Creating class files

javac.exe is not creating class file.My os is win2000 and system 1s PIV

Actually my pbroblem is javac is not at all creating class file
iconfirmed it by searchig.
even i am not getting the options of javac after typing 'javac'
at the command prompt without giving any file name after the command
'javac'

Similar Messages

Error when trying to create class file

I am getting this error when I try to create file
clobsearch.java:246: not a statement ex;
protected Element getDocumentRoot(Clob c)
Element root;
Reader read = c.getCharacterStream();
String s = convertClob(read, 8192);
SAXReader sread = new SAXReader("org.dom4j.io.aelfred.SAXDriver");
sread.setMergeAdjacentText(true);
sread.setStripWhitespaceText(true);
Document doc = sread.read(new StringReader(s));
root = doc.getRootElement();
return root;
Exception ex;
ex; <--- this is line 246
System.out.println(ex.getMessage());
return null;
any help would be appricated
thanks
robert

The guy who wrote this code is no longer with the company
the server IP got changed and he had an IP coded in the program
i managed to uncompile the code
i changed the IP to the new one
when I tryed to create the class file i get the error
so as far as what is happenning with the ex I am not sure
here is another piece of code that might help
really all i need to do is get the class file created again...
protected Element getDocumentRoot(Clob c)
Element root;
Reader read = c.getCharacterStream();
String s = convertClob(read, 8192);
SAXReader sread = new SAXReader("org.dom4j.io.aelfred.SAXDriver");
sread.setMergeAdjacentText(true);
sread.setStripWhitespaceText(true);
Document doc = sread.read(new StringReader(s));
root = doc.getRootElement();
return root;
Exception ex;
ex;
System.out.println(ex.getMessage());
return null;
protected double toDouble(String s)
double d = 0.0D;
try
d = Double.parseDouble(s);
catch(NumberFormatException ne) { }
return d;
protected String convertClob(Reader in, int blen)
StringWriter sw = new StringWriter(32768);
char buf[] = new char[blen];
int len = 0;
try
while((len = in.read(buf)) != -1)
sw.write(buf, 0, len);
in.close();
sw.close();
catch(IOException ioe)
len = 1;
return null;
String s = sw.toString();
int q = s.indexOf("<Quote");
int end = 0;
if(q == 0)
end = s.indexOf("</Quote>") + 8;
} else
q = s.indexOf("<Project");
if(q == 0)
end = s.indexOf("</Project>") + 10;
else
end = s.indexOf("</Order>") + 8;
return s.substring(0, end);
public static void main(String args[])
if(args.length < 2)
System.out.println("Usage: clobsearch tablename [searchpattern] [datesql]");
System.out.println("Where: searchpattern like \"Geodesic Dome\" and datesql like \" where quotedate >= to_date('01/01/2004', 'MM/DD/YYYY')\"");
System.out.println("OR: clobsearch tablename searchpattern -data idfile [idcolname]");
System.out.println("Where: searchpattern as above, idfile is a one per line file of quote or order numbers, idcol=column name for id col");
System.exit(1);
clobsearch cs = new clobsearch(args);
}

Se development kit (jdk 6) problem creating class file with HelloWorldApp

I downloaded the java SE Development kit (JDK 6) with Java FX SDK and used the download manager from Java web site, the program downloaded the
jdk-6u13-javafx-1_1_1-windows-i586 icon to my desktop and the java program to
C\Program Files\Java\jdk1.6.0_13
     Jre1.5.0_05
     Jre1.6.0_03
     Jre6
I then created a Java source file which was HelloWorldApp.java. and typed in the Hello World Code as requested I saved it to
C\Documents and Settings\Compaq_owner\Java.
Then I try to compile my source file into a .class file and get stuck as I am told to open a command window which I do through, start\allprograms\accessories\command promt.
My command window says C:\Documents and Setting\Compaq_Owner>
I am told to compile my source file and I must change my directory in the command window to the directory where my file is located.
I type after the existing promt, cd C:\java and also tried, cd C:\Documents and Settings\Compaq_Owner\Java\HelloWorldApp. And was told both times the system cannot find the path specified
I typed dir after the promt and can see the java directory there in the list, but have I placed my HelloWorldApp File in the wrong place what is wrong please help I cannot get off the ground
Kind regards pete

petefizz wrote:
I then created a Java source file which was HelloWorldApp.java. and typed in the Hello World Code as requested I saved it to
C\Documents and Settings\Compaq_owner\Java.Then the full path to your HelloWorldApp.java file is: C\Documents and Settings\Compaq_owner\Java\HelloWorldApp.java.
Then I try to compile my source file into a .class file and get stuck as I am told to open a command window which I do through, start\allprograms\accessories\command promt.
My command window says C:\Documents and Setting\Compaq_Owner>
I am told to compile my source file and I must change my directory in the command window to the directory where my file is located. You file is located in the directory, C\Documents and Settings\Compaq_owner\Java
I type after the existing promt, cd C:\java and also tried, cd C:\Documents and Settings\Compaq_Owner\Java\HelloWorldApp. And was told both times the system cannot find the path specifiedcd stands for Change Directory. You want to change to the directory where your .java file is. You can not use a path that ends in a file because a file is not a directory.
You may need to put C\Documents and Settings\Compaq_owner\Java inside double quotes, "C\Documents and Settings\Compaq_owner\Java" I think newer versions of Windows will not require the double quotes.

Java not creating .class file ?

I copied and pasted text into textpad then saved textpad creats the java file but no class file ! What gives ? I tried rebooting , the class name is the same (not mispelled) even did a HD search for class file and its no where to be found

You have to compile a Java source file into a class file.
http://java.sun.com/docs/books/tutorial/getStarted/cupojava/win32.html

Struts ,can i create .class file

i am created actionform java file can i create .class for that or directly can i place it anywhere .sir plese help me on struts .how can i deploy my application in tomcat .

You are not very specific in your question. You are rquesting for help in Struts and you are also saying that you need help in Tomcat! What is it that you really want? When you load, run or use any application, its always the .class files that are picked up by the server.
Please be more clear on what you want.
Vijay

Included #sql context DB1Ctx; did not create .class file

Hello,
Request explanations on why this does not create a
SQLJTst3.class file? I type in sqlj SQLJTst3.sqlj
This creates the SQLJTst3.java and the .ser profile files but
no .class file.
My set-up is:
Oracle SQLJ Release 8.1.7.0.0 Production
Build version: 2.0.0.0 - Built on May 31, 2000
IDE interface version: 8.1.7.0.0/2.0.0.0
JDBC version: Oracle JDBC driver version 8.1 (8.1.7.0.0)
SQLJ runtime: Oracle 8.1.7 for JDBC 8.1.7 or later/JDK 12EE -
Built on Aug 18, 2000
Java version: 1.3 (1.3.0)
import sqlj.runtime.*;
import sqlj.runtime.ref.*;
import java.sql.*;
import sqlj.runtime.ref.DefaultContext;
#sql context DB1Ctx; // Define connection context
#sql context DB2Ctx;
public class SQLJTst3 {
public static void main(String[] args) {
Connection c = null;
String URL = "jdbc:oracle:thin:@gnj:1521:oralin";
String userid = "scott";
String passwd = "tiger";
try {
DriverManager.registerDriver(new
Oracle.jdbc.driver.OracleDriver() );
// Connect to multiple databases
DB1Ctx dB1 = new DB1Ctx(DriverManager.getConnection(URL,
userid, passwd));
DB2Ctx dB2 = new DB1Ctx(DriverManager.getConnection(URL,
userid, passwd));
// Select a row from database DB1
String dBuser1;
#sql [dB1] { select user into :dBuser1 from dual };
System.out.println("Database username is " + dBuser1);
// Select a row from database DB2
String dBuser2;
#sql [dB2] { select user into :dBuser2 from dual };
System.out.println("Database username is " + dBuser2);
// Close the database connection
#sql { rollback work };
c.close();
System.out.println("Disconected...");
} catch (SQLException e) {
e.printStackTrace();
YET this one creates all the files and I can then java SQLJTst2.
import sqlj.runtime.*;
import sqlj.runtime.ref.*;
import java.sql.*;
// Iterators must be delared on top - sqlj will create classes
for them
#sql iterator TabIter (String, String);
public class SQLJTst2 {
public static void main(String[] args) {
Connection c = null;
String URL = "jdbc:oracle:thin:@gnj:1521:oralin";
String userid = "scott";
String passwd = "tiger";
try {
DriverManager.registerDriver(new
oracle.jdbc.driver.OracleDriver());
c = DriverManager.getConnection(URL, userid, passwd);
System.out.println("Successfully conencted to Oracle...");
// You need to set a Context for SQLJ, otherwise -
// SQLException: found null connection context
DefaultContext.setDefaultContext( new DefaultContext(c));
// Fetch multiple values
TabIter tabIter;
#sql tabIter = { select tname, tabtype from tab };
while (true) {
String dBTabName = null;
String dBTabType = null;
#sql { fetch :tabIter into :dBTabName, :dBTabType };
if ( tabIter.endFetch() ) break;
System.out.println("Name: " + dBTabType + "." +
dBTabName);
// Close the database connection
#sql { commit work };
#sql { rollback work };
c.close();
System.out.println("1..2..3..Disconected...");
} catch (SQLException e) {
e.printStackTrace();

Disgregard previous posting...I found the typo. It does create
the .class files now.
However the problem im getting this time is
Database username is SCOTT
Database username is SCOTT
java.sql.SQLException: found null connection context
at sqlj.runtime.error.Errors.raiseError(Errors.java:118)
at sqlj.runtime.error.Errors.raiseError(Errors.java:60)
at
sqlj.runtime.error.RuntimeRefErrors.raise_NULL_CONN_CTX(RuntimeRe
fErr
ors.java:118)
at SQLJTst3.main(SQLJTst3.java:297)
It does not like two sessions from same user?

Unable to compile ( not creating class file ) java file

Hi
I am unable to compile java file in eclipse. I am using Tomcat 5.0 and eclipse 3.0. I am able to compile the file from command prompt. I installed eclipse and did all settings including Build path ( WEB-INF\classes). But I donot see any class file getting created.

Are you seeing errors when eclipse compiles you classes? Have you tried to build your project using; Project -> Build All? If you have and it looks like no errors are generated you may need to change your perspective. Try changing to the resource perspective to see the built class files; Window -> Open Perspective -> Other -> Resource. By default built class files end up in the bin directory of the project. i usually change my built classes directory to classes, just makes more sense to me.

Creating class file to pare displayName

Hi, I'm obviously not a programmer but need to cut down a returned LDAP attribute, displayName. Currently it is last, first (company division). I'd like to cut off (company division)
I already have something like this.public class StLdapCustomizedAttributes
public static String displayName (String givenName, String sn)
String result = sn + ", " + givenName;
return result;
} can I do something like:
(String displayName)
String result = displayName - "() " ;
return result;
???? Sorry it's not cool!

No, that won't work.
The String class has a method named indexOf. Use can use that method and look for '('. Then use substring to only get the chacaters between the start of the string, and that character.
Kaj

Converting a class file to a dll

Hai please help me..
I am trying to convert my .class file to a .dll file.
This is my java code:
public class DateFunctions {
     public int getTimeInSeconds(int i){
          return i;
     public int addNumbers(int i, int j) {
          return (i+j);
     public static void main(String[] args) {
          DateFunctions df=new DateFunctions();
          df.getTimeInSeconds(
Created class file DateFunctions.class.
Created jar DateFunctions.jar using:
jar cvf DateFunctions.jar DateFunctions.class
Generated dll file using bimp tool like this (Visual J# .NET tool):
jbimp DateFunctions.jar /t:library
I got the file: DateFunctions.dll
Now loaded this dll into my code (say, TSL code in WinRunner) using load_dll("DateFunctions.dll");
When I try to access the method like:
j=getTimeInSeconds(int i);
I am getting the error RPC error.
Note: DLL is loading fine. but while accessing the functions I am getting the RPC error..
What could be the reason..?
Please help...?
Thanks,
Satish

Your answer lies in the documentation for WinRunner and whatever else is calling the DLL.
Certainly Java JNI has requirements for DLLs called from Java: They have to be C++ bindings that use the native header that Java generates, right?
So now you need to look at the requirements for your WinRunner and make sure that the program translating your .class file to a DLL does it in a such a way that the bindings WinRunner expects are indeed there.
But none of that has anything to do with Java. If your Java class compiles and tests successfully, then your questions about Java are satisfied. You have to figure out what WinRunner needs and what's missing from what you supplied.
%

Javah error: could not find class file for 'com.ntv.ndkjni'

Hi,
My project directory : C:\ndkJNI
My java file directory : C:\ndkJNI\src\com\ntv\ndkjni
My package name    : com.ntv.ndkjni
1 ) I entry command prompt at C:\ndkJNI\src\com\ntv\ndkjni
2 ) Javac test.java and create test.class succesfully. test.class is in C:\ndkJNI\src\com\ntv\ndkjni folder.
3 ) Later I used Javah, try below javah variously
     a) javah -classpath C:\ndkJNI\src\com\ntv\ndkjni test
     b) javah -classpath C:\ndkJNI\src\com\ntv\ndkjni.test
     x) javah -classpath C:\ndkJNI\src\com\ntv\ndkjni com.ntv.ndkjni.test
     y) javah -classpath C:\ndkJNI\src\com\ntv\ndkjni com.ntv.ndkjni test
     c) javah -classpath C:\ndkJNI\src\com\ntv\ndkjni com.ntv.ndkjni.test
     d) javah com.ntv.ndkjni.test
     e) javah com.ntv.ndkjni test
     f) javah com.ntv.ndkjni test.class-> (error: exception in a thread illegal argument exception)
I am searching for 5 day. I couldnt find solution. I try different computer. I tried ubuntu and win8, the error still with me.
Thats interesting when I delete the package com.ntv.ndkjni; from java file, then create class file again with javac then javah can create header file succesfully.
Please help me.
*****************************test.java**************************
package com.ntv.ndkjni;
public class test {
static
System.loadLibrary("hello");
    public static native int toplama(int sayi1,int sayi2);

javah takes a fully qualified class name so in your case that would be
com.ntv.ndkjni.test
As with all things related to java the class path is used to resolve the class based on the fully qualified name. The name resolves STARTING at the path and then attempts to find the class BELOW the classpath by resolving the name.
Because of that your class path should be the following
C:\ndkJNI\src

J2EE .class file compiling for jar, ear files.

I know that using the former Sun/present Oracle .class java source code compiler,
I create a platform independet class file which can be used by the java language
on any OS environment with the appropriate Java Runtime Environment installed.
I know that there are obfuscation tools available to prevent the .class file decompilation
related issues.
I have also been using the GNU gcj compiler with great success. However,
I havn't been able to find a non-commercial purchase compiler that can create
.class files, with the same platform independence, but that can't be easily decompiled
based on the simple content in .class files. Can someone point me to someone on the net
for a free for commercial development java compiler, past about 1.5.X ?

If it were possible, don't you think Oracle would have built the compiler like that themselves?

How to create and exe from a class file.

I want to create an application and want to distribute it. I am using simplw awt gui interface. I have compiled the program and have got the required class file. If I want an executable how can I go for it.
There are many files provided by java library which are exe but are created using java API eg. policytool.exe. Please Help.
Ashwini Bagga,
Jaipur(Rajasthan)
INDIA.

Java uses the JVM to parse the class files. It cannot be converted to a .exe file
but if you want to distribute it, i suggest you use InstallAnywhere which makes it into an exe installer.
In the end it still uses the virtual machine...
If i am wrong anywhere pls correct me thanks...

Trying to access methods from a .class file by creating instance of class

Hey all,
I'm hoping you can help. I've been given a file "Input.class" with methods such as readInt(), readString(), etc. I have tried creating instances of this class to make use of it, but I receive the error "cannot find symbol : class Input".
If you could help at all, I would greatly appreciate it.
Here's my code. The first is the base program, the second is the driver.
import java.util.*;
public class CarObject
     private String makeType = "";
     private String modelType = "";
     private int yearOfRelease = 0;
     private double numOfMiles = 0.0;
     public void setFilmTitle(String make)
          makeType = make;
     public void setMediaType(String model)
          modelType = model;
     public void setYearOfRelease(int year)
          yearOfRelease = year;
     public void setNumOfMiles(double miles)
          numOfMiles = miles;
     public String getMakeType()
          return makeType;
     public String getModelType()
          return modelType;
     public int getYearOfRelease()
          return yearOfRelease;
     public double getNumOfMiles()
          return numOfMiles;
The program is used by a rental car company and the object takes on desired attributes.
import java.util.*;
public class TestCarObject
     static Scanner keyboard = new Scanner(System.in);
     public static void main(String[] args)
          System.out.println("Please answer the following questions regarding your rental car order.");
          Input carinput = new Input();
          String makeType = carinput.readString("Enter your desired make of car: ");
          String modelType = carinput.readString("Enter your desired model of car: ");
          int yearOfRelease = carinput.readInt("Enter the oldest acceptable year of release to rent: ");
          double numOfMiles = carinput.readDouble("Enter the highest acceptable number of miles: ");
          System.out.println("Make: " + makeType);
          System.out.println("Model: " + makeType);
          System.out.println("Year: " + makeType);
          System.out.println("Mileage: " + makeType);
}

No, I don't know the package name....Is there a way
to import the Input.class by itself without importing
the entire packge?
I tried extending the driver program too...It didn't
work either...
Message was edited by:
BoxMan56How do you know you have a class called Input.class ?
You got a jar file which contains it ? or just a simple .class file ?
You have to set the classpath in either case.
But for the former, you should also need to explicitly telling which package containing the class file you looking for (i.e. Input.class)
e.g. java.util.Vector which is a class called Vector inside java.util package.
You don't have to import the whole package, but you should tell which package this class belongs to.

Can't create a .class file

Hello
I am glade to know this forum, I bet it is muche better than my instructor, any how ..
I am trying to do my first java program, the progam is working properly on netbeans 4.1 with jdk1.5.0, but when I go to the command prompt on windows XP it dose not work,
other programs work in the command prompt but mine dose not
what is good is that I know the problem, it is that I don't have the .class file I have the .java, and as I read it was supposed to be created automatically on neatbeans but unfortunatly it is not. can I creat it somehow ??!!
any sugestions ??

I did a google search and found this thread.
Just to keep information at finger tips etc.
I installed the recent JDK from JavaSun place for Windows (XP).
I could not compile a class file from a java file in Netbeans.
To compile a class file from a java file I needed to use javac.
Using cmd prompt (Command prompt) I could not use Javac (I forgot about PATH vars).
Right click my computer, properties in menu, advanced tab, Environment variables, Edit the path variable, add the directory c:\proram files\java\jdk????\bin\ (??? being the version of your jdk), then run cmd then javac works! (remembering of course to have ; seperator!)
ADDTIONAL INFO:
Should I set the PATH variable?
Set the PATH variable if you want to be able to conveniently run the JDK executables (javac.exe, java.exe, javadoc.exe, etc.) from any directory without having to type the full path of the command. If you don't set the PATH variable, you need to specify the full path to the executable every time you run it, such as:
C:> "\Program Files\Java\jdk1.6.0_<version>\bin\javac" MyClass.java
It's useful to set the PATH permanently so it will persist after rebooting.
How do I set the PATH permanently?
To set the PATH permanently, add the full path of the jdk1.6.0_<version>\bin directory to the PATH variable. Typically this full path looks something like C:\Program Files\Java\jdk1.6.0_<version>\bin. Set the PATH as follows, according to whether you are on Microsoft Windows NT or 98/2000/ME.
Message was edited by:
g000we

How to create a exe file of a .class file

how to create a .exe file for windows .class file of java
please answer this so that i can complete the project to be submited to collage

There is a program called JET. Is enables you to create .exe files of .class files.
This is the URL:
http://www.excelsior-usa.com/jet.html
Succes
--=tReShR=--

Creating class files

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