Import user defined class in JSP page

In my test.jsp page, I tried to display the user name using the value returned from a class UserInfo's static function getUsername(), like this:
<%@page import="toystore.view.UserInfo" %>
<html:text property="username" value="<%= UserInfo.getUsername()%>"
Is this allowed? I tried to run it but failed, it complained:
OracleJSP: oracle.jsp.provider.JspCompileException:
Errors compiling:D:\java\bc4jtoystore\ToyStoreController\classes\.jsps\_web_2d_inf\_jsp\_signin.java
Line # Error
0 cannot access class toystore.view.UserInfo; file toystore\view\UserInfo.class not found
64 variable UserInfo not found in class web2d_inf._jsp._signin
If it is allowed, what is the correct way to do it?
Thanks.
P.S. UserInfo is compiled in toystore.view package.

check your classpath. it looke like the compilers complaining that it can't locate your toy store package location not that there is a problem with your jsp. Hope this helps

Similar Messages

How to import user defined class in UIX page?

Does anyone know how to import user defined class in UIX page so that the class can be called in the javascript in the UIX ?
Thks & Rgds,
Benny

what you are referring to is not javascript.
it is JSP scriptlets. These are very different.
In order to keep a strict separation between View and Controller, it is not possible to run arbitrary java code from within your UIX code.
However, you can run java code from within a UIX event handler; see:
http://otn.oracle.com/jdeveloper/help/topic?inOHW=true&linkHelp=false&file=jar%3Afile%3A/u01/app/oracle/product/IAS904/j2ee/OC4J_ohw/applications/jdeveloper904/jdeveloper/helpsets/jdeveloper/uixhelp.jar!/uixdevguide/introducingbaja.html
event handler code is run before the page is rendered.

Calling java class from jsp page

Dear Friends.
I wrote jsp page and java class.
Am calling java class from jsp page. after processing result,
I have to refresh jsp page from java class.
processing time may take 5 minutes or 1 minute etc. that depends on user.
Can It be possible ? if possible , How ?

Ok, I get a very strange error now:
org.apache.jasper.JasperException: Unable to compile class for JSPerror: An error has occurred in the compiler; please file a bug report (http://java.sun.com/cgi-bin/bugreport.cgi).
What is this??? Anyone?

How to import User-Defined Libraries to ODI?

Hi All,
I am trying to execute Java programs using ODI. There are many User-Defined classes imported in the programs.
I have these User-Defined classes in JAR form.
My ODI is setup on a linux system.
So, where should these JAR files be uploaded in the system so that it can be imported in the Java programs?
Please help me in resolving this issue.
Thanks

Hi Sutirtha,
My ODI is installed on a linux system and I am using it on my desktop through a remote desktop connection.
I connect to it using Tarantella account. Here I have to create a session and a view to use the ODI.
So, when I am looking in the linux system for the <ODI_HOME>/oracledi/drivers folder, I am finding a lot of them.
So, Please help me in locating the exact one where I need to put the JAR files.
Thanks

Cannot comile user defined classes

Hello i have a problem on compiling user defined classes .
example
file x.java
public class x{
file y.java
import x;
public class y{
I first compile x.java and everything is OK .
Then i compile y.java and the compiler gives the folowing
y.java:2: '.' expected
import y
I have tried to put the classes on a package and added the folowing line yo each file
import /home/bill/test
Then i puted the java files on that dir
and compiled with
javac -classpath /home/bill/test y.java
AGAIN THE SAME
y.java:2: '.' expected
import y
WHAT I DO WRONG PLEASE HELP!!!!!!!!!!!!

1. Since J2SDK 1.4, you can not import classes that are in the default (or unnamed) package. You are getting the error because the compiler expects something after y like y.*;
2. You do not need to import classes that are in the same package, and all classes in the default package are in the same package.
In your case, your classes are in the default package so remove the import statement.

Pass an array of a user defined class to a stored procedure in java

Hi All,
I am trying to pass an array of a user defined class as an input parameter to a stored procedure. So far i have done the following:
Step 1: created an object type.
CREATE TYPE department_type AS OBJECT (
DNO NUMBER (10),
NAME VARCHAR2 (50),
LOCATION VARCHAR2 (50)
Step 2: created a varray of the above type.
CREATE TYPE dept_array1 AS TABLE OF department_type;
Step 3:Created a package to insert the records.
CREATE OR REPLACE PACKAGE objecttype
AS
PROCEDURE insert_object (d dept_array);
END objecttype;
CREATE OR REPLACE PACKAGE BODY objecttype
AS
PROCEDURE insert_object (d dept_array)
AS
BEGIN
FOR i IN d.FIRST .. d.LAST
LOOP
INSERT INTO department
VALUES (d (i).dno,d (i).name,d (i).location);
END LOOP;
END insert_object;
END objecttype;
Step 4:Created a java class to map the columns of the object type.
public class Department
private double DNO;
private String Name;
private String Loation;
public void setDNO(double DNO)
this.DNO = DNO;
public double getDNO()
return DNO;
public void setName(String Name)
this.Name = Name;
public String getName()
return Name;
public void setLoation(String Loation)
this.Loation = Loation;
public String getLoation()
return Loation;
Step 5: created a method to call the stored procedure.
public static void main(String arg[]){
try{
Department d1 = new Department();
d1.setDNO(1); d1.setName("Accounts"); d1.setLoation("LHR");
Department d2 = new Department();
d2.setDNO(2); d2.setName("HR"); d2.setLoation("ISB");
Department[] deptArray = {d1,d2};
OracleCallableStatement callStatement = null;
DBConnection dbConnection= DBConnection.getInstance();
Connection cn = dbConnection.getDBConnection(false); //using a framework to get connections
ArrayDescriptor arrayDept = ArrayDescriptor.createDescriptor("DEPT_ARRAY", cn);
ARRAY deptArrayObject = new ARRAY(arrayDept, cn, deptArray); //I get an SQLException here
callStatement = (OracleCallableStatement)cn.prepareCall("{call objecttype.insert_object(?)}");
((OracleCallableStatement)callStatement).setArray(1, deptArrayObject);
callStatement.executeUpdate();
cn.commit();
catch(Exception e){
System.out.println(e.toString());
I get the following exception:
java.sql.SQLException: Fail to convert to internal representation
My question is can I pass an array to a stored procedure like this and if so please help me reslove the exception.
Thank you in advance.

OK I am back again and seems like talking to myself. Anyways i had a talk with one of the java developers in my team and he said that making an array of structs is not much use to them as they already have a java bean/VO class defined and they want to send an array of its objects to the database not structs so I made the following changes to their java class. (Again hoping some one will find this useful).
Setp1: I implemented the SQLData interface on the department VO class.
import java.sql.SQLData;
import java.sql.SQLOutput;
import java.sql.SQLInput;
import java.sql.SQLException;
public class Department implements SQLData
private double DNO;
private String Name;
private String Location;
public void setDNO(double DNO)
this.DNO = DNO;
public double getDNO()
return DNO;
public void setName(String Name)
this.Name = Name;
public String getName()
return Name;
public void setLocation(String Location)
this.Location = Location;
public String getLoation()
return Location;
public void readSQL(SQLInput stream, String typeName)throws SQLException
public void writeSQL(SQLOutput stream)throws SQLException
stream.writeDouble(this.DNO);
stream.writeString(this.Name);
stream.writeString(this.Location);
public String getSQLTypeName() throws SQLException
return "DOCCOMPLY.DEPARTMENT_TYPE";
Step 2: I made the following changes to the main method.
public static void main(String arg[]){
try{
Department d1 = new Department();
d1.setDNO(1);
d1.setName("CPM");
d1.setLocation("LHR");
Department d2 = new Department();
d2.setDNO(2);
d2.setName("Admin");
d2.setLocation("ISB");
Department[] deptArray = {d1,d2};
OracleCallableStatement callStatement = null;
DBConnection dbConnection= DBConnection.getInstance();
Connection cn = dbConnection.getDBConnection(false);
ArrayDescriptor arrayDept = ArrayDescriptor.createDescriptor("DEPT_ARRAY", cn);
ARRAY deptArrayObject = new ARRAY(arrayDept, cn, deptArray);
callStatement = (OracleCallableStatement)cn.prepareCall("{call objecttype.insert_array_object(?)}");
((OracleCallableStatement)callStatement).setArray(1, deptArrayObject);
callStatement.executeUpdate();
cn.commit();
catch(Exception e){
System.out.println(e.toString());
and it started working no more SQLException. (The changes to the department class were done manfully but they tell me JPublisher would have been better).
Regards,
Shiraz

User defined classes

Hi,
I need to create a project which requires the application to have user defined classes. I am thinking of creating a Timer class which is imported into the main application and shown on the screen. Is this what a user defined class is, by importing another made class into the main class of the application?
Thanks for your help.

There are two basic types of classes in Java, ones written by someone else, and ones written by you.
The ones you write may use the ones other people write (like the classes that come with the SDK) or may use the other ones you write, or even better, both.
In Java there is no concept of a "main application". But there is a static method in a class your write that you call "main" and is special because it's the method that gets called by the java runtime when you tell it to load your class. i.e., it's the starting point of your application. In fact, you can have many classes in your collection of classes that make up an application with a main method and you can have java start with any one of these classes.
Hope this helps.

User defined class objects for a ADF component (button,inputfield)

How do I define a user defined class object for ADF objects?
My requirement is that when I do a modification to the class object, it should get reflectected to all the instances on my page.
E.g:- I'm having class object clsInputField, and all my input fields in my pages are based on this object. So when I change clsInputField it should get reflected to all my controls based on this class object.
Please help!!!

Hi Timo,
In our client server environment, we have a custom control for managing the zip code (used a Custom InputText field which extends the actual TextField) . All zip code specific validations are written in this custom class. In our application many of the pages uses this Custom component. So if any of the zipcode specific behaviour changes, we could implement this by only changing the Custom InputText field class.
We need to implement this behaviour in our ADF applications. Please advise.
Thanks,
Vishnu

Clone a user defined class..

Hello all,
just curious to know how can I copy/clone an instance of a class that I cant change/rebuild? I have gone thru the forums and I understand that to be able to clone a class-instance, the class itself should implement Cloneable or apply the deep-copy technique as mentioned in one of the JavaWorld pages but, as I said, what happens in a case where one has no access to the class code?
however, if these are the only ways to have a user defined class cloned then, it should be possible to avoid a clone/copy situation... I dont know how. Does anyone else know?
I have tried with few examples to understand what a shallow/deep copy is.
the curiosity is terribly grown once I heard from one of my colligues that this is very much (easily) possible in c++ and delphi!!!
please clarify. thanks in advance!

Object.clone() is native and create a copy by ignoring all access checks (native code have access to everything by default), therefore copying all fields in the new object. All you have to do is implements Cloneable. Overload the method if you want it to be public and then just call super.clone() or if you don't want to copy everything you have to deal with it manually, copy all the fields you need. If you don't have access to all members you have to use reflection and suppress the access checks.

How to load java class from jsp page?

hi all!
Does anyone know how to load java class from jsp page?
I try to load java class from jsp page.
Is it possible to load java class fom jsp page?
thanks and have a good day!

What I mean is How to load/open java class file from jsp page?
I think we can open Applet from jsp page by using
<applet code=helloApplet.class width=100 height=100>
</applet>
but, how to open java class which is an application made by Frame?
thanks and have a good day

How to put a user defined class in Web dynpro

How and where can we create some user defined classes?
For example i wanted to create some utility classs for my project. Under what folder should i create this?

Please create the .java files under src folder of the project
Go to PackageExplorer->expand the project->select src/packages and create the package under this and create java file.
Regards, Anilkumar

User defined class for Web Services

I am trying to use the Web Service Publishing Wizard to publish
a class as a web service. The wizard will not allow me to select
the method I wish to publish. When I click on the "Why Not?"
button the message says:
"One or more parameters did not have an XML Schema mapping
and/or serializer specified"
I use user defined classes as parameters of the methods of the service web.
How cam i install this web service on "Oracle J2EE Web services"?

If you use Java Beans (or single dimension arrays of Java Beans) that implement the java.io.serializable interface as per this article:
http://otn.oracle.com/tech/webservices/htdocs/samples/customtype/content.html
then Oracle9iAS will handle the publishing process of custom data types. The publishing wizard in Oracle9i JDeveloper 9.0.2 doesn't support this yet, but the link in the article to the JDeveloper help gives a fairly straightforward workaround. This workaround will be eliminated in Oracle9i JDeveloper 9.0.3 (due late August).
Does representing your parameters as Java Beans work for your problem?
Mike.

Class Data Sharing for User Defined Classes

i am using jdk 5.0 . JDK 5.0 supports class data sharing for system level classes. Is there any way a class data sharing be done for a user defined class?

Samantha10 wrote:
Is this class data sharing possible for user defined classes also? i have a singleton class which i am invoking through a script. The script has been scheduled to run every 1 sec . Since it is being invoked every 1 sec hence the singleton pattern is failing . Hence if the this class data sharing is possible then the singleton pattern can be made applicable.If you have a single process and you have a single class loaded by two different ClassLoader instances
in some respects they will be two different classes
if (class1 instanceof class2.getClass())returns false.
This is not the case for Java core classes because they are always loaded by the SystemClassLoader.
You write you
have a singleton class which i am invoking through a script. What approach to you use to invoke the singleton?
I am trying to figure out if you launch a new JVM every second...
Maybe you can use Nailgun.

Identifying APIs & user-defined classes

I have a class name in a string variable. Is it possible to identify whether that class is a Java API or user-defined class ? Please note that the identification has to be done thru code not manually.

There is no clear distinction between Java API and user defined classes. What I mean is there is no rule to limit user to use java.util as their package name and create their own classes like java.util.CustomCollection. Although that is not recommended at all, but nothing prevents it. There is sun.* package which implements most of the java.* classes, do you consider those Java API? And there are third party classes such as org.omg.* etc. All these classes including user defined classes are treated equally with the JVM.
So there is no clear distinction. The only thing you can do is to define a list of class names you consider Java API.
Why do you want to seperate them if I may ask? Since the JVM doesn't care.
--lichu

IMPORT USER DEFINED FIELD USING DTW

Hi
I want to IMPORT USER DEFINED FIELD OF SALE ORDER THAT ARE PRESENT IN ROW LEVEL AND DOCUMENT LEVEL
USING DTW.
SO PLZ GIVE ME SOLUTION FOR THAT.
THANK YOU

Hi,
What is your B1 version and PL? Please do not use all CAPS. It is not polite.
Thanks,
Gordon

Import user defined class in JSP page

Similar Messages

Maybe you are looking for