Debugging java.* packages

If I step into a method of a class that is in any of the java.* packages I can not querry the methods parameters. For example step into System.out.println and try to querry "x" (x is the parameter on the println signiture). I can usually querry the "this" object but the further I step in the java.* packages the less luck I have querrying attributes, parameters, etc. I see this result using jdk1.3 and jdk1.4 using IntelliJ's and Eclipse's debuggers running on W2K and ME. The jdk download is compiled for debugging isn't it?

Hello
Please take a look at this Architecture Overview:
http://java.sun.com/j2se/1.5.0/docs/guide/jpda/architecture.html
JVMTI is closely coupled to the implementation of the JVM. The implementation of JVMTI typically comes from the JVM vendor.
JDWP is the Java Debug Wire Protocol, which is a way for a remote debug agent to communicate with a JVM.
To see a list of products using JPDA, check this page:
http://java.sun.com/products/jpda/using.html
Some of these are open source, and some are not.
Hope this helps. Please add a follow-up if you need more information.

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Import Java package in JSP

I hope this is an appropriate forum for this query.
I want to be able to access a user-created Java package in JSP.
I have this code:
<%@page import="TPClass.*" %>
<%
xxx = TPClass
session.setAttribute("response",xxx.GetTPResponse());
%>
The error display points to TPClass in the import statement with the message "TPClass not found".
TPClass files are in the same location as the other project files.
I have creatyed and compiled the TPClass package.
Is there more I need to do?
Brenton

I think you are very new to java....
anyway
<%@page import="class name with full qualified package name"%>
like
<%@page import="com.x1.x2.TPClass"%>
<%
TPClass cls =new TPClass();
//then do whatever you want...
%>
hope u understand now.....

JAVA PACKAGES and JSP

i Have two problems one is i am designing a website which consists of a form. I am trying to write the Connectiviy and all other insert statements in seperate java packages and include them in JSP files.
i Have two java packages one is DBUtil(having two java files both dealing with connectovity) and another one is StudentUtIl which has java files that open the connections with database connection and insert data into DB., I am having a big Problem here. How can i call the function in the other java package in the files in this java package. i have openDB()and Close() in the other Db and i want to call these functions in JAVA classes in the other package. How to include a package. Both these packages are in the same File system mounted on a Local directory

Thank you for the reply. I am giving the code i have given the full class name . and now it is giving the following error :
Cannot reference a non-static method connectDB() in a static context.
I am also giving the code. Please do help me on this. i am a beginner in java.
import java.sql.*;
import java.util.*;
import DButil.*;
public class StudentManager {
/** Creates a new instance of StudentManager */
public StudentManager() {
Connection conn = null;
Statement cs = null;
public Vector getStudent(){
try{
dbutil.connectDB();
String Query = "Select St_Record, St_L_Name, St_F_Name, St_Major, St_Email_Address, St_SSN, Date, St_Company, St_Designation";
cs = conn.createStatement();
java.sql.ResultSet rs = cs.executeQuery(Query);
Vector Studentvector = new Vector();
while(rs.next()){
Studentinfo Student = new Studentinfo();
Student.setSt_Record(rs.getInt("St_Record"));
Student.setSt_L_Name(rs.getString("St_L_Name"));
Student.setSt_F_Name(rs.getString("St_F_Name"));
Student.setSt_Major(rs.getString("St_Major"));
Student.setSt_Email_Address(rs.getString("St_Email_Address"));
Student.setSt_Company(rs.getString("St_Company"));
Student.setSt_Designation(rs.getString("St_Designation"));
Student.setDate(rs.getInt("Date"));
Studentvector.add(Student);
if( cs != null)
cs.close();
if( conn != null && !conn.isClosed())
conn.close();
return Studentvector;
}catch(Exception ignore){
return null;
}finally {
dbutil.closeDB();
import java.sql.*;
import java.util.*;
public class dbutil {
/** Creates a new instance of dbutil */
public dbutil() {
Connection conn;
public void connectDB(){
conn = ConnectionManager.getConnection();
public void closeDB(){
try{
if(conn != null && !conn.isClosed())
conn.close();
}catch(Exception excep){
The main error is occuring at the following lines connectDB() and closeDB() in the class student manager. The class dbutil is in an another package.with an another file called connectionManager which establishes the connection with DB. The dbutil has the openconnection and close connection methods. I have not yet written the insert statements in StudentManager. PLease do Help me

Cannot Debug SSIS packages in 64 bit mode.

Hi,
To anyone who may be able to help. We are using SQL server 2014 Enterprise addition. Visual studio 2013, SSDT latest version installed, all 64 bit tools installed. I have tried to run my packages with the "Run64bitRuntime"
set to true ( project properties-->Debugging-->Run64BitRuntime = True). Initially I thought it an issues with my package (we migrated them from SSIS 2008R2, they run fine with no issues within the 32 bit memory constraints) so I created
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have tested this directly on the server, and on the client machine that I use and the issue is the same. If no one can help me here I guess I can log a support ticket.
thanks in advance.

Hi des_77,
According to your description, you can only debug your SSIS package in 32 bit mode.
Based on my research, I think the issue is caused by 64bit SSIS runtime is not installed on your machine. We can verify the issue by seeing if DtsDebugHost.exe under <Installation Drive>\Program Files\Microsoft SQL Server\120\DTS\Binn or not.
To fix this issue, please install SQL Server and select Integration Services for installation, Setup installs all available 64-bit Integration Services features and tools. Then we can set the Debug Options property Run64BitRuntime to “True”, view the processes
in Windows Task Manager to verify the version of DTDebugHost.exe when debugging the package.
Besides, if the issue still existed, it is my pleasure to help you to reflect your recommendation to the proper department for their consideration. Please feel free to submit your situation on our product to the following link
https://connect.microsoft.com/SQLServer/. Your feedback is valuable for us to improve our products and increase the level of service provided.
References:
http://blogs.msdn.com/b/dataaccesstechnologies/archive/2014/05/22/ssis-packages-executed-from-visual-studio-business-intelligence-development-studio-bids-design-time-on-a-64bit-development-server-goes-to-unresponsive-state-during-package-execution.aspx
http://dougbert.com/blog/post/64-bit-considerations-for-sql-server-integration-services-final.aspx
Thanks,
Katherine Xiong
Katherine Xiong
TechNet Community Support

NoClassDefFound error when using custom Java package in scripting QPAC

Hi,
I compiled a little Java-package (.jar), which contains a class that uses
com.adobe.workflow.datatype.form.FormDataTypeInstanceImpl.
I put my library in the lib folder of JBoss (...\server\all\lib).
Then I'm was trying to invoke my custom class in the scripting QPAC. But I'm constantly getting the error message
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I'm going mad about this.
Is there a way to address a custom package in the scripting QPAC, which uses
FormDataTypeInstanceImpl?
Steve

Removing the LiceCycle jars from the lib folder did not work. I still get the same error message.
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My utility class contains methods like this one:
@param
pFormData
@return
@throws
ParserConfigurationException
@throws
SAXException
@throws
IOException
public static
org.w3c.dom.Document formToXml
FormDataTypeInstanceImpl pFormData
throws
ParserConfigurationException, SAXException, IOException
byte
data = pFormData.getXFAData
InputStream objXMLInputStream =
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ByteArrayInputStream
data
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DocumentBuilderFactory objFactory = DocumentBuilderFactory.newInstance
DocumentBuilder objBuilder = objFactory.newDocumentBuilder
org.w3c.dom.Document objDocument = objBuilder.parse
objXMLInputStream
return
objDocument;
Even without ever invoking the aforementioned method, I get the error
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How to find classes in a java package

i am writing a java IDE. i want to extract all class names from a java package eg. java.lang (through coding). how can i do that.
Thanks in advance

File file = new File("path to your jar file");
JarFile jf = new JarFile(file);
Enumeration e = jf.entries();
ZipEntry ze = null;
while(e.hasMoreElements()){
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you have to understand java.util.jar java.util.zip packages for working with jar/zip files.
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Hi,
I'm learning J2ee and I'd like to use and debug
Java adventure. I tried to find some information but found nothing.
What I tried to debug , is to start the j2ee server by adding the following options into the bin/asadmin.bat file:
-Xdebug -Xrunjdwp:transport=dt_socket,address=8000,server=y,suspend=n
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My first question: 1- what visual debugger is great to debug J2ee apps ??
I'd like to known what are the steps to:
2- how to start the j2ee server in order to attach the jdb or a visual
debugger ?
3- when starting the j2ee server, what do i have to do in order to step
into the code source of Java adventure and follow function calls ?
4- how do I have to start the jdb to attach to the J2ee server ?
5- Any useful tip to debug J2ee apps ! :-)
Thanks in advance !
Waltereo

Hi,Hello
I'm learning J2ee and I'd like to use and debug
Java adventure. I tried to find some information but
found nothing.
What I tried to debug , is to start the j2ee server by
adding the following options into the bin/asadmin.bat
file:
-Xdebug
ug
-Xrunjdwp:transport=dt_socket,address=8000,server=y,sus
end=nThat looks OK.
This it doesn't work because the j2ee server is
started with the javaw.exe virtual machine. So I'm
stuck here.javaw.exe implies you are on a win32 machine. The default
debugging transport on win32 is shared memory... but you specify
a socket connection on the debugee command line above. This
means you need to specify sockets on the debugger side as well.
For example:
jdb -connect com.sun.jdi.SocketAttach:hostname=localhost,port=8000
Note the port number (8000) matches the value you specified
when starting the debugee.
>
My first question: 1- what visual debugger is great
to debug J2ee apps ??For a list of debugging tools, check this web page:
http://java.sun.com/products/jpda/using.html
Many of these products work well in a J2EE environment.
Most of them are either free, or come with an introductory
"try before you buy" offer.
I'd like to known what are the steps to:
2- how to start the j2ee server in order to attach
the jdb or a visual
debugger ?You are on the right track with the flags/options you
mentioned.
3- when starting the j2ee server, what do i have to
do in order to step
into the code source of Java adventure and follow
low function calls ?The code you want to examine needs to be compiled
with the "-g" flag added to the javac command line.
When -g is specified, javac will save information
in the .class files that is used later during debugging.
4- how do I have to start the jdb to attach to the
J2ee server ?See above...
For more coverage on this topic, refer to:
JPDA Connection and Invocation Details
http://java.sun.com/j2se/1.4.2/docs/guide/jpda/conninv.html
5- Any useful tip to debug J2ee apps ! :-)That is a bit outside the scope of this forum... sorry.
Any useful tips will depend on what J2EE app server you
are using. Most of the well-known servers come with
a debugging guide. For example, take a look at:
Debugging J2EE Applications in the SunOne Application Server
documentation:
http://docs.sun.com/source/817-2171-10/dgdebug.html
Thanks in advance !Best Regards...

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Karthick_Arp wrote:
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Google gave me this from the Oracle 11.1 PL/SQL Langauge Reference:
>
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>
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hello
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hi,
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Hello!
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Edited by: gnrx on Jan 12, 2009 5:55 AM

It works on my system.
MyClass.java
package com.foo.java;
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MyFXScript.fx
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import com.foo.java.*;
var myClass = new MyClass();
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midp-run:
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Hello Steve,
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Hi All,
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take the code out of bpel. run it standalone. does it work?
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Just Starting out with java packages

Hello,
I'm a beginner and I'm starting out with java packages.
I wrote two simple .java files, one test program and one containing a simple class.
Both files are compiling without errors but When I run the program I get an error NoClassDeffoundError.
I use the import <package> statement And I think I'm using the CLASSPATH variable correctly.
SET CLASSPATH=d:\nopol
path for the .java containing the test class is:
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Thanks beforehand
Nopol.

The test file should be in d:\nopol, if it's not a part of your package utilities.myapp. Everything should be compiled from d:\nopol, the test class with "javac ClassName.java" and the class in the package with "javac utilities/myapp/ClassName.java".
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Hi,
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package somepackage;
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Did you change the name of the function in the library, too?
If the function name was
"Java_YourClass_functionname",
it should be now
"Java_path_to_your_package_YourClass_functionname".

Debugging java.* packages

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