Problem compiling - Missing classes???

I am trying to recompile my java classes using javac.exe and I get about 38 errors all saying "cannot resolve symbol"...I used to get more, but I figured it couldn't find some of the classes. I looked in the .java file and found the list of imports and found most of them, but I can not find the following that are being called:
import java.applet.Applet;
import java.applet.AppletContext;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.net.*;
import java.util.*;
From what i have read, they should come with the Java 1.31 development kit, but I do not find them anywhere on my machine. I am new to Java and was asked to make some changes, so any help on this would really be appreciated.
Thanks.

These are all in the Java system jar. Do you have JRE or JVM installed?
You could try reinstalling Java JVM.
Regards,
Tim

Similar Messages

Problem compiling Abstract class

Hi
I have writting an abstract class Sort.java and another class BubbleSort.java. I am having problems compiling BubbleSort.java class.
The following is the error message
BubbleSort.java:8: missing method body, or declare abstract
public int doSorting(int[] array);
^
BubbleSort.java:11: return outside method
return num;
^
The following is the code
public abstract class Sort
public abstract int doSorting(int[] array);
}// End of class
public class BubbleSort extends Sort
private int num = 2;
public int doSorting(int[] array);
num = num + 2;
return num;
} // end of class

Remove the semi-colon.
public int doSorting(int[] array); // <------- there

Problem Compiling Inner Class

Can anyone tell me why the following won't compile?
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I had coded the thing like:
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Problems running servlet due to missing classes?

Hi everyone,
I am doing a project which requires me to convert a java coding into a servlet. This java coding I am working on is some kind of location based service which tracks people (receiving an argument of a string as IP). It imports an external SDK called Ekahau SDK (some off the shelve product). Now I wish to convert it into a servlet so that the function that the java coding performs can be run from a webpage i created.
I have previously posted a thread on this forum called "Converting java coding into servlets?" when I had trouble compiling the servlet. Now that I could compile the servlet already, I still have problems running the servlet from my browser.
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description
The server encountered an internal error () that prevented it from fulfilling this request.
exception
javax.servlet.ServletException: Servlet execution threw an exception
root cause
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com.ekahau.G.N.A(Unknown Source)
com.ekahau.G.N.<init>(Unknown Source)
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com.ekahau.sdk.PositioningEngine.connect(Unknown Source)
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coreservlets.testing.doGet(testing.java:36)
javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
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import java.util.*;
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Well, it's kind of logical that as you put more jar files (classes) in Tomcat, it changes the error to ask for the classes (inside a jar) it cannot find.
There was a good class->jar finder on the internet some years ago, but i don't remember the address. Try looking for that and search all the missing classes (NotDefined) and their correspondig jar files.
Good Luck!

XML mapping inheritance problem; missing class indicator field

Hi!
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[TOPLINK-44] missing class indicator field
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Best regards,
Jouke Stoel
Developer

This is the changed XML descriptor file. When I deploy the file it automaticly overrides the old file so it ain't possible that I was still using the wrong file
<toplink:class-indicator-mappings>
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</toplink:class-indicator-mappings>I have posted the stacktrace but I had to translate a bit because my exception was in Dutch :)
Locale is a great invention
Exception [TOPLINK-44] (Oracle TopLink - 10g Release 3 (10.1.3.1.0) (Build 061004)): oracle.toplink.exceptions.DescriptorException
Exception description: Missing class indicator field of database row [UnmarshalRecord()].
Descriptor: XMLDescriptor(Traject --> [])
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     at oracle.xml.parser.v2.NonValidatingParser.parseDocument(NonValidatingParser.java:303)
     at oracle.xml.parser.v2.XMLParser.parse(XMLParser.java:205)
     at oracle.toplink.internal.ox.record.SAXUnmarshaller.unmarshal(SAXUnmarshaller.java:189)
     at oracle.toplink.internal.ox.record.SAXUnmarshaller.unmarshal(SAXUnmarshaller.java:147)
     at oracle.toplink.ox.XMLUnmarshaller.unmarshal(XMLUnmarshaller.java:228)
.

Problems compiling class within package

Hi, I have a package called jicmp, and within this package i have 3 classes, namely timeoutexception, icmppacket and jicmp. the first two compile fine, but when i try to compile jicmp, it complains. in jicmp i have the following methods:
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public icmppacket read()
and it doesnt like to use timeoutexception either. why is this? they are in the same package, and all have the package name at the top, and all are in the same directory..
Any help would be gratefully received
Thanks
Vanessa

Hi,
Did you creat a folder with same name as your package name.
If not, do it first. then compile your class with the following command.
exmample:
C://javac foldername.filename.java
to run:
C://java foldername.filename
it will work.

How to get missing classes from J2SE to J2ME?

Hello,
I am currently developing a J2ME project. As IDE I use Eclipse with the plugin EclipseME. It works great.
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Greetz
schneidexe

Generally, this is not possible. The classes have far to many references to other classes, and there are far to many incompatibilities to make it work.
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Having problems compiling *.java with import javax.servlet.jsp......

I've been trying to do the tutorials in a book titled Apache Jakarta-Tomcat as part of my introduction to JSP. I'm new to Java but do know the basics. I have on my machine Java 1.3, Java 1.4, Java FrameWorks 2.1 and Jython 2.1 on Win2000 Pro. So enough about my configuration. I have never worked with packages also.
I downloaded the files from the books site due to the fact I make a lot of typos when hand coding Java (I've become a pretty good debugger of my own code). But everytime I go to compile the *.java I get error messages. So below you will find HelloTag.java and beneath that the error messages that are thrown when I try and compile it. I tested other bits of *.java and have had no problem compiling them. Is there a JSP module I'm missing?
Am I doing something wrong or am I missing something from my configuration.
Marijan Madunic
package chapter2;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.JspTagException;
import javax.servlet.jsp.tagext.TagSupport;
public class HelloTag extends TagSupport
public void HelloTag() {
// Method called when the closing hello tag is encountered
public int doEndTag() throws JspException {
try {
// We use the pageContext to get a Writer
// We then print the text string Hello
pageContext.getOut().print("Hello");
catch (Exception e) {
throw new JspTagException(e.getMessage());
// We want to return SKIP_BODY because this Tag does not support
// a Tag Body
return SKIP_BODY;
public void release() {
// Call the parent's release to release any resources
// used by the parent tag.
// This is just good practice for when you start creating
// hierarchies of tags.
super.release();
D:\Java\JDK 1.3\bin>javac HelloTag.java
HelloTag.java:3: cannot resolve symbol
symbol : class JspException
location: package jsp
import javax.servlet.jsp.JspException;
^
HelloTag.java:4: cannot resolve symbol
symbol : class JspTagException
location: package jsp
import javax.servlet.jsp.JspTagException;
^
HelloTag.java:5: cannot resolve symbol
symbol : class TagSupport
location: package tagext
import javax.servlet.jsp.tagext.TagSupport;
^
HelloTag.java:7: cannot resolve symbol
symbol : class TagSupport
location: class chapter2.HelloTag
public class HelloTag extends TagSupport
^
HelloTag.java:14: cannot resolve symbol
symbol : class JspException
location: class chapter2.HelloTag
public int doEndTag() throws JspException {
^
HelloTag.java:20: cannot resolve symbol
symbol : variable pageContext
location: class chapter2.HelloTag
pageContext.getOut().print("Hello");
^
HelloTag.java:24: cannot resolve symbol
symbol : class JspTagException
location: class chapter2.HelloTag
throw new JspTagException(e.getMessage());
^
HelloTag.java:28: cannot resolve symbol
symbol : variable SKIP_BODY
location: class chapter2.HelloTag
return SKIP_BODY;
^
HelloTag.java:37: cannot resolve symbol
symbol : variable super
location: class chapter2.HelloTag
super.release();
^
9 errors

Well, it looks like you've not got the servlet development kit JAR on your classpath. I think it'll probably be called servlet.jar on your system. Add that to the classpath if it's not already there.
Incidentally, you've bumped into one of the areas Java's slightly lenient - declaring a method that looks like a constructor:
public HelloTag() { }
public void HelloTag() { }The first is a constructor, the second is a normal method. I'm assuming you intended to have the former instead of the latter.
Anyway, hope this helps.

Missing classes from the javax.swing package?

Can anyone throw any light on what appears to be a missing class from the javax.swing package?
When CelsiusConverter.java from The Swing Tutorial (code fragment shown below) is compiled the JFrame class can't be found.
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class CelsiusConverter implements ActionListener {
JFrame converterFrame;Despite the package javax.swing being imported, the compiler does not seem to be be able to find the JFrame class.
CelsiusConverter.java:14: Class JFrame not found in type declaration.
JFrame converterFrame;To attempt to solve this issue all the files in jdk1.5.0_02\lib were added to CLASSPATH.
CLASSPATH was set to C:\Program Files\Java\jdk1.5.0_02\lib\dt.jar;C:\Program Files\Java\jdk1.5.0_02\lib\htmlconverter.jar;C:\Program Files\Java\jdk1.5.0_02\lib\jconsole.jar;C:\Program Files\Java\jdk1.5.0_02\lib\tools.jar;C:\Program Files\Java\jdk1.5.0_02\lib;C:\Program Files\Java\jdk1.5.0_02\lib\ir.idl;C:\Program Files\Java\jdk1.5.0_02\lib\jawt.lib;C:\Program Files\Java\jdk1.5.0_02\lib\jvm.lib;C:\Program Files\Java\jdk1.5.0_02\lib\orb.idl;C:\Program Files\Java\jdk1.5.0_02\demo\jfc\SwingApplet\SwingApplet.jar;.;c:\CoreJavaBook

This is extremely strange... If you're sure it's not a problem in your code or with your classpath, the only other thing I can think to suggest is re-downloading / installing java

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Hi,
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DFC API calls (3rd party jars)
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Can you show me the output of jar tvf
C:\bea\weblogic81\samples\domains\examples\applications\ejb20_dataLoadMgr.ear
-- Rob
Craig Ahtye wrote:
Hi,
I am having a problem deploying an *.ear into weblogic 8.1. I get the error
J2EE:160043]Missing deployment descriptor "META-INF/application.xml" at "C:\bea\weblogic81\samples\domains\examples\applications\ejb20_dataLoadMgr.ear"
even though the application.xml file is in the *.ear file. This *.ear file is
built using the following
ant script:
Note: I am integrating a Message Driven EJB with Documentum Content Server
DFC API calls (3rd party jars)
Thanks, Craig
<project name="ejb20-message" default="all" basedir=".">
     
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     <property file="../../../examples.properties"/>
     <property name="build.compiler" value="${compiler}"/>
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</project>

Error while compiling java class (ora-29535 source requires recompilation)

Hello. I`m new with oracle and i`m having a problem with java classes. Few days ago i loaded java classes (loadjava) from jar file(biojava3-structure-3.0.2.jar) and compiled ( everything compiled with status valid). Now i`m writing my own class and i can`t import classes from biojava3. I`m getting error:
Projekt:7: cannot access org.biojava.bio.structure.Atom
bad class file: null
class file has wrong version 50.0, should be 49.0
Please remove or make sure it appears in the correct subdirectory of the classpath.
import org.biojava.bio.structure.Atom;
I have tryed to change jdk version in netbeans from 1.7 to 1.6. I created java class in sql plus That still not resolved my problem.
Please help me.

consider posting in Java forum instead of Database forum
https://forums.oracle.com/forums/category.jspa?categoryID=285

Missing class indicator field from database row

Hi,
I have following problem :
There is a class inheritance with root interface and 4 subclasses, they are initialized with class indicator field. If I use ReadAllQuery with an interface or some of concrete class as search class - it is working perfect, but if I try to build query with custom selected fields (addPartialAttribute) I always get an error - Missing class indicator field from database row.
AFAIK This field have not to be mapped in Workbench to real table column, how can I tell TopLink that I will read this indicator field too by reading some custom fields ? I thought TopLink reads such fields automatically, like it does it with primary keys.
Thank you
Maksim

This sounds like an issue with our partial attribute queries and inheritance as the type indicator column must always be read. Can you map the type indicator to a read-only attribute (mark mapping as read-only) and include this in your list of attributes as a work-around?
Doug

Compiling Nested Classes and Interfaces

I am looking for documentation about compiling nested classes and interfaces. I have found something in the JVM Specification, but there does not explain how a nested class is compiled and what is included in the top level class to mark a "place holder" to the nested class. The JVM Specification in this topic cite the web page http://java.sun.com/products/jdk/1.1/docs/guide/innerclasses/spec/innerclasses.doc.html that does not exists any more.
My root problem is that: I am compiling a class with a private nested class, but in the class file generated TopLevelClass$NestedClass.class the class does not have the private modifier. So I am not understanding why the "private" modifier was removed during compilation.
I performed the same test with a protected nested class and the result was the nested class with the public modifier. So I am not understanding why the "protected" modifier was changed to "public".
Thanks in advance,
Mardoqueu.

This should not be happening. What compiler are you using? If it's a reasonably recent Sun compiler, could you post a minimal example?

Missing class: JCA Adapter

Hi!
I tried to insert a record in a database using Database Adapter and BPEL process and i got the next error:
<bindingFault xmlns="http://schemas.oracle.com/bpel/extension"><part
name="code"><code>null</code>
</part><part
name="summary"><summary>file:/opt/oracle/app/oracle/product/soa10.1.3.1/bpel/domains/default/tmp/.bpel_PruebaFlujo_1.2_19fece4afb1609f65136dfc5b9b2a17c.tmp/writeDB.wsdl
[ writeDB_ptt::merge(TrUsuarioCollection) ] - WSIF JCA Execute of
operation 'merge' failed due to: Adapter Framework unable to create
outbound JCA connection.
file:/opt/oracle/app/oracle/product/soa10.1.3.1/bpel/domains/default/tmp/.bpel_PruebaFlujo_1.2_19fece4afb1609f65136dfc5b9b2a17c.tmp/writeDB.wsdl
[ writeDB_ptt::merge(TrUsuarioCollection) ] - : The Adapter Framework
was unable to establish an outbound JCA connection due to the
following issue: ORABPEL-12529
ManagedConnectionFactory problem.
Could not instantiate ManagedConnectionFactory
oracle.tip.adapter.db.DBManagedConnectionFactory due to:
Missing class:
oracle.tip.adapter.db.DBManagedConnectionFactory
Dependent class: oracle.tip.adapter.fw.wsdl.WSDLUtils
Loader: oracle.bpel.common:10.1.3
Code-Source:
/opt/oracle/app/oracle/product/soa10.1.3.1/bpel/lib/orabpel.jar
Configuration: <code-source> in
/opt/oracle/app/oracle/product/soa10.1.3.1/j2ee/home/config/server.xml
This load was initiated at orabpel.root:0.0.0 using the
Class.forName() method.
The missing class is not available from any code-source or loader in
the system.
Please make sure the corresponding JCA Resource Adapter has been deployed.
; nested exception is:
ORABPEL-12511
Adapter Framework unable to create outbound JCA connection.
file:/opt/oracle/app/oracle/product/soa10.1.3.1/bpel/domains/default/tmp/.bpel_PruebaFlujo_1.2_19fece4afb1609f65136dfc5b9b2a17c.tmp/writeDB.wsdl
[ writeDB_ptt::merge(TrUsuarioCollection) ] - : The Adapter Framework
was unable to establish an outbound JCA connection due to the
following issue: ORABPEL-12529
ManagedConnectionFactory problem.
Could not instantiate ManagedConnectionFactory
oracle.tip.adapter.db.DBManagedConnectionFactory due to:
Missing class:
oracle.tip.adapter.db.DBManagedConnectionFactory
Dependent class: oracle.tip.adapter.fw.wsdl.WSDLUtils
Loader: oracle.bpel.common:10.1.3
Code-Source:
/opt/oracle/app/oracle/product/soa10.1.3.1/bpel/lib/orabpel.jar
Configuration: <code-source> in
/opt/oracle/app/oracle/product/soa10.1.3.1/j2ee/home/config/server.xml
This load was initiated at orabpel.root:0.0.0 using the
Class.forName() method.
The missing class is not available from any code-source or loader in
the system.
Please make sure the corresponding JCA Resource Adapter has been deployed.
Please examine the log file for any reasons. Enable DEBUG logging in
the BPEL Console.
</summary>
</part><part name="detail"><detail>null</detail>
</part></bindingFaultAny idea?

Hey
check your connection factories
make sure you have all the required libraries in your classpath
most probably that you are missing some libraried ..
give a try and see what happens ;)

Cannot compile two classes that are on same package

When I compile two classes that are on same package one class that is independent of other class gets compiled but the other class which uses
the first one shows cannot find symbol error with the first class name

try...
javac *.java
that should compile all the java files in that folder at the same time. I dont know if that will fix your problem but it is worth a shot.

Problem compiling - Missing classes???

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