Javadoc ignores first java file in sourcepath

Javadoc 1.4.0 fails with the message "javadoc: No packages or classes specified" if there is only one java source file in the sourcepath. Even if I add more .java files, Javadoc continues to ignore the file whose name comes first alphabetically.
I am running J2SDK 1.4.0 under Windows2000.

The javadoc command which I execute from a DOS prompt in the e:\ root directory is:
javadoc -d e:\ps4component\doc -sourcepath e:\ps4component\src\ps4component\*.java
where my classpath is defined as:
.;d:\j2sdk1.4.0\lib;d:\j2sdk1.4.0\jre\lib
and my directory structure looks like:
e:\
�
�
ps4component\
src\ doc\
�
�
ps4component\
�
�
Component1.java
In this case, Javadoc fails with "javadoc: No packages or classes specified". The file Component1.java is part of the package ps4component.
However, if I add a dummy Java source file whose name comes alphabetically before Component1 to the sourcepath directory, Javadoc correctly produces the Component1.java page but ignores the dummy page. On the other hand, if the dummy filename comes alphabetically after Component1, Javadoc correctly produces the dummy page, but ignores Component1. Javadoc always ignores the first java source file, even in directories containing multiple files.

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Message was edited by:
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How do I import my source file(if it is possible)?
Thanks.

As it stands, if the compiled .class file is in the
same directory as your program, it should run fine
without the import statement. Notice, the import is
failing, but your references to it aren't?It's in the same directory. I took out the import statement and it gave error:
class MouseHandler not found in class appletcode at line ..., column ..
PS: this code is actually from Beginning Java 2 by Wrox. Since mine couldn't work, I downloaded their code. Their code didn't contain the import statement (which should work like you said), but when I compile their code, it gave the same error as above too.
Assuming that code and directory is correct, is there any other possible reasons why this is happening?
Thank you

Replacing Class definition comments in java files.

Hi to all,
Im trying to implement a java file replacer that opens about a thousand java files and replaces the first comment lines. That is to say assume that these thousand java files have this comment at the beginning of them:
*Date Author Changes
*${date} ${author} initial release
My application should find these comments and replace them with
* Project Name:
* File: ${file_name}
* Purpose:
* History:
*Date Author Changes
*${date} ${author} initial release
I dont need any GUI. just I will print the changed files to console.
My question is is there any example applications you guys can suggest and should I use XML and XSL to implement this application?
Any suggestions are highly appriciated.
Best Regards.
Metan

How is XML going to help you? Also for a task which you describe its easier to replace it wholesale rather than compare what is present and what is not. If you want to selectively want to remove stuff you might run into issues where you have to compare the name of the file, and you would not even know if the documentation already existing is the right one if you do not replace.
If at all you wish to go with XML it is better with XSL transforms but I guess that would be an overkill for the purpose.
As previously suggested perl is a very good option, or if you have unix operating system you can even try some basic shell scripting to do your job
Thanks

Java File and JSP Page

I am to create a link verification program -- a simple java file with the database connection & some business logic and a JSP page that instantiates the my java file. It won't work. Everytime I run the jsp page, it gives me java.lang.NullPointerException. Can anyone give me some directions? The web server I am using is JRun.
Thank you
Below are my code:
JSP Page:
<%--      Verify Links
--%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<%@ page import="java.sql.*" %>
<%@ page import="java.net.*" %>
<%@ page import="pro.*" %>
<html>
<head>
<title>Results</title>
</head>
<body>
<%
try{
LinkConnection newconn = new LinkConnection();
newconn.initialize();
newconn.query();
newconn.close();
}catch (ClassNotFoundException cnfe)
out.println(cnfe);
catch (SQLException sqle)
out.println(sqle);
catch (NullPointerException npe)
out.println(npe);
%>
</body>
</html>
Java Code:
package pro;
import java.io.*;
import java.sql.*;
import java.net.*;
public class LinkConnection {
Connection con;
ResultSet RS;
Statement Stmt;
public void initialize() throws SQLException, ClassNotFoundException
Class.forName("oracle.jdbc.driver.OracleDriver");
con = DriverManager.getConnection("XXXX", "XXXX", "XXXX");
public void query() throws SQLException
Statement Stmt=con.createStatement();
String strSQL="Select guideline_name, guideline_url from pgt_guidelines";
ResultSet RS=Stmt.executeQuery(strSQL);
while (RS.next())
String guidelinename = RS.getString("guideline_name");
String guidelineurl = ("http://" + RS.getString("guideline_url"));
try {
URL url = new URL(guidelineurl);
HttpURLConnection link=(HttpURLConnection)url.openConnection();
System.out.println("<font color='blue'>");
System.out.println(guidelinename);
System.out.println("<br>");
System.out.println(guidelineurl);
System.out.println("</font>");
System.out.println("<font color='red'>");
System.out.println(link.getResponseCode());
System.out.println("</font>");
System.out.println("<br />");
          }catch (Exception e)
          {System.out.println("<font color='yellow'>Error Link </font>")
public void close() throws SQLException {
RS.close();
Stmt.close();
con.close();

i'm having the same problem, what is the solution to this
A Servlet Exception Has Occurred
java.lang.NullPointerException
     at test.Lesson.runSql(Lesson.java:80)
===== Lesson.java file =====
package test;
import java.sql.* ;
import java.io.Serializable;
public class Lesson {
     public Lesson( ) { }
//Line 9
     public String runSql ( ) {
          String browserOutput = "";
          Connection sqlca = null;
          Statement sqlStatement = null;
          ResultSet myResultSet = null;
//Line 16
          /* Connect to database, run SQL and produce output */
          try {
               /* Connection to the database */
               Class.forName("org.gjt.mm.mysql.Driver").newInstance();
               String theDatabase ="jdbc:mysql://localhost/employee";
               sqlca = DriverManager.getConnection(theDatabase,"usr","pwd");
//Line 24
               /* Construct and execute the sql, positioning before the
               first row in the result set */
               sqlStatement = sqlca.createStatement();
               myResultSet = sqlStatement.executeQuery
//Line 29
               ("select emp_id, " +
                    "emp_lname, " +
                    "city, " +
                    "state," +
                    "zip_code, " +
                    "emp_fname " +
                    "from employee " +
                    "where emp_id < 250 " +
                    "order by emp_lname, emp_fname");
//Line 39
               /* Construct the heading for the table */
               browserOutput =
                    "<div align=left>"+
                    "<table border=0 align=left width=520>" +
                    "<caption><i><b>" +
                    "Employee Listing</b></i></caption>" ;
//Line 46
               /* Construct the column headings for the table */
               browserOutput +=
                    "<th align=left>Emp_id</th>" +
                    "<th>First Name</th>" +
                    "<th>Last Name</th>" +
                    "<th>City</th>" +
                    "<th>State</th>" +
                    "<th>Zip</th>" ;
//Line 55
               /* Move to next row and & its contents to the html output */
               while(myResultSet.next()) {
                    browserOutput += "<TR><TD>" +
               myResultSet.getObject("emp_id").toString() + "</TD><TD>" +
               myResultSet.getObject("emp_fname").toString()+"</TD><TD>" +
               myResultSet.getObject("emp_lname").toString() + "</TD><TD>" +
               myResultSet.getObject("city").toString() + "</TD><TD>" +
               myResultSet.getObject("state").toString() + "</TD><TD>" +
               myResultSet.getObject("zip_code").toString() + "</TD></TR>" ;
//Line 66
               }//end of while
               sqlStatement.close();
               sqlca.close();
          }//end of try
          catch (SQLException e) {
//Line 72
               browserOutput = " Error: SQLException: " + e.getMessage();
               browserOutput= " Error: SQLState: " + e.getSQLState();
               browserOutput= " VendorError: " + e.getErrorCode();
          }//end of SQLException
          catch (Exception e) {
               browserOutput = " Error: JDBC Class creation: " + e.getMessage();
          }//end of Exception
/**Line 80**/     finally {
               try { sqlca.close(); }
               catch(SQLException e) {
               browserOutput = " Error: Closing connection: " + e.getMessage();
          }//end of finally
     /* Complete the html and return it to the Java Server Page */
     browserOutput += "</table>" + "</div>" ;
     return browserOutput;
     } //end of runSql
}//end of Lesson

.java files located in different directories - trouble compiling

My attempts at getting my main .class file (../master/BicycleMaster.class) to automatically recognize that it's supporting .class file (../master/child/BicycleChild.class) located one directory below keep failing and the .java files won't compile.
If I move both .java files to the same location (in the ../master directory) then they compile and run just fine, but it's when I want to separate them into the two different directories that I have a problem compiling them. They won't compile because the references in BicycleMaster.jave to BicycleChild.java can't be resolved.
I was hoping - if you have time - that you might be able to show me by example in the code below? In the file ../master/BicycleMaster.java I added 'package master;' as the first line of the code. It was my impression that this would tell the compiler to look in the sub-directories for any additional .java files. This didn't work either.
HERE ARE THE DETAILS:
Directory of K:\COMMON\ITS\STEVEB\java\master
03/04/2008 04:25 PM <DIR> .
03/04/2008 04:25 PM <DIR> ..
03/04/2008 04:24 PM 612 BicycleMaster.java
03/04/2008 03:54 PM <DIR> child
1 File(s) 612 bytes
K:\COMMON\ITS\STEVEB\java\master>type BicycleMaster.java
package master;
class BicycleMaster {
    public static void main(String[] args) {
        //Create 2 different bicycle objects
        BicycleChild bike1 = new BicycleChild();
        BicycleChild bike2 = new BicycleChild();
        //Invoke methods on the objects
        bike1.changeCadence(50);
        bike1.speedUp(10);
        bike1.changeGear(2);
        bike1.printStates();
        bike2.changeCadence(50);
        bike2.speedUp(10);
        bike2.changeGear(2);
        bike2.changeCadence(40);
        bike2.speedUp(10);
        bike2.changeGear(3);
        bike2.printStates();
}Directory of K:\COMMON\ITS\STEVEB\java\master\child
03/04/2008 03:54 PM <DIR> .
03/04/2008 03:54 PM <DIR> ..
03/04/2008 03:54 PM 524 BicycleChild.java
1 File(s) 524 bytes
K:\COMMON\ITS\STEVEB\java\master\child>type BicycleChild.java
class BicycleChild {
    int cadence = 0;
    int speed = 0;
    int gear = 1;
    void changeCadence(int NewValue) {
        cadence = NewValue;
    void changeGear(int NewValue) {
        gear = NewValue;
    void speedUp(int increment) {
        speed = speed + increment;
    void applyBrakes(int decrement) {
        speed = speed - decrement;
    void printStates() {
        System.out.println("Your cadence: "+cadence+", Your speed: "+speed+", Your gear: "+gear);
}HERE ARE THE ERRORS:
First I compile the ../master/child/BicycleChild.java file and it compiles fine. This I attempt to compile ../master/BicycleMaster.java and I get the following errors:
K:\COMMON\ITS\STEVEB\java\master>javac BicycleMaster.java
BicycleMaster.java:5: cannot find symbol
symbol : class BicycleChild
location: class master.BicycleMaster
BicycleChild bike1 = new BicycleChild();
^
BicycleMaster.java:5: cannot find symbol
symbol : class BicycleChild
location: class master.BicycleMaster
BicycleChild bike1 = new BicycleChild();
^
BicycleMaster.java:6: cannot find symbol
symbol : class BicycleChild
location: class master.BicycleMaster
BicycleChild bike2 = new BicycleChild();
^
BicycleMaster.java:6: cannot find symbol
symbol : class BicycleChild
location: class master.BicycleMaster
BicycleChild bike2 = new BicycleChild();
^
4 errors

Thanks so much for responding. Progress was definetly made as the compiler now works longer before erroring out. Sadly it's still erroring out for a reason I'm not understanding. Please let me know if you can see where I'm going wrong.
Here's how it played out for me:
K:\COMMON\ITS\STEVEB\java>echo %classpath%
.;k:\common\its\steveb\java\;C:\Program Files\Java\jre1.6.0_04\lib\ext\QTJava.zip
K:\COMMON\ITS\STEVEB\java\master\child>javac BicycleChild.java
K:\COMMON\ITS\STEVEB\java\master\child>cd ..
K:\COMMON\ITS\STEVEB\java\master>javac BicycleMaster.java
BicycleMaster.java:5: cannot find symbol
symbol : class BicycleChild
location: class master.BicycleMaster
BicycleChild bike1 = new BicycleChild();
^
BicycleMaster.java:5: cannot find symbol
symbol : class BicycleChild
location: class master.BicycleMaster
BicycleChild bike1 = new BicycleChild();
^
BicycleMaster.java:6: cannot find symbol
symbol : class BicycleChild
location: class master.BicycleMaster
BicycleChild bike2 = new BicycleChild();
^
BicycleMaster.java:6: cannot find symbol
symbol : class BicycleChild
location: class master.BicycleMaster
BicycleChild bike2 = new BicycleChild();
^
4 errors
Here are the two programs revised as you suggested:
K:\COMMON\ITS\STEVEB\java\master\child>type BicycleChild.java
package master.child;
class BicycleChild {
    int cadence = 0;
    int speed = 0;
    int gear = 1;
    void changeCadence(int NewValue) {
        cadence = NewValue;
    void changeGear(int NewValue) {
        gear = NewValue;
    void speedUp(int increment) {
        speed = speed + increment;
    void applyBrakes(int decrement) {
        speed = speed - decrement;
    void printStates() {
        System.out.println("Your cadence: "+cadence+", Your speed: "+speed+", Your gear: "+gear);
}K:\COMMON\ITS\STEVEB\java\master>type BicycleMaster.java
package master;
class BicycleMaster {
    public static void main(String[] args) {
        //Create 2 different bicycle objects
        BicycleChild bike1 = new BicycleChild();
        BicycleChild bike2 = new BicycleChild();
        //Invoke methods on the objects
        bike1.changeCadence(50);
        bike1.speedUp(10);
        bike1.changeGear(2);
        bike1.printStates();
        bike2.changeCadence(50);
        bike2.speedUp(10);
        bike2.changeGear(2);
        bike2.changeCadence(40);
        bike2.speedUp(10);
        bike2.changeGear(3);
        bike2.printStates();
}

Problem in compiling a java file

hello...
i placed all my java file in the folder C:\nmt
and i run the following command to compile it...
javac -sourcepath C:\nmt testabc.java
now it showing an error..
cannot read testabc.java
javac -sourcepath C:\nmt -d C:\nmt testabc.java
to produce the output in the C:\nmt folder but it shows the same message...pls tell what worng here??
sam

You don't have a testabc.java file in the directory.

Javadoc ignores first java file in sourcepath

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