SomeJavaClass class can store in somejavaclass.java file? case sensitive?

I have project in which class names don't coincide with file names absolutely. Difference is in case sensitivity, like Test1 class stores in test1.java file. Is it possible? Maybe it is possible in some OS? How to build the project?

Do yourself a favour and do the right thing. Get the filenames correct. Why look for trouble?

Similar Messages

Help please - Updating .jar file and can't compile decompiled .java files.

Ok, so there is a game on the internet called 'runescape', its a java applet that runs in the web browser from a cache in the windows directory.
Basically im trying to edit this client so that i can run it away from their website (for use on a private server).
The problem i am getting is that when i decompile the class files from the .jar into the .java files i can't recompile the .java files.
E.G. I decompiled one of the .class files and tried to re-compile it agian straight away which brought me errors, i did this to rule out my editing as the problem.
The jar file can be found [here.|http://world80.runescape.com/loader_gl397188536.jar] but the link will no double be dead after a few weeks.
Can somebody please take a look and help me? I'm fairly new to java programming so if you could keep your answers as simple as possible that would be great, thanks.
Ps. If this is the wrong section im sorry, i couldn't find the right section and this section seemed closest for me.

i'm compiling using the javac command in a batch file, its displaying 100 errors but there are more, it seems to be showing that the syntax is incorrect as it is labeling brackets as being in the incorrect places.
Decompiling error?
As for being allowed to do this, im not so sure the company would approve but im only doing this for learning purposes and will not be releasing any of it upon the internet.

Where can i see the java file of a container converted JSP file

I am using weblogic11g.
Where can i see the java file of a container converted JSP file .

Hello.
If you look for .class files, you will find them under $domain/servers/serverName/tmp/application/etc.
If you look after .java translated files, nowhere if you don't have "keepgenerated" param set to true in the appc/jspc command line (may be set in a web descriptor but can't find a reference). The foo.java will be find in .\WEB-INF\classes\jspservlet.
Edit: http://download.oracle.com/docs/cd/E12840_01/wls/docs103/webapp/weblogic_xml.html
Regards.
Aurélien.
Edited by: Aurelien DEHAY on 24 août 2009 17:12

Using java class and variables declared in java file in jsp

hi everyone
i m trying to seperate business logic form web layer. i don't know i am doing in a right way or not.
i wanted to access my own java class and its variables in jsp.
for this i created java file like this
package ris;
import java.sql.*;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
public class NewClass{
    public static void main(String args[]){
        Connection con = null;
        ResultSet rs=null;
        Statement smt=null;
        try{
            Class.forName("com.mysql.jdbc.Driver").newInstance();
            con=DriverManager.getConnection("jdbc:mysql:///net","root", "anthony111");
            smt=con.createStatement();
           rs= smt.executeQuery("SELECT * FROM emp");
           while(rs.next()){
            String str = rs.getString("Name");
            }catch( Exception e){
                String msg="Exception:"+e.getMessage();
            }finally {
      try {
        if(con != null)
          con.close();
      } catch(SQLException e) {}
}next i created a jsp where i want to access String str defined in java class above.
<%--
    Document   : fisrt
    Created on : Jul 25, 2009, 3:00:38 PM
    Author     : REiSHI
--%>
<%@page import="ris.NewClass"%>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
   "http://www.w3.org/TR/html4/loose.dtd">
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>JSP Page</title>
    </head>
    <body>
        <h1><%=str%></h1>
    </body>
</html>I wanted to print the name field extracted from database by ResultSet.
but it gives error cannot find symbol str.
please help me to find right way to do this.
i am using netbeans ide.

Very bad approach
1) Think if your table contains more than one NAMEs then you will get only the last one with your code.
2) Your String is declared as local variable in the method.
3) You have not created any object of NewClass nor called the method in JSP page. Then who will call the method to run sql?
4) Your NewClass contains main method which will not work in web application, it's not standalone desktop application so remove main.
Better create an ArrayList and then call the method of NewClass and then store the data into ArrayList and return the ArrayList.
It should look like
{code:java}
package ris;
import java.sql.*;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
public class NewClass{
    public static ArrayList getNames(){
        Connection con = null;
        ResultSet rs=null;
        Statement smt=null;
        ArrayList nameList = new ArrayList();
        try{
            Class.forName("com.mysql.jdbc.Driver").newInstance();
            con=DriverManager.getConnection("jdbc:mysql:///net","root", "anthony111");
            smt=con.createStatement();
           rs= smt.executeQuery("SELECT * FROM emp");
           while(rs.next()){
            nameList.add(rs.getString("Name"));
           return nameList;
            }catch( Exception e){
                String msg="Exception:"+e.getMessage();
               </code><code class="jive-code jive-java"><font>return nameList;</code><code class="jive-code jive-java">
            }finally {
      try {
        if(con != null)
          con.close();
      } catch(SQLException e) {}
      </code><code>return nameList;</code>
<code class="jive-code jive-java">    }

How can I get controller .java files

I have craeted OA extension pages in which I have created Entiy object, module and view objects
in JDeveloper for 12.1.1 in windows and it working fine.
Now I want to extend one of the page of payable module (payable vision operation (USA))
and the page name is SuppSummaryPG.xml .
The problem is that how can I open or import SuppSummaryPG.xml in my jdeveloper ID
and all the related files which belongs to SuppSummaryPG.xml , example raleated VO, entity objects
module file and controller servlet.
I move all the files from
apps server to jdeveloper directory , i did the same thing which is running
and working fine but the problem is with all of ViewObject and aplication module
I am not able to open these in Jdeveloper , because when I try to open these files
it gives me error that you dont have .java files , and it opens view objects and applicatino
moudel files in read only mode
the page is a standrad java moudle page
suppSummaryPG is a standard page and it is in
payable moudle herachy is
oracle/apps/pos/supplier/....suppSummaryPG
what should I do

You can use decompiler to read java code. Oracle doesn't have any policy to prevent you from reading the class files.
However you cannot change the java code and replace the standard files.
Source Code:
Oracle sells the just the software. So they are not obligated to provide source code.
The reason why they provided soruce code for forms and reports is that there is no robust personalzation and extention concepts available for them.
As per Oracle Support services, you dont need OAF code for extension and personalization.
--Prasanna

Javac error: Can't read my .java-file

Hi,
sorry for my stupid question, but I have problems compiling my java code.
Before, I used NetBeans to compile the code and I had no problems with it. Now I have to use the javac command (with the same *.java-files) and it does not work.
It's running on Linux. In my current working directory, I have the file
image/transfer/smallserver/RequestProcessor.java
So I type
javac image.transfer.smallserver.RequestProcessor.java but I get this error:
error: can't read: image.transfer.smallserver.RequestProcessor.javaPlease, can anyone tell me, what's wrong with this?
Thank you for your help
Susanne

I set all possible classpathes. It makes no difference.
If I try it a different way, I get other errors concerning the files I want to import. These files are located in image/transfer/client.
I tried to use smallserver as working directory, simply with the command
javac RequestProcessor.javaI get
Class image.transfer.client.ImageObject not found in importI tried it with the same working directory as before with "/" instead of "." in the path name. I get
error: Invalid class file format: ./image/transfer/client/ImageObject.class, wrong version: 46, expected 45and addionally the message from above (ImageObject not found)

How can I open in java file a text file?

Hi !
For example I have a java file name Pencil.java and I have a text fie name Box.txt
I want like that if ( a == b ) {open Box.txt}
How can I do that ?
Thanks.

Yes I want to see what this text file contains. Like clicking to a text file with mouse and opens. Then I can see what it contains.
I have a Java document Pencil.java and I have a text file Box.txt
I will write a java code in pencil.java ( that I dont know ). Then when I enter a number from keyboard with
Scanner write = new Scanner(System.in);
int a = write.nextInt()
if (a == b) { } opens Box.txt
For example
I write to command prompt
java pencil
It wants from me a number : I will enter 3.
It is same as b .
Then Box.txt file opens.
Edited by: zue on Jun 3, 2008 11:04 AM

Urgent! Pls help me! Can't compile any *.java files

I am a new user to Java2SDK. I am using Win2K sever and I have installed Java2SDK1.4.0 in D drive. When I compile any *.java files, a message " 'javac' is not recognized as an internal or external command, operable program or batch file" appears. How can I solve this problem?
Please help me. I am busy with my homework. Thank you very much.

In your PATH variable include %JAVA_HOME%\bin;
For example:
C:\jdk1.4\bin;

How can I backup data from a case-sensitive volume to a NON-case-sensitive volume?

The case-sensitive volume in this instance being a desktop-mounted disk image volume.
A tragi-comedy in too many acts and hours
Dramatis Personae:
Macintosh HD: 27" iMac 3.06GHz Intel Core 2 Duo (iMac10,1), 12 GB RAM, 1 TB SATA internal drive
TB1: 1 TB USB external drive
TB2: 2 TB USB to Serial-ATA bridge external drive
Terabyte: a .dmg disk image and resulting desktop volume of the same name (sorry, I don't know the technical term for a .dmg that's been opened, de-compressed and mounted -- evanescently -- on the desktop)
Drive Genius 3 v3.1 (3100.39.63)/64-bit
Apple Disk Utility Version 11.5.2 (298.4)
Sunday morning (05/08/11), disk utility Drive Genius 3's drive monitoring system, Drive Pulse, reported a single bad block on an external USB2.0 1TB drive, telling me all data would be lost and my head would explode if I didn't fix this immediately. So I figured I'd offload the roughly 300 GB of data from TB1 to TB2 (which was nearly empty), with the intention of reinitializing TB 1 to remap the bad block and then move all its data BACK from TB 2. When I opened TB1's window in the Finder and tried to do a straight "Select All" and drag all items from TB1 to TB2, I got this error message:
"The volume has the wrong case sensitivity for a backup."
The error message didn't tell me WHICH volume had "the wrong case sensitivity for a backup," and believe me, or believe me not, this was the first time I'd ever heard that there WAS such a thing as "case sensitivity" for a drive. I tried dragging and dropping some individual folders -- some of them quite large, in the 40GB range -- from TB1 to TB2 without any problem whatsoever, but the majority of the items were the usual few-hundred-MB stuff that seems to proliferate on drives like empty Dunkin' Donuts coffee cups on the floor of my car, and I didn't relish the idea of spending an afternoon dragging and dropping dribs and drabs of 300GB worth of stuff from one drive to another.
Being essentially a simple-minded soul, I had what I thought was the bright idea that I could get around the problem by making a .dmg disk image file of the whole drive, stashing it on TB2, repairing and re-initializing TB1, and then decompressing the disk image I'd made of TB1, and doing the "drag and drop" of all the files in resulting desktop volume to TB1. So I made the .dmg of TB1, called "Terabyte," stashed that .dmg on TB2 (no error messages this time), re-initialized and then rebooted the iMac from my original Snow Leopard 10.6.1 disks and used Disk Utility to erase and initialize TB1 -- making sure that it was NOT initialized as case-sensitive, and installed a minimal system on TB1 from the same boot. Then I updated that 10.6.1 system to 10.6.7 with System Update, and checked to see that Disk Utility reported all THREE drives -- internal, 1TB, and 2TB -- as Mac OS Extended (Journaled), and no "case sensitive" BS. I also used Drive Genius 3's "information" function for more detailed info on all three drives. Except for the usual differing mount points, connection methods, and S.M.A.R.T. status (only the Macintosh HD internal, SATA 1TB drive supports S.M.A.R.T.), everything seemed to be oojah-***-spiff, all three drives showing the same Partition Map Types: GPT (GUID Partition Table.) Smooth sailing from here on out, I thought.
Bzzzzt! Wrong!
When I opened the Terabyte .dmg and its desktop volume mounted, I tried the old lazy man's "Select All" and drag all items from the desktop-mounted drive "Terabyte" to TB1, I got the error message:
"The volume has the wrong case sensitivity for a backup."
I then spent the next three hours on the phone with AppleCare (kids -- when you buy a Mac ANYTHING, cough up the money for AppleCare. Period.), finally reaching a very pleasant senior tech something-or-other in beautiful, rainy Portland, OR. Together we went through everything I had done, tried a few suggestions she offerred, and, at the end of three hours, BOTH of us were stumped. At least I didn't feel quite as abysmally stupid as I did at the beginning of the process, but that was all the joy I had gotten after two solid days of gnawing at this problem -- and I mean SOLID; I'm retired, and spend probably 12 hours a day, EVERY day, at the keyboard, working on various projects.
The AppleCare senior tech lady and I parted with mutual expressions of esteem, and I sat here, slowly grinding my teeth.
Then I tried something I don't know why I was so obtuse as to not have thought of before: I opened Apple's Disk Utility and checked the desktop-mounted volume Terabyte (Mount Point: /Volumes/Terabyte), the resulting volume from opening and uncompressing the .dmg "Terabyte".
Disk Utility reported: "Format : Mac OS Extended (Case-sensitive)." Doh!
Obviously, TB1, the 1 TB USB external drive I'd actually bought as part of a bundle from MacMall when I bought my 27" iMac, and which I had initialized the first day I had the iMac up and running (late November 2009), had somehow gotten initialized as a Case-sensitive drive. How, I don't know, but I suspect the jerk behind the keyboard. Whatever the case, when I created the Terabyte disk image (the drive's original name: when I erased and re-initialized it -- see above -- I renamed it "1TB" for quick identification), the original drive's "Case-sensitive" format was encoded too. So when I tried to drag and drop EVERYTHING from the desktop-mounted volume "Terabyte" to the newly initialized and "blessed" (now THERE's a term from the past!), the system recognized it as an attempt as a total volume backup, and hit me with "The volume [the desktop-mounted volume "Terabyte" -- BB] has the wrong case sensitivity for a backup." And, of course, the reinitialized TB1 was now correctly formatted as NOT "case-sensitive."
Well, that solved the mystery (BTW, Disk Utility identified the unopened Terabyte.dmg as an "Apple UDIF read-only compressed {zlib}, which is why the .dmg file could be copied to ANY volume, case sensitive or not), but it didn't help me with my problem of having to manually move all that data from the desktop-mounted volume "Terabyte" to TB1. I tried to find a way to correct the problem at the .dmg AND opened-volume-from-.dmg level with every disk utility I had, to no avail.
Sorry for the long exposition, but others may trip over this "case-sensitive" rock in the road, and I wanted to make the case as clear as possible.
So my problem remains: other than coal shovel by coal shovel, is there any way to get all the data off this case-sensitive desktop-mounted volume "Terabyte" and onto TB1.
Not that I know whether it would made any difference or not, one of the things that got me into this situation was my inability to get "Time Machine" properly configured so it wasn't making new back-ups every (no lie) 15 minutes.
Philosophical bonus question: what's the need for this "case-sensitive," "NOT case-sensitive" option for disk initialization?
As always, thanks for any help.
Bart Brown

"Am I to understand that you have a case-sensitive volume with data that you want to copy to a case-insensitive volume? And the Finder won't let you do it? If that's what the problem is, the reason should be obvious: on the source volume, you may have two files in the same folder whose names differ only in case. When copying that folder to the target volume, it's not clear what the Finder should do."
Yes, I understand all that... NOW.
What I had (have) is a USB external 1TB drive (henceforth known as "Terabyte") that I bought with my 27" iMac. I formatted, and put a minimal (to make it bootable) system on Terabyte the same day back in late November 2009 that I set up my 27" iMac. Somehow -- I don't know how -- Terabyte got initialized as "case-sensitive." I didn't even know at the time that there WAS such a thing as "case-sensitive" or "NOT case-sensitive" format.
Sunday morning (05/08/11), Drive Pulse, a toolbar-resident utility (that's Part of Drive Genius 3) that monitors internal and external drives for physical, problems, volume consistency problems, and volume fragmentation, reported a single bad block on the volume Terabyte, advising me that it would be best if I re-formatted Terabyte ASAP. I thought I could open Terabyte in a Finder window, Select All, and drag everything on the drive to ANOTHER USB external drive of 2 TB capacity (henceforth known as TB2). When I tried to do that, I got an error message:
"The volume has the wrong case sensitivity for a backup."
First I'd heard of "case sensitivity" -- I'm not too bright, as you seem to have realized.
Oddly enough (to me), I could move huge chunks of data, including a folder of 40GB, from Terabyte to TB2 with no problem.
Then the scenario unfolded per my too-convoluted message: several hours of trying things on my own, including making a .dmg of Terabyte (henceforth to be known as Terabyte.dmg) -- which left me with the exact same problem as described in the previous 4 paragraphs; and my 3 hours on the phone with AppleCare, who at least explained this case-sensitive business, but, after some shot-in-the-dark brainstorming -- tough to do with only one brain, and THAT on the OTHER end of the line -- the very pleasant AppleCare rep and I ended up equally perplexed and clueless as to how to get around the fact that a .dmg of a case-sensitive volume, while not case-sensitive in its "image" form (Terabyte.dmg), and thus able be transferred to TB1 or TB2 with no problems whatsoever, when opened -- either by double-clicking or opening in Disk Utility -- produced a desktop-mounted volume (henceforth known as the volume "Terabyte," the original name of the case-sensitive volume from which TB1.dmg had been made) that had the same case-sensitivity as the original from which it was made.
In the meantime, having gotten the data I needed to save off the physical USB "case-sensitive" volume Terabyte in the form of Terabyte.dmg, I erased and re-initialized the physical USB "case-sensitive" volume Terabyte, getting rif of the case sensitivity, and renaming it TB1. But it all left me back at square one, EXCEPT I had saved my data from the original "Terabyte" drive, and reformatted that drive to a NON- case-sensitive data now named TB1. The confusion here stems from the fact that problem case-sensitive drive, from which I made Terabyte.dmg, was originally named "Terabyte". When I re-initialized it as a NON case-sensitive drive, I renamed it TB1. I'm sorry about the confusing nomenclature, which I've tried to improve upon from my original message -- usual text-communication problem: the writer knows what he has in mind, but the reader can only go by what's written.
So, anyway, I still have the same problem, the desktop-mounted volume "Terabyte" still cannot be transferred in one whole chunk to either my internal drive, TB1, TB2, as the Finder interprets it as a volume backup (which it is), and reads the desktop-mounted volume "Terabyte" as case-sensitive, as the original volume -- from which the disk image Terabyte.dmg was made -- had been at the time I made it.
"As long as that situation doesn't arise, you should be able to make the copy with a tool that's less fastidious than the Finder, such as cp or rsync."
I'm afraid I have no idea what "cp or rsync" are. I'd be happy to be educated. That's why I came here.
Bart Brown
Message was edited by: Bartbrn
Just trying to unmuddy the water a bit,,,

Why Java is case sensitive unlike SQL?

Is it a good concept to have a case sensitive lang. or not.
Like we have SQL which is not case sensitive....so which is better concept and why.

Sheetal_Singh wrote:
But there sho be some logic behind this that sun devp made it case sensitive......
It become difficult for user to made code because we have to remember d case as well.
SQL cm afetr Java n it is not case sensitive,So microsoft must hav thought smthing that they made a case insensitive lang.Yes, you're absolutely right: when Microsoft set out to write SQL, they learned from Java's mistake and made it case-insensitive. Moving forward, Google is building on their experience to create an even more powerful language called "BASIC" that's not only case-insensitive, it has line numbers embedded right in the code!

Where do i place my html files,classes and Java files

Can any one plz help me out here. I'm using Tomcat3.2.1 to
run my servlets, I have written the servlets and gotten
tomcat to run as well. What confuses me now is where my
files should be placed.
- Do i have to create a special directory to contain my html
files ?
- another directory for my servlet classes ?
- how about my .java files ?
- and how should i call my servlet from the html code ?
HEEEEEEEEEEEEEEEEEEEEELLLLLLLLLLLLLLPPPPPPPPPPPP!!!!!!!!!!!!!!!

hi,
you can my post here http://forum.java.sun.com/thread.jsp?forum=33&thread=302433

Until how many lines can we write java file

in java file, how many lines can I write?
Manybe It will depend on file system such as window, unix file system.
but, I don't know the exact size.
please let me know how many lines I can wirte in java file of window and unix file system.
thank you in advance.

A class and method implementation in source lines of code (sans comments and white space) should be as large as necessary, but no larger. Good design principals tend to drive towards smaller peices, but there is no one right size size limit.
Personally, I suspect any method that has over 50 lines of code as being too large and probably refactorable. I also suspect any single class (or for that matter .java file) with more than 50 methods or more than 2000 lines of code as being too large and probably refactorable. But sometimes we might really need a 500 line method or an 8000 line, 200 method class. Maybe its a performance thing. Maybe it is just that complicated and too hard to break up. I doubt it occurs frequently, but I won't be shocked when I see it.
Sometimes GUI classes (Swing and AWT) get really huge. Sometimes this is due to code generation, sometimes its just being sloppy. It pays to know the difference.
But the Java langauge sets reasonable (if not overly generous) limits on bytecode and constant pool sizes If the Java compiler begins to complain that something you have built is is too large, face it, it probably is. It's like running into scope nesting or nested name (class in a class in a class...) size limits - usually not a good sign for the structure of your code.
Chuck

Starting exetutable java file from java code

Hi I was wondering how I can start a executable java file from java code?
thanks

Hi Mkaveli,
Yes, it's possible. If you have a JAR executable, you've just to call the main method of its starter class. For a simple executable class, just call its main method.
This way :
SomeStarter.main(null); // if there's no argumentSmall precision : the executable JAR or class must be specified in the classpath of your application.

Converting a java file to a web service

How can i convert a java file to a web service,And then invoke that service by making my other java file.

You can convert your java file into a WSDL with the WSDL2Java utility in Axis. This will create a definition that will be accessible by potential clients.
To deploy your java class, you can use Axis in a Web Server of your choice (Tomcat, Apache). All you need to do is run the Axis Admin Client for a deploy.wsdd file and point your client to the IP:PORT.
Very straightforward.
http://ws.apache.org/axis/java/user-guide.html
Hope it helps.
SBO

Java Files

Hi,
New to working with OA Framework and JDeveloper, am working with Oracle Applications and need to customize several java files and generate the class files. I found the class files in the $JAVA_TOP, where can I find the java files for the corresponding class files?
Thanks in advance for any information.

>
I've seen Metalink notes related to modifying the java files ...
>
Can you pl identify these Doc numbers ?
>
... - how and where do you get the source code for the java files?
>
My previous reply still applies - Oracle does not provide java source code - see MOS Doc 296509.1 (How To Create Pop Up Messages In iProcurement?0 as an example where Oracle states that java source code is not provided.
HTH
Srini

SomeJavaClass class can store in somejavaclass.java file? case sensitive?

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