\WEB-INF\classes\com\srjgroup\report
One more thing, there is no subdirectory in lib directory. You may look at the example within tomcat for reference. I start from there.

Can't import class into JSP

Hi,
I am trying to import a class into my JSP and am getting the following error at runtime:
org.apache.jasper.JasperException: Unable to compile class for JSP
An error occurred at line: -1 in the jsp file: null
Generated servlet error:
[javac] Compiling 1 source file
[javac] D:\jwsdp-1.2\work\Catalina\localhost\pe\org\apache\jsp\guestbook_jsp.java:7: '.' expected
[javac] import MessageGetter;
My import statement in the JSP is simply:
<%@ page import="MessageGetter" %>
and I am placing the class in the WEB-INF/classes directory. This is stumping me - if you've come across this or a similar problem, please let me know. Thanks.
P

Try posting your question in the JSP forum (http://forum.java.sun.com/forum.jsp?forum=45)
cheers,
Mike

Importing classes for a jsp

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