Clive De Silva,
I may be wrong, but I think your file would be here:
System.getProperty( "user.dir" );
That should output a string showing the directory where your files will be put by
default. This is because you specified a relative path -- new
java.io.File("states.gip") -- not an absolute path.
You can call 'System.getProperty( "user.dir" )' at anytime from anywhere in your
application, even a jsp.
yours,
Julius Davies, Programmer, CUCBC
Email: [EMAIL PROTECTED], Ph: 604.730.6385
> -----Original Message-----
> From: Clive De Silva [mailto:[EMAIL PROTECTED]]
> Sent: Monday, January 13, 2003 3:48 PM
> To: [EMAIL PROTECTED]
> Subject: saving and opening files
>
>
> Hi, I have placed my package in the \Apache Group\Tomcat
> 4.1\common\classes\ folder and they are all standard Java
> classes [no servlets or jsps]. One of the methods invoked in
> my main class serializes an object and saves it to a
> persistent file at runtime :
>
> ---------------------Start Snip 1-----------------------
> public boolean saveUser(){
> File file2 = new java.io.File("states.gip");
> try{
> myUser.allocateUser(user);
> FileOutputStream out2 = new FileOutputStream(file2);
> ObjectOutputStream s2 = new ObjectOutputStream(out2);
> s2.writeObject(myUser);
> s2.flush();
> System.out.println("You have save successfully");
> return true;
> }
> catch(Exception e){
> e.printStackTrace();
> System.out.println("You have save UN-Successfully");
> return false;
> }
> }
> ---------------------End Snip 1-----------------------
>
> When the class is initialised/created, it first checks to see
> if there is a file called states.gip and if there is, then it
> reads in the object, if there isnt, then it creates an object
> and at a latter stage saves it:
>
> ---------------------Start Snip 2-----------------------
> public boolean createUser(String name){
> try{//see if a user had been created and try to load it back
> File file2 = new java.io.File("states.gip");
> FileInputStream in = new FileInputStream(file2);
> ObjectInputStream s1 = new ObjectInputStream(in);
> myUser = (MainUser)s1.readObject();
> user = recommenderEPG.addUser(name);
> user = myUser.unallocate(user);
> System.out.println("There was an old user!");
> return true;
> }
> catch(Exception e){//user has not been created so an
> exception is thrown -going to create a new user
> try{
> myUser = new MainUser(name);
> user = recommenderEPG.addUser(name);
> myUser.allocateUser(user);
> System.out.println("there is definitely no old user");
> return true;
> }
> catch (DataNotFoundException ef){
> return false;
> }
> }
> ---------------------End Snip 2-----------------------
>
> When the class does get created for the first time, it does
> not see the 'states.gip' file, which is correct, because it
> has not been created yet. If it is instantiated for a second
> or nth time, it always sees the file and loads it correctly.
> My Question is: where is this file stored? I can not find a
> physical trace of this file - i have done search after search
> and it is not there - yet the Java class opens it correcly!!!!! Help!
>
>
> Regards,
>
> Clive
>
>
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