EJB deployment error

[vijaya bacina]

hi everybody....
first of all thx to javaranch for providing useful forums like this
 
i am a beginner to EJBs .. i have a problem in deploying EJB 
im using weblogic 8.1
 
my project steps are:
1)create a EJBObject ---->Hello.java
2)create a EJBHome object---> HelloHome.java
3) create bean class---> HelloBean.java
4) optaionally i created Local and Local home objects -- HelloLocal.java, HelloLocalHome.java
5)create a META-INF directory
4)in that directory place ejb-jar.xml, sun-ejb-jar.xml, weblogic-ejb-jar.xml
5)set classpath="weblogic-home/lib/weblogic.jar";
6)compiled all calsses with command javac *.java---->all the class files in examples folder are created frm this step
7)created a jar file using 
   C:\Documents and Settings\Administrator\Desktop\examples>jar cvf helloworld.jar * 
   helloworld.jar file in examples folder is the result... u can even see what r ziped into jar file using  <"jar -tf helloworld.jar">
8)tried to generate vendor specific files using...............
   C:\Documents and Settings\Administrator\Desktop\examples>java weblogic.ejbc helloworld.jar
 
<Aug 23, 2005 9:30:53 AM CDT> <Warning> <EJB> <BEA-010054> <EJB Deployment: HelloBean has a class HelloBean that is in the classpath. 
This class should only be located in the ejb-jar file.>
<Aug 23, 2005 9:30:54 AM CDT> <Warning> <EJB> <BEA-010054> <EJB Deployment: HelloBean has a class HelloHome that is in the classpath. 
This class should only be located in the ejb-jar file.>
<Aug 23, 2005 9:30:54 AM CDT> <Warning> <EJB> <BEA-010054> <EJB Deployment: HelloBean has a class Hello that is in the classpath. 
This class should only be located in the ejb-jar file.>
<Aug 23, 2005 9:30:54 AM CDT> <Warning> <EJB> <BEA-010212> <The EJB 'HelloBean(Jar: helloworld.jar)' contains at least one method 
without an explicit transaction attribute setting. 
The default transaction attribute of Supports will be usedfor the following methods: remote[hello()]  >
Compiler class: 'com.sun.tools.javac.Main', not found
java.lang.ClassNotFoundException: com.sun.tools.javac.Main
        at java.net.URLClassLoader$1.run(URLClassLoader.java:199)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:187)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:289)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:274)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:235)
        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:141)
        at weblogic.utils.compiler.CompilerInvoker.compileMaybeExit(CompilerInvoker.java:406)
        at weblogic.utils.compiler.CompilerInvoker.compile(CompilerInvoker.java:328)
        at weblogic.utils.compiler.CompilerInvoker.compile(CompilerInvoker.java:336)
        at weblogic.ejb20.ejbc.EJBCompiler.doCompile(EJBCompiler.java:270)
        at weblogic.ejb20.ejbc.EJBCompiler.compileEJB(EJBCompiler.java:476)
        at weblogic.ejb20.ejbc.EJBCompiler.compileEJB(EJBCompiler.java:397)
        at weblogic.ejbc20.runBody(ejbc20.java:517)
        at weblogic.utils.compiler.Tool.run(Tool.java:192)
        at weblogic.utils.compiler.Tool.run(Tool.java:147)
        at weblogic.ejbc.main(ejbc.java:29)
 
ERROR: Error from ejbc: Compiler class: 'com.sun.tools.javac.Main', not found
 

ERROR: ejbc couldn't invoke compiler
 

ANY IDEA ABOUT THIS ERROR ... PLZ REPLY  

THANX IN ADVANCE

[Vicky Mohan]

I guess you need to have tools.jar in your CLASSPATH.

[vijaya bacina]

hi
thx a lot... my EJB deployed successfully
but when i try to compile client.. again i am getting error
i am beginner to ejbs and this is my first EJB...


C:\Documents and Settings\Administrator\Desktop\examples>javac HelloClient.java
HelloClient.java:46: cannot resolve symbol
symbol : class HelloHome
location: class examples.HelloClient
HelloHome home = (HelloHome)
^
HelloClient.java:46: cannot resolve symbol
symbol : class HelloHome
location: class examples.HelloClient
HelloHome home = (HelloHome)
^
HelloClient.java:48: cannot resolve symbol
symbol : class HelloHome
location: class examples.HelloClient
obj, HelloHome.class);
^
HelloClient.java:53: cannot resolve symbol
symbol : class Hello
location: class examples.HelloClient
Hello hello = home.create();
^
4 errors

Plz reply if anybody know
thanx

[Vicky Mohan]

Are you sure if you have the EJB's visible to the client. My guess is, you do not have the EJB's available for the client ( problem in referring them). Please make sure you have the package structure etc correct.

let us know what happens...

[vijaya bacina]

hi
I placed EJBObject-->hello.java ,
EJBHome object---> HelloHome.java
and bean class---> HelloBean.java
and META-INf in examples folder which is on my desktop

and compiled nad packaged them from there

finally i put my client program also in examples folder

package examples;
 
import javax.naming.Context;
import javax.naming.InitialContext;
import java.util.Properties;
 
public class HelloClient {
 
public static void main(String[] args) throws Exception {

Properties props = System.getProperties();
 
Context ctx = new InitialContext(props);
 
Object obj = ctx.lookup("HelloHome");
 
HelloHome home = (HelloHome)javax.rmi.PortableRemoteObject.narrow(obj, HelloHome.class);
 
Hello hello = home.create();
 
System.out.println(hello.hello());

hello.remove();
}
}
  

how can i make my EJBs visible to client
i even placed the helloworld.jar in classpath also
plz tell me

[vijaya bacina]

hi
Actually i am getting errors like this


C:\Documents and Settings\Administrator\Desktop\examples>javac HelloClient.java
HelloClient.java:17: cannot resolve symbol
symbol : class HelloHome
location: class examples.HelloClient
HelloHome home = (HelloHome) javax.rmi.PortableRemoteObject.n
arrow(obj, HelloHome.class);
^
HelloClient.java:17: cannot resolve symbol
symbol : class HelloHome
location: class examples.HelloClient
HelloHome home = (HelloHome) javax.rmi.PortableRemoteObject.n
arrow(obj, HelloHome.class);
^
HelloClient.java:17: cannot resolve symbol
symbol : class HelloHome
location: class examples.HelloClient
HelloHome home = (HelloHome) javax.rmi.PortableRemoteObject.n
arrow(obj, HelloHome.class);

^
HelloClient.java:19: cannot resolve symbol
symbol : class Hello
location: class examples.HelloClient
Hello hello = home.create();
^
4 errors

[Kunaal A Trehan]

Hi

Do one thing create a jar of our EJB files
and put that in classpath

I feel it shd work

Kunal

[vijaya bacina]

hi
Thx kunal..my EJB client compiled after placed the jar file in classpath..but not executing


C:\Documents and Settings\Administrator\Desktop\ejbs\examples>java HelloClient
Exception in thread "main" java.lang.NoClassDefFoundError: HelloClient (wrong na
me: examples/HelloClient)
at java.lang.ClassLoader.defineClass0(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:539)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:12
3)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:251)
at java.net.URLClassLoader.access$100(URLClassLoader.java:55)
at java.net.URLClassLoader$1.run(URLClassLoader.java:194)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:187)
at java.lang.ClassLoader.loadClass(ClassLoader.java:289)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:274)
at java.lang.ClassLoader.loadClass(ClassLoader.java:235)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302)

Plz reply

[Chao Garreson]

read the J2ee1.4 tutorial on "Getting Started with Enterprise Beans" in this section you will get the answers how to run your Clients