Java Intelligent with Oracle8i


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Thread: Java Intelligent with Oracle8i

  1. #1
    Regis Biassala Guest

    Java Intelligent with Oracle8i


    Hi,
    I am an Oracle DBA at Datalex(Dublin). My problem is I'd like to create an
    interface that will help us to create a specifique oracle database based
    on our application. What am asking is:

    1. Could java scan the system (machine) and return the number of disks in
    it with the letter assigned to them and free space ???
    (e.g: Drive C 200 MB free space
    Drive D 120 GB free space )

    2.Could java modify a file a write in it ??

    3. could java execute a batch file ??

    4. After compiling is there any possibility to generate an executable file
    so that the JDK is not need to run.

    5. Interface to interact with program would be any browser
    6. Can anyone help me with this ???
    Thanks alot this urgent
    Regis

  2. #2
    Pranav Guest

    Re: Java Intelligent with Oracle8i

    Well i will try to answer some of them
    i will provide answers for 2,3,4

    answer 2) yes java has very powerful file io operations. It can create file
    write on to it, it can open an existing file and edit
    the contents and save the changes

    answer 3) yes u can ver well execute a batch file but i dont know what all
    command can be exceuted by this. I have tried few commands
    and has worked fine. May be work for u as well. Code is provided below


    import java.io.*;

    public class ExecuteBatch
    {
    public static void main(String args[])
    {
    try {
    System.setOut(new PrintStream(new FileOutputStream("some.log")));
    System.out.println("Hi Pranav check your output in some.bat");
    Process p = Runtime.getRuntime().exec("some.bat");


    // handle the input stream
    InputStream is = p.getInputStream();
    int ch;

    while ((ch = is.read()) != -1)
    {
    System.out.print((char)ch);
    }
    }
    catch (Exception e)
    {
    System.out.println("Some exception occurred" +e.getMessage());
    }

    }
    }


    answer 4) there is no way that u can make exe in java. But still there are
    some tools that will allow this but i m not too sure

    i hope this tips helps............................

    Pranav

    Regis Biassala <regis.biassala@datalex.ie> wrote in message
    news:3a1bdc73$1@news.devx.com...
    >
    > Hi,
    > I am an Oracle DBA at Datalex(Dublin). My problem is I'd like to create an
    > interface that will help us to create a specifique oracle database based
    > on our application. What am asking is:
    >
    > 1. Could java scan the system (machine) and return the number of disks in
    > it with the letter assigned to them and free space ???
    > (e.g: Drive C 200 MB free space
    > Drive D 120 GB free space )
    >
    > 2.Could java modify a file a write in it ??
    >
    > 3. could java execute a batch file ??
    >
    > 4. After compiling is there any possibility to generate an executable file
    > so that the JDK is not need to run.
    >
    > 5. Interface to interact with program would be any browser
    > 6. Can anyone help me with this ???
    > Thanks alot this urgent
    > Regis




  3. #3
    Paul Nichols Guest

    Re: Java Intelligent with Oracle8i


    "Regis Biassala" <regis.biassala@datalex.ie> wrote:
    >
    >Hi,
    >I am an Oracle DBA at Datalex(Dublin). My problem is I'd like to create

    an
    >interface that will help us to create a specifique oracle database based
    >on our application. What am asking is:
    >
    >1. Could java scan the system (machine) and return the number of disks in
    >it with the letter assigned to them and free space ???
    >(e.g: Drive C 200 MB free space
    > Drive D 120 GB free space )
    >
    >2.Could java modify a file a write in it ??
    >
    >3. could java execute a batch file ??
    >
    >4. After compiling is there any possibility to generate an executable file
    >so that the JDK is not need to run.
    >
    >5. Interface to interact with program would be any browser
    >6. Can anyone help me with this ???
    >Thanks alot this urgent
    >Regis


    In answer tot he first question, if you are using Java 2, take a look at
    the File.list[] option for determining drives, directories, or files.

    Yes, Java hadnels file io quite easily. java.io is where to start looking.
    There are many options for File I/O.

    To tun an external file, you will simply need to use Java's Runtime Object.
    Very simple way of executing any runnable file (ie. exe,com,bat on Windows).

    To do this within a browser however, you will have HUGE problems. Any access
    in an applet is restricted to the "sandbox" which all Java applets, by default
    must run in. You will need to write a custom security file, and/or digitally
    sign the applet, to get around these security restrictions.

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