How to compile a simple "Hello World" program in Java by using Netbeans

Hi all, I am very new to java programming arena. i am trying to learn the most demanding language for the time being. To program, i always use IDE's as it makes programming experience much easier by underline the syntax errors or sometimes showing codehint. However, I am facing some problem when i use Netbeabs to compile a simple "Hello world" program. my problem is whenever i write the code and press compile button, netbeans says "main class not found". Consequently,i am becoming frustated. So, i am here in this forum to get some kind help on How i can compile java programs in Netbeans. Please help me out, otherwise i may lose my enthusiasm in Java. please help me, i m stuck

Go to http://www.netbeans.org/
You should find tutorials there.

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Steps To execute Simple Hello world programs of struts

Hi,
Can u tell me how to execute the simple hello world programs in struts by using eclipse ID..
and send me the screen shots and what all the jar files we have to copy in lib folder.

>
Can u tell me how to execute the simple hello world programs in struts by using eclipse ID..
and send me the screen shots and what all the jar files we have to copy in lib folder.
>
No. Post the question in an Eclipse forum.

Simple "hello world" program

I have the following code:
public class hello
public static void main(String[] args)
System.out.println("Hello World");
I get the following message when I try to run this program:
Exception in thread "main" java.lang.NoClassDefFoundError: hello
Does anyone know what could be the cause of this error?
Thanks in Advance!!

Please check your class path. Make sure that current working directory is included in it.
If not add it as shown below
set classpath=%classpath%;.;

How to make a simple hello world c program in xcode???

Hello..... I've learnt the basics of c programming recently, They use code blocks (ver 10.05) in my class. Im new to Xcode.. so please can you help me?

Go to http://www.netbeans.org/
You should find tutorials there.

HOW TO: Create a GUI "Hello World"


This document describes how to create and run a very simple "Hello World"
Java GUI app using JDeveloper. The application will have one button and one
text field. Clicking the button will populate the text field with the message,
"Hello World!"
Creating The New Application
In this section, we will create an application with an empty frame.
<ol>
[*]Choose File | New Workspace.
</li>
[*]Choose File | Save Workspace.
</li>
[*]Enter <TT>HelloGui.jws</tt> as the name for the workspace.
This creates a Workspace called HelloGui. A workspace organizes all the projects
you need to work on at one time.
</li>
[*]Choose File | New Project.
The Project Wizard opens. This wizard will help you create a new project called
HelloGui. A project contains all the files that go together in one "tier"--for
example, all the files belonging to a single Java Application client, or all
the files belonging to an Enterprise Java Bean. Because we are working on
a simple, one-tier application, we will only need one project in our workspace.
</li>
[*]If the Welcome page appears, click Next.
</li>
[*]On the Project Type page, in the What is the Project's Filename?
field, change the filename to <TT>HelloGui.jpr</tt>. Leave the rest of the
path the same.
</li>
[*]Select A Project containing a new... and choose Application
from the dropdown list.
</li>
[*]Click Next.
</li>
[*]On the Project Options page, in the What is the name of the project's
default package field, enter <TT>helloGui</tt>.
</li>
[*]Click Next.
</li>
[*]On the Project Information page, you can enter any information about your
project that you wish.
</li>
[*]Click Finish.
The Application Wizard opens.
</li>
[*]In the Class field, enter <TT>HelloApp</tt>.
</li>
[*]Select the New Empty Frame radio button.
</li>
[*]Click OK.
The Frame Wizard opens.
</li>
[*]In the Class field, enter <TT>HelloFrame</tt>.
</li>
[*]Click OK.
JDeveloper creates an application, <TT>HelloApp</tt>, containing an empty
frame, <TT>HelloFrame</tt>. The source code for these classes appears in the
Navigator, which is the upper left-hand pane in the JDeveloper IDE.
</li>
[*]Choose File | Save All.</li>
</ol>
Adding a Panel to the Frame
In this section, we will now add a panel to the frame. In the next section,
we will add all the other components to this panel.
<ol>
[*]In the Navigator, double-click <TT>HelloFrame.java</tt>.
A viewer opens. This viewer has four tabs at the bottom:
<ul>
[*]Source, the currently active tab, which displays the source code
of the selected class</li>
[*]Design, which invokes a visual layout designer</li>
[*]Class, which invokes an editor for the class' attributes, and
can help you stay JavaBean complient</li>
[*]Doc, which displays the class' JavaDoc
</li>
</ul>
</li>
[*]Click the Design tab.
The viewer now displays a grey square, a graphical mock-up of your frame.
Also, on the right-hand side of your screen, the Property Inspector opens.
This allows you to quickly set attributes and define events for components.
</li>
[*]In the component palette (the tabbed toolbar near the top of your screen),
select the Swing Containers tab.
</li>
[*]Click the blue square (described in rollover text as <TT>JPanel</tt>) and
click on your frame to add the panel.
The Property Inspector now displays attributes of the JPanel.
</li>
[*]In the Property Inspector, click twice inside the box beside the name
field.
</li>
[*]Change the name to mainPanel.
</li>
[*]Click the box beside the layout field.
</li>
[*]Choose XYLayout.
XYLayout is an easy-to-use Layout for prototyping. Later, we will change the
layout to a more portable one.</li>
</ol>
Adding Components to the Panel
In this section, we finish laying out a prototype UI. We will add polish and
portability to the UI later.
<ol>
[*]In the Component Palette, select the Swing tab.
</li>
[*]Select the <TT>JTextField</tt> component, which looks like a text field
with a cursor.
</li>
[*]In your panel, click and drag the cursor to outline the text field.
Don't worry if the text field doesn't have exactly the right size or position.
We will adjust these later.
The Property Inspector now displays attributes of the JTextField.
</li>
[*]In the Property Inspector, change the name (just as you did for the
JPanel) to <TT>displayField</tt>.
</li>
[*]Change the text to nothing (erase the value that is already there).
</li>
[*]In the Component Palette, select the <TT>JButton</tt> component, which looks
like a button being clicked.
</li>
[*]In your panel, click and drag the cursor to outline the button.
The Property Inspector now displays attributes of the JButton.
</li>
[*]In the Property Inspector, change the name and action command
to helloButton.
</li>
[*]Change the text to <TT>Say Hello!</tt>.
</li>
[*]Choose File | Save All.</li>
</ol>
Wiring Up the UI
In this section, we wire the UI so that clicking the button causes "Hello
World!" to display in the text field.
<ol>
[*]In the Property Inspector, select the Events tab.
</li>
[*]Click the box next to the Action Performed field and press the Enter
key.
This creates a method, <TT>helloButton_actionPerformed()</tt>, which will
be invoked when the button is clicked, and displays the source code for the
method stub in the viewer.
</li>
[*]In the viewer, add the following command to the body of the method:
<TT>displayField.setText("Hello World!");</tt>
</li>
[*]Choose File | Save All.</li>
</ol>
Testing the Prototype Application
<ol>
[*]Choose Run | Run "HelloApp".
Your application appears, with a blank text field and a button labeled "Say
Hello!"
</li>
[*]Click the button.
The text "Hello World!" appears in the text field.
</li>
[*]Close your application.</li>
</ol>
Refining the UI
In this section, we polish the UI so that the components have the right size
and alignment, the text in the text field shows up red, and the panel uses the
portable GridBag layout instead of the JDeveloper-specific XYLayout.
<ol>
[*]In the viewer, select the Design tab.
</li>
[*]Select your text field.
</li>
[*]Drag the edges of your text field until it is the size you want.
</li>
[*]Drag the center of the text field until it is the vertical position you
want.
</li>
[*]Right-click the text field and choose Align Center.
This centers your text field horizontally in the frame.
</li>
[*]In the property inspector, click the box next to the foreground field.
</li>
[*]Click the ellipses (...).
A color editor appears.
</li>
[*]Select Red from the dropdown list.
</li>
[*]Click OK.
</li>
[*]On your frame, select your button.
</li>
[*]Drag the right edge of your button until it is the horizontal size you want.
</li>
[*]Select your text field, and multi-select your button by control-clicking
it.
</li>
[*]Right-click your button or text field.
</li>
[*]Choose Same Size Vertical.
This sets the height of all selected components to that of the first selected
component (the text field).
</li>
[*]Right-click your button or text field.
</li>
[*]Choose Align Center.
This aligns the center of all selected components to that of the first selected
component (the text field).
</li>
[*]Select your panel by clicking anywhere on the grey background in the visual
designer.
</li>
[*]In the Property Inspector, click the box beside the layout field.
</li>
[*]Select GridBagLayout from the dropdown list.
</li>
[*]Choose File | Save All.</li>
</ol>
Running the Finished Application From Within JDeveloper
<ol>
[*]Choose Run | Run "HelloApp".
Your application appears, with a blank text field and a button labeled "Say
Hello!"
</li>
[*]Click the button.
The text "Hello World!" appears in the text field, in red.
</li>
[*]Close your application.</li>
</ol>
Deploying the Application to Your File System
<ol>
[*] In the Navigator, right-click <tt>HelloGui.jpr</tt> and choose New Deployment
Profile.
The Deployment Profile Wizard opens.
</li>
[*]If the Welcome page appears, click Next.
</li>
[*]On the Delivery page, select Web Application or Command-Line Application
from the dropdown list, and click Next.
</li>
[*]On the Staging Area page, in the Deployment Destination field, enter
<tt><JDeveloper>/HelloGui</tt>, where <tt><JDeveloper></tt>
is your JDeveloper root directory. Click Next.
</li>
[*]On the Project page, select all the <tt>.java</tt> files and click Next.
</li>
[*]Skip the Archive page and Applet Tags page by clicking Next on each.
</li>
[*]On the Libraries page, shuttle all libraries from the Project Libraries
list to the Deployed Libraries list, and click Next.
</li>
[*]On the Finish page, name the profile <tt>HelloGui.prf</tt>, and click Finish.
</li>
[*]When JDeveloper asks you if you want to deploy now, click Yes.</li>
</ol>
JDeveloper will archive your application files and copy this archive and all
other required libraries to <tt><JDeveloper>/HelloGui</tt>.
Running the Application from the Command Line
<ol>
[*]Open a command-line prompt.
</li>
[*]Enter the following script.
Note: You may want to create a batch file containing this script. Be
sure to replace JDeveloper_Home with your JDeveloper home directory.
<pre>set __CLASSPATH_ROOT_DIR__=JDeveloper_Home\HelloGui
set CLASSPATH="%__CLASSPATH_ROOT_DIR__%\HelloGui.jar"
set CLASSPATH=%CLASSPATH%;"%__CLASSPATH_ROOT_DIR__%\xmlparserv2.jar"
set CLASSPATH=%CLASSPATH%;"%__CLASSPATH_ROOT_DIR__%\classes12.zip"
set CLASSPATH=%CLASSPATH%;"%__CLASSPATH_ROOT_DIR__%\jdev-rt.zip"
set CLASSPATH=%CLASSPATH%;"%__CLASSPATH_ROOT_DIR__%\swingall.jar"
cd JDeveloper_Home\HelloGui
jre -cp %CLASSPATH% helloGui.HelloApp</pre>
</li>
[*]Your application appears, with a blank text field and a button labeled "Say
Hello!"
</li>
[*]Click the button.
The text "Hello World!" appears in the text field, in red.
</li>
[*]Close your application.</li>
</ol>


null

Hello,
I followed your instruction step by step to make this "Hello World", but when I run it, I got message "cannot find the runable node". What do I miss here? Thanks.
<BLOCKQUOTE>quote:<HR>Originally posted by Avrom Faderman ([email protected]):

This document describes how to create and run a very simple "Hello World"
Java GUI app using JDeveloper. The application will have one button and one
text field. Clicking the button will populate the text field with the message,
"Hello World!"
[b]Creating The New Application
In this section, we will create an application with an empty frame.
<ol>
[*]Choose File | New Workspace.
</li>
[*]Choose File | Save Workspace.
</li>
[*]Enter <TT>HelloGui.jws</tt> as the name for the workspace.
This creates a Workspace called HelloGui. A workspace organizes all the projects
you need to work on at one time.
</li>
[*]Choose File | New Project.
The Project Wizard opens. This wizard will help you create a new project called
HelloGui. A project contains all the files that go together in one "tier"--for
example, all the files belonging to a single Java Application client, or all
the files belonging to an Enterprise Java Bean. Because we are working on
a simple, one-tier application, we will only need one project in our workspace.
</li>
[*]If the Welcome page appears, click Next.
</li>
[*]On the Project Type page, in the What is the Project's Filename?
field, change the filename to <TT>HelloGui.jpr</tt>. Leave the rest of the
path the same.
</li>
[*]Select A Project containing a new... and choose Application
from the dropdown list.
</li>
[*]Click Next.
</li>
[*]On the Project Options page, in the What is the name of the project's
default package field, enter <TT>helloGui</tt>.
</li>
[*]Click Next.
</li>
[*]On the Project Information page, you can enter any information about your
project that you wish.
</li>
[*]Click Finish.
The Application Wizard opens.
</li>
[*]In the Class field, enter <TT>HelloApp</tt>.
</li>
[*]Select the New Empty Frame radio button.
</li>
[*]Click OK.
The Frame Wizard opens.
</li>
[*]In the Class field, enter <TT>HelloFrame</tt>.
</li>
[*]Click OK.
JDeveloper creates an application, <TT>HelloApp</tt>, containing an empty
frame, <TT>HelloFrame</tt>. The source code for these classes appears in the
Navigator, which is the upper left-hand pane in the JDeveloper IDE.
</li>
[*]Choose File | Save All.</li>
</ol>
Adding a Panel to the Frame
In this section, we will now add a panel to the frame. In the next section,
we will add all the other components to this panel.
<ol>
[*]In the Navigator, double-click <TT>HelloFrame.java</tt>.
A viewer opens. This viewer has four tabs at the bottom:
<ul>
[*]Source, the currently active tab, which displays the source code
of the selected class</li>
[*]Design, which invokes a visual layout designer</li>
[*]Class, which invokes an editor for the class' attributes, and
can help you stay JavaBean complient</li>
[*]Doc, which displays the class' JavaDoc
</li>
</ul>
</li>
[*]Click the Design tab.
The viewer now displays a grey square, a graphical mock-up of your frame.
Also, on the right-hand side of your screen, the Property Inspector opens.
This allows you to quickly set attributes and define events for components.
</li>
[*]In the component palette (the tabbed toolbar near the top of your screen),
select the Swing Containers tab.
</li>
[*]Click the blue square (described in rollover text as <TT>JPanel</tt>) and
click on your frame to add the panel.
The Property Inspector now displays attributes of the JPanel.
</li>
[*]In the Property Inspector, click twice inside the box beside the name
field.
</li>
[*]Change the name to mainPanel.
</li>
[*]Click the box beside the layout field.
</li>
[*]Choose XYLayout.
XYLayout is an easy-to-use Layout for prototyping. Later, we will change the
layout to a more portable one.</li>
</ol>
Adding Components to the Panel
In this section, we finish laying out a prototype UI. We will add polish and
portability to the UI later.
<ol>
[*]In the Component Palette, select the Swing tab.
</li>
[*]Select the <TT>JTextField</tt> component, which looks like a text field
with a cursor.
</li>
[*]In your panel, click and drag the cursor to outline the text field.
Don't worry if the text field doesn't have exactly the right size or position.
We will adjust these later.
The Property Inspector now displays attributes of the JTextField.
</li>
[*]In the Property Inspector, change the name (just as you did for the
JPanel) to <TT>displayField</tt>.
</li>
[*]Change the text to nothing (erase the value that is already there).
</li>
[*]In the Component Palette, select the <TT>JButton</tt> component, which looks
like a button being clicked.
</li>
[*]In your panel, click and drag the cursor to outline the button.
The Property Inspector now displays attributes of the JButton.
</li>
[*]In the Property Inspector, change the name and action command
to helloButton.
</li>
[*]Change the text to <TT>Say Hello!</tt>.
</li>
[*]Choose File | Save All.</li>
</ol>
Wiring Up the UI
In this section, we wire the UI so that clicking the button causes "Hello
World!" to display in the text field.
<ol>
[*]In the Property Inspector, select the Events tab.
</li>
[*]Click the box next to the Action Performed field and press the Enter
key.
This creates a method, <TT>helloButton_actionPerformed()</tt>, which will
be invoked when the button is clicked, and displays the source code for the
method stub in the viewer.
</li>
[*]In the viewer, add the following command to the body of the method:
<TT>displayField.setText("Hello World!");</tt>
</li>
[*]Choose File | Save All.</li>
</ol>
Testing the Prototype Application
<ol>
[*]Choose Run | Run "HelloApp".
Your application appears, with a blank text field and a button labeled "Say
Hello!"
</li>
[*]Click the button.
The text "Hello World!" appears in the text field.
</li>
[*]Close your application.</li>
</ol>
Refining the UI
In this section, we polish the UI so that the components have the right size
and alignment, the text in the text field shows up red, and the panel uses the
portable GridBag layout instead of the JDeveloper-specific XYLayout.
<ol>
[*]In the viewer, select the Design tab.
</li>
[*]Select your text field.
</li>
[*]Drag the edges of your text field until it is the size you want.
</li>
[*]Drag the center of the text field until it is the vertical position you
want.
</li>
[*]Right-click the text field and choose Align Center.
This centers your text field horizontally in the frame.
</li>
[*]In the property inspector, click the box next to the foreground field.
</li>
[*]Click the ellipses (...).
A color editor appears.
</li>
[*]Select Red from the dropdown list.
</li>
[*]Click OK.
</li>
[*]On your frame, select your button.
</li>
[*]Drag the right edge of your button until it is the horizontal size you want.
</li>
[*]Select your text field, and multi-select your button by control-clicking
it.
</li>
[*]Right-click your button or text field.
</li>
[*]Choose Same Size Vertical.
This sets the height of all selected components to that of the first selected
component (the text field).
</li>
[*]Right-click your button or text field.
</li>
[*]Choose Align Center.
This aligns the center of all selected components to that of the first selected
component (the text field).
</li>
[*]Select your panel by clicking anywhere on the grey background in the visual
designer.
</li>
[*]In the Property Inspector, click the box beside the layout field.
</li>
[*]Select GridBagLayout from the dropdown list.
</li>
[*]Choose File | Save All.</li>
</ol>
Running the Finished Application From Within JDeveloper
<ol>
[*]Choose Run | Run "HelloApp".
Your application appears, with a blank text field and a button labeled "Say
Hello!"
</li>
[*]Click the button.
The text "Hello World!" appears in the text field, in red.
</li>
[*]Close your application.</li>
</ol>
Deploying the Application to Your File System
<ol>
[*] In the Navigator, right-click <tt>HelloGui.jpr</tt> and choose New Deployment
Profile.
The Deployment Profile Wizard opens.
</li>
[*]If the Welcome page appears, click Next.
</li>
[*]On the Delivery page, select Web Application or Command-Line Application
from the dropdown list, and click Next.
</li>
[*]On the Staging Area page, in the Deployment Destination field, enter
<tt><JDeveloper>/HelloGui</tt>, where <tt><JDeveloper></tt>
is your JDeveloper root directory. Click Next.
</li>
[*]On the Project page, select all the <tt>.java</tt> files and click Next.
</li>
[*]Skip the Archive page and Applet Tags page by clicking Next on each.
</li>
[*]On the Libraries page, shuttle all libraries from the Project Libraries
list to the Deployed Libraries list, and click Next.
</li>
[*]On the Finish page, name the profile <tt>HelloGui.prf</tt>, and click Finish.
</li>
[*]When JDeveloper asks you if you want to deploy now, click Yes.</li>
</ol>
JDeveloper will archive your application files and copy this archive and all
other required libraries to <tt><JDeveloper>/HelloGui</tt>.
Running the Application from the Command Line
<ol>
[*]Open a command-line prompt.
</li>
[*]Enter the following script.
Note: You may want to create a batch file containing this script. Be
sure to replace JDeveloper_Home with your JDeveloper home directory.
<pre>set __CLASSPATH_ROOT_DIR__=JDeveloper_Home\HelloGui
set CLASSPATH="%__CLASSPATH_ROOT_DIR__%\HelloGui.jar"
set CLASSPATH=%CLASSPATH%;"%__CLASSPATH_ROOT_DIR__%\xmlparserv2.jar"
set CLASSPATH=%CLASSPATH%;"%__CLASSPATH_ROOT_DIR__%\classes12.zip"
set CLASSPATH=%CLASSPATH%;"%__CLASSPATH_ROOT_DIR__%\jdev-rt.zip"
set CLASSPATH=%CLASSPATH%;"%__CLASSPATH_ROOT_DIR__%\swingall.jar"
cd JDeveloper_Home\HelloGui
jre -cp %CLASSPATH% helloGui.HelloApp</pre>
</li>
[*]Your application appears, with a blank text field and a button labeled "Say
Hello!"
</li>
[*]Click the button.
The text "Hello World!" appears in the text field, in red.
</li>
[*]Close your application.</li>
</ol>

<HR></BLOCKQUOTE>
null

While running hello world program for 12.1.3, getting error

We followed the instruction given in dev tutorial and set the 12.1.3 jdev.
When try to run the “Hello World” program, got error
“You have insufficient privilege”
Solution:
I changed the setting as below and it worked.
Jdeveloper -> Tools -> Embedded OC4J server setting -> start up
Choose option: Default IP address
And issue got resolved.
I want to share this with everyone.

We followed the instruction given in dev tutorial and set the 12.1.3 jdev.
When try to run the “Hello World” program, got error
“You have insufficient privilege”
Solution:
I changed the setting as below and it worked.
Jdeveloper -> Tools -> Embedded OC4J server setting -> start up
Choose option: Default IP address
And issue got resolved.
I want to share this with everyone.

How can i return object from oracle in my java code using pl/sql procedure?

How can i return object from oracle in my java code using pl/sql procedure?
And How can i returned varios rows fron a pl/sql store procedure
please send me a example....
Thank you
null

yes, i do
But i can't run this examples...
my problem is that i want recive a object from a PL/SQL
//procedure callObject(miObj out MyObject)
in my java code
public static EmployeeObj callObject(Connection lv_con,
String pv_idEmp)
EmployeeObj ret = new EmployeeObj();
try
CallableStatement cstmt =
lv_con.prepareCall("{call admin.callObject(?)}");
cstmt.registerOutParameter(1, OracleTypes.STRUCT); // line ocurr wrong
//registerOutParameter(int parameterIndex, int sqlType,String sql_name)
cstmt.execute();
ret = (EmployeeObj) cstmt.getObject(1);
}//try
catch (SQLException ex)
System.out.println("error SQL");
System.out.println ("\n*** SQLException caught ***\n");
while (ex != null)
System.out.println ("SQLState: " + ex.getSQLState ());
System.out.println ("Message: " + ex.getMessage ());
System.out.println ("Vendor: " + ex.getErrorCode ());
ex = ex.getNextException ();
System.out.println ("");
catch (java.lang.Exception ex)
System.out.println("error Lenguaje");
return ret;
Do you have any idea?

Loading a simple Hello World Applet faster?

I'm new to java. I;m trying to load the hello world applet but the problem is that it takes about 20 to 30 seconds to load at first attempt, I there a way to make this faster, i have tryed making a jar file and running that but nothing changes in speed.

Well, it's always going to be slower to run the applet in a web page in a browser because you have the extra steps of the browser grabbing the files over the network, parsing the HTML fully, displaying the page, and starting the JVM. The appletviewer grabs the files locally, does a simpler parse of the HTML, doesn't have to display much HTML, and already is a JVM.
In my experience, JVMs inside of browsers (the early days) were significantly slower than a JVM you invoked on the command line. Now that there's the plug-in, it's still slower but not by much.
What browser are you using? Are you using a modern browser and the Java plug-in or are you using, say, and old browser with the JVM built in?
Also, how long does it take to download the HTML and the class file from the server? What happens when you download them directly with something like wget or curl?

How to compile and execute lex,yac,c and java programs

its the 3rd day on my New MacBook pro..
as i just migrated from windows to mac i love to work on this..
The main problem is i DON't know .......
how to compile and execute
1) lex and yac programs
2) c program
3) java program
so please help me
THIS is the error i got   a1.l is a program
i got the same error when i used gcc
$ lex a1.l
$ cc lex.yy.c
Undefined symbols:
"_yywrap", referenced from:
      _yylex in cc8QDQjW.o
      _input in cc8QDQjW.o
ld: symbol(s) not found
collect2: ld returned 1 exit status

Is the problem that you don't know how to compile and execute these programs on a Mac, or just that you don't know how to compile and execute them?
Mac OS X is really just a version of BSD Unix, as far as programs like like bison, flex and gcc are concerned...and even when Apple specific versions are provided in the Developer Tools, there are symlinks in the usual places in the Unix file hierarchy.
For problems with lex and yacc, I suggest you start with their own references, for example, here.
Or you could just use %option noyywrap, if you only have one file to scan.
Or you could link to libfl.a using -lfl and use the default version from that library.
But you really should (as Keith Barkley was subtly hinting at) learn how these tools work and why they work that way.

Exception in Hello World Program in Hibernate

Hi All
I am trying to run my first "Hello World" hibernate program in the book "Java Persitance with Hibernate". I have written the model class and the main class.
I have also create the mapping file Message.hbm.xml and hibernate configuration file hibernate.cfg.xml through hibernate tools. Now when I am running the main class i am getting the following exception.
SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
Exception in thread "main" java.lang.ExceptionInInitializerError
 at com.hibernate.test.HibernateUtil.<clinit>(HibernateUtil.java:17)
 at com.hibernate.test.HelloWorld.main(HelloWorld.java:15)
Caused by: java.lang.NoClassDefFoundError: org/slf4j/impl/StaticLoggerBinder
 at org.slf4j.LoggerFactory.getSingleton(LoggerFactory.java:223)
 at org.slf4j.LoggerFactory.bind(LoggerFactory.java:120)
 at org.slf4j.LoggerFactory.performInitialization(LoggerFactory.java:111)
 at org.slf4j.LoggerFactory.getILoggerFactory(LoggerFactory.java:269)
 at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:242)
 at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:255)
 at org.hibernate.cfg.Configuration.<clinit>(Configuration.java:165)
 at com.hibernate.test.HibernateUtil.<clinit>(HibernateUtil.java:15)
 ... 1 more
Caused by: java.lang.ClassNotFoundException: org.slf4j.impl.StaticLoggerBinder
 at java.net.URLClassLoader$1.run(Unknown Source)
 at java.security.AccessController.doPrivileged(Native Method)
 at java.net.URLClassLoader.findClass(Unknown Source)
 at java.lang.ClassLoader.loadClass(Unknown Source)
 at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
 at java.lang.ClassLoader.loadClass(Unknown Source)
 at java.lang.ClassLoader.loadClassInternal(Unknown Source)
 ... 9 moreI have added the following jars from the folder hibernate-distribution-3.5.2-Final\lib\required
commons-collections-3.1.jar
dom4j-1.6.1.jar
javassist-3.9.0.GA.jar
jta-1.1.jar
slf4j-api-1.5.8.jar
and hibernate3.jar to the classpath.
It would be great if someone could help me in resolving this problem
Thanks in advance
Fierof2

user13519911 wrote:
I have posted this question here because this is a hibernate program with is related to database connectivity. What i would like to know is what is the jar file i am missing and why is it not present in the required folders of hibernate distribution.Yeah. With that kind of unproductive attitude I suddenly lose all interest in helping. So weird.
Guess I'll do what I like: be blunt. You are allowed to think. I suggest you do so.

Problem with "Hello World" program

i am new to java.
i have recently installed java and the version is :
E:\>java -showversion
java version "1.6.0_06"
Java(TM) SE Runtime Environment (build 1.6.0_06-b02)
Java HotSpot(TM) Client VM (build 10.0-b22, mixed mode, sharing)
First.java_
class First
public static void main (String[] args)
System.out.println("Hello World!");
My "First.java" compiles fine.
but,when i execute it, i got the following Error:
E:\>javac First.java
E:\>java First
Exception in thread "main" java.lang.NoClassDefFoundError: First
Caused by: java.lang.ClassNotFoundException: First
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:276)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
i need assistance..

As stated in the [thread earlier today|http://forum.java.sun.com/thread.jspa?threadID=5304111&tstart=0], you need to specify the classpath like this:
java -cp . First(Note that there is a period between the -cp and First with spaces separating the period from the -cp and the First).

How to compile and run PRO*C programs in Linux

Hi all,
This is my first post in this forum.
I have Oracle 9i installed in linux platform .
How can i compile and run Pro*C programs in linux.(i mean any commands or procedure to run these programs)
please help me in this regard.
Thanks in advance,
Trinath Somanchi,
Hyderabad .

(1) How to compile the Pro*c program U got to have a makefile to compile a Pro*c program. It helps u in compiling and creating an excutable. Once U have created a makefile , just call "make" and it will do the compilation and create the executable as well.
For a sample makefile visit
http://asktom.oracle.com/~tkyte/proc_makefile/
(2) How to run the Pro*c program ? and Once U have created an executable, U shall call that directly as any other linux command. Make sure U have the permissions to run the executable. If not give the permissions using chmod 777 executable
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Friends:
I open xCode 3.0 on Leopard and I make a new project using the command line utility standard tool and enter the following application:
#include <iostream>
using namespace std;
int main()
cout << "Hello world";
return 0;
...and it doesn't build.
How can I fix this?
Thanks amigos! -Migs

The errors:
After the include: error: iostream: No such file or directory
After using namesapce: error: syntax error before namespace and warning: data definition has no type or storage calss
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Hello @ all,
I want to develop a little "hello world" servlet which runs on a sap j2ee 6.20.
Writing the code is not the problem
But I do not know which steps I have to do in order to get the servlet to run.
Do I have to create an ear-File? If yes how can I build an ear-File!
Or is the a way to just create a folder in the root of the j2ee with an WEB-INF folder! I tried this but it dosn´t work!
Is there perhaps a plugin available for eclipse 2.1 to develop and deploy the application to the sap j2ee??
Thanks alot for your help!
Best regards
Kai

Hi Kai.
Coding is always cool!! Never a problem
>>Do I have to create an ear-File? If yes how can I build an ear-File!
Anyways, If you have created the J2EE application then you have to build a Web Applicatipn Project. And then give the reference of your application to this Web Application Project. Now craete a archive file of this web application project.
When you will do this a .ear file will be created and a .war file will also be created in your application. Noe Deploy ear to J2ee engine. It will ask for the password of SDM. Give that password and it will be deployed on the SAP J2ee engine.
To run the application write:
http://<my_server>:<my_port>/irj/servlet/<my_application_name>/
This will run your application. Hope this will help.
Do award points if you find answer is helpful for you.
Rgds
Vikas

Basic (and I mean basic) java problem with a simple hello world script

I have a simple cut-and-paste html page and java class in my /home/jc158027/java directory.
jc158027> cat HelloWorld.java
import java.applet.*;
import java.awt.*;
public class HelloWorld extends Applet{
Label helloLabel = new Label ("Hello World");
public void init () {
setBackground (Color.yellow);
add (helloLabel);
}Ok, so I javac HelloWorld.java and get HelloWorld.class, so far so good.
Next I create my html page:
jc158027> cat hw.html
<HTML>
<HEAD>
<TITLE>Jay's Java Test Page</TITLE>
<BODY>
<HR>
This line of text comes before the applet.
<APPLET CODE = 'HelloWorld.class" WIDTH=500 Height=90>
</APPLET>

This line of text comes after the applet.
</BODY>
</HTML>The result is that the text lines work, I get a nice grey box with no applet running. Looking at my console I get the following error:
Caused by: java.io.FileNotFoundException: /home/jc158027/java/HelloWorld/class".class (No such file or directory)
What I don't understand is the HelloWorld/class".class portion, shouldn't it be just either HelloWorld".class or HelloWorld/class, it is as though it is trying to look in a directory (class) that does not exist.
What am I missing here?

And if you put dots in where it expects a class name, it assumes those dots are to separate levels in a package name.
So it was looking for a class named "class", which would be in a file called class.class, in a package named "HelloWorld". Packages correspond to directories relative to some classpath root, so it looked for the directory HelloWorld to be the parent of the classes in the HelloWorld package.

How to compile a simple "Hello World" program in Java by using Netbeans

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