java-programmer >>Is Microsoft Java-1 ( MS JVM ) supported on Vista????????

Is Microsoft Java-1 ( MS JVM ) supported on Vista????????

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- 1
  - 64-bit Sparc laptopIf you are a Solaris on SPARC user, you might want to know that
    Tadpole is running a drawing on its websit, www.tadpolecomputer.com,
    for one of its new 64-bit SPARC laptops.
    
    John Davis
- 2
  - OT(?) - Java Applet and Browser IssueI'm trying to troubleshoot the cause of the following errors:
    
    basic: Registered modality listener
    basic: Referencing classloader: sun.plugin.ClassLoaderInfo@a6aeed,
    refcount=1
    basic: Added progress listener: sun.plugin.util.GrayBoxPainter@af8358
    basic: Loading applet ...
    basic: Initializing applet ...
    basic: Starting applet ...
    network: Connecting http://www.java.com/jsp_utils/JavaCallJS.class with
    proxy=DIRECT
    network: Connecting http://www.java.com/jsp_utils/JavaCallJS/class.class
    with proxy=DIRECT
    load: class JavaCallJS.class not found.
    java.lang.ClassNotFoundException: JavaCallJS.class
    at sun.applet.AppletClassLoader.findClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at sun.applet.AppletClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at sun.applet.AppletClassLoader.loadCode(Unknown Source)
    at sun.applet.AppletPanel.createApplet(Unknown Source)
    at sun.plugin.AppletViewer.createApplet(Unknown Source)
    at sun.applet.AppletPanel.runLoader(Unknown Source)
    at sun.applet.AppletPanel.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)
    Caused by: java.io.IOException: open HTTP connection failed.
    at sun.applet.AppletClassLoader.getBytes(Unknown Source)
    at sun.applet.AppletClassLoader.access$100(Unknown Source)
    at sun.applet.AppletClassLoader$1.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    ... 10 more
    basic: Exception: java.lang.ClassNotFoundException: JavaCallJS.class
    
    The error that has caught my eye is "open HTTP connection failed". I
    have local Java apps (Eclipse IDE, Unlimited FTP) that run fine but
    can't access the internet. But applets don't run - just generate errors
    like above. Turns out that there are no Java related plugins in the
    Firefox plugins directory. I've got Quicktime and Flash related files
    there, but nothing Java related. If I try to install JRE 5, it tells me
    that it's already installed. Yet applets (e.g. www.java.com) cause
    General Exception Errors and I still have no Java related files in my
    plugins directory.
    
    Anybody have ideas as to the cause of this? Coudl somebody tell me
    which files need to be in the plugins directory? Maybe I can just copy
    them there myself.
    
    Thx
    -K2
- 2
  - opening default browserHello everybody.
    
    I'm new to Java.
    
    I have created simple JPanel: Help->About.
    
    I have placed there a link to my web page with message: download the
    newest version.
    
    OK it is a text message - I want to add sth like in Eclipse's
    Help->About - a link to my page.
    
    How can I open in Java a page in default system browser?
    
    I'm newbie, I searched with google but every time I entered word
    related to browser or opening browser I have - yes - Java but 'Java
    Script' results...
    
    thanks in advance for Your help
    best regards R
- 4
  - Applet that detects ip behind anon proxy...Does anyone here know of such an applet?
    thankyou
- 4
  - Passing an unknown number of parameters to AntHEllo,
    
    You can pass parameters from the command line to your ant build file
    by using properties.
    Using ant -Dname=value lets you define values for properties on the
    Ant command line.
    These properties can then be used within your build file as any normal
    property: ${name} will put in value.
    
    However,
    Let's say that I have the following java program:
    ++++++++++++++
    class Test {
    public static void main(String argv[]) {
    for (int i = 0; i < argv.lenght;i++)
    System.out.println("param " + i + ": " + argv[i]);
    }
    }
    ++++++++++++++
    
    and I have the following ant file:
    ++++++++++++++
    <project basedir=".">
    <target name="run">
    <java fork="true" classname="Test"/>
    </target>
    </project>
    ++++++++++++++
    
    How do I need to modify the ant file so that executing "ant run one
    two three" from the command line, produces:
    ++++++++++++++
    param 1: one
    param 2: two
    param 3: three
    ++++++++++++++
    
    (and it works for any number of parameters)
    
    Many thanks,
    DAvid
- 4
  - javax.net.ssl.HttpsURLConnectionHello,
    I need the library javax.net.ssl.HttpsURLConnection.
    But all the package i find where there is javax.net.ssl do not
    contained the class HttpsURLConnection.
    Does anyone have an idea where i can find it ?
    Thank's a lot for your help
    Sorry for my English?I'm French ;)
- 6
  - How to intercept Ctrl key - eg Ctrl E being pressed on Java console programHello
    
    I am writing console programs and my program waits streaming in text input
    from the screen. But I need a way for the user to abort - I thought Ctrl
    E - but how can I know when Ctrl E has been pressed.
    
    I am roughly doing this sort of thing:
    
    import java.io.*;
    
    public class blah
    {
    public static void main(String[] args)
    {
    // declaration section:
    BufferedReader cin = null; // console input
    String conline;
    
    try
    {
    cin = new BufferedReader(new InputStreamReader(System.in));
    System.out.println("Enter strings to remove last character");
    
    System.out.println("waiting... Press Ctrl E to end session");
    while ((conline = cin.readLine()) != null)
    {
    // If Ctrl E detected abort - break out - BUT HOW???
    
    System.out.println("processing: " + conline);
    int len = conline.length();
    String strRemovedot = conline.substring(0,len-1);
    System.out.println(strRemovedot);
    
    }
    
    cin.close();
    
    }
    catch (IOException e)
    {
    System.err.println("IOException: " + e);
    }
    }
    }
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  - Reading HDD serialNoHi all,
    
    Could you help me please to find out how to read the harddisk serial
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    Thanks a lot!!
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  - Ltd. Enrollment NotificationAttention Potential Candidate:
    
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    To UNSUBSCRIBE, email to email***@***.com
    with a subject of "unsubscribe". Trouble? Contact email***@***.com
- 10
  - How to get path to current directory?Hello.
    
    How to get path to current directory and put this path to object of class
    String?
    I found FileSystemView.getHomeDirectory() but it returns path to home
    directory for example:
    
    C:\Documments and Settings\Thomas
    
    Thanks for help.
- 11
  - package com.ibm.security.x509 does not existHow to fix this compile error with jdk 1.5.0_14 on windows 2000:
    AsnName.java:144: package com.ibm.security.x509 does not exist
    encoding = (new
    com.ibm.security.x509.X500Name(mName)).getEncoded();
    ...
- 11
  - How to download a text file from server to client?hi,
    I am devoloping a web application using JSP and Servlets.
    The first thing I need to know is how to create a text file in the
    sever.
    Once the text file is created there should be an option for
    downloading it to the client.It could a link.On click of that link the
    user should be able to save it to the client.
    
    any help will be great!
    thanks in advance.
    ---------------------------chik
- 12
  - Microsoft Hatred FAQemail***@***.com wrote...
    > On Tue, 25 Oct 2005 15:35:47 +0000, Not Bill Gates wrote:
    >
    > > Heck, I dunno. Like you, I don't even really care all that much.
    >
    > You don't care that innovation in desktop software has been crippled by
    > the actions of the monopoly player Microsoft?
    
    You need to first prove innovation in desktop software has been
    crippled, don't you?
- 14
  - Perfomance for multiple inserts> Statement stmt = con.createStatement();
    > stmt.addBatch("insert into table_name1 ...");
    > stmt.addBatch("insert into table_name2 ...");
    > stmt.addBatch("update table_name3 ...");
    > stmt.addBatch("update table_name4 ...");
    > stmt.addBatch("delete from table_name5 ...");
    > stmt.executeBatch();
    >
    > And that is a good idea because the critical part of operations
    > like this is the Statement-object. That has the direct connection
    > with the SQL-server-side. And now you are able to execute a lot
    > of statements with only 1 Statement-object, this looks like
    > an sql-batch-script.
    
    And if you (original author) going to benchmark, you could try concatenating
    insert queries into a one large sql formula. Then you just run it and let
    dbserver do the job.
    StringBuffer sBuffer = new StringBuffer();
    sBuffer.append("Insert Into ....;");
    sBuffer.append("Insert Into ....;")
    sBuffer.append("Insert Into ....;");
    stmt = connection.createStatement(sBuffer.toString());
    stmt.execute();
- 14
  - Finding Available JREs I'm hoping someone here can point me in the right direction. What
    is the most reliable way to detect the available JREs installed on a
    target system? Is the Windows registry sufficient under Windows?
    Where does one look on a Linux system?
    
    Any help on this matter would be greatly appreciated.
    
    Thanks!
    
    Damon Courtney

Author

Message

cHJhc2Fk

Posted: 2006-11-13 14:38:00

Top

java-programmer, Is Microsoft Java-1 ( MS JVM ) supported on Vista???????? I know that Sun java 1.6 was developed exclusively for Vista...
Wat i wanted to know is that whether Microsoft Java Virtual machine MS JVM (
java-1) is supported on Vista or not??

Please reply as soon..

Index ‹ java-programmer

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- 1
  - Using pictures from the jar?
    
    I create the jar with my classes, pictures and some txt files. The
    application is starting just fine if picture folder is out of the jar.
    If the folder picture is in the jar I don't see the pictures on my buttons
    and everywhere.
    How to solve that problem?
- 2
  - problem with Retroguard and Java 2 JDK?Hello
    
    I have previously used Retroguard with jdk 1.1.8 but am having
    problems using j2sdk 1.4.2_03. Get the following errors in the log
    file. Any ideas why please?! The scr and run batch files which I am
    using follow the error messages...
    
    Geoff
    
    # Unrecoverable error during obfuscation:
    # java.lang.ClassNotFoundException:
    symantec.itools.awt.util.dialog.ModalDialog
    java.lang.ClassNotFoundException:
    symantec.itools.awt.util.dialog.ModalDialog
    at java.net.URLClassLoader$1.run(URLClassLoader.java:199)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:187)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:289)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:274)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:235)
    at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:141)
    at a.a.a.f.a(Unknown Source)
    at a.a.a.f.a(Unknown Source)
    at a.a.a.f.j(Unknown Source)
    at a.a.a.j$4.a(Unknown Source)
    at a.a.a.j.a(Unknown Source)
    at a.a.a.j.a(Unknown Source)
    at a.a.a.j.a(Unknown Source)
    at a.a.a.j.a(Unknown Source)
    at a.a.a.j.a(Unknown Source)
    at a.a.a.j.if(Unknown Source)
    at a.a.a.s.do(Unknown Source)
    at a.a.a.s.a(Unknown Source)
    at RetroGuard.a(Unknown Source)
    at RetroGuard.a(Unknown Source)
    at RetroGuard.main(Unknown Source)
    
    1. scr batch file
    
    set CLASSPATH=d:\retro\retroguard.jar;d:\retro\symbeans.jar
    
    c:\j2sdk1~1.2_0\bin\java -classpath %CLASSPATH% RGgui
    
    2. run bacth file
    
    set CLASSPATH=d:\retro\retroguard.jar;d:\retro\symbeans.jar
    
    c:\j2sdk1.4.2_03\bin\java -classpath %CLASSPATH% RetroGuard 030204.jar
    ob030204.jar 030204.rgs 030204.log
- 3
  - Checbox help!!!I am trying to write a program that calculates the price when the checkboxes
    are selected and the calculate button is pressed.
    Now I am not sure how to code the part where you click the box and the price
    of that item appears. Any suggestions?
    
    Here is what I have now:
    
    import java.awt.*; //Abstract Window Toolkit (AWT) for creating
    //painting graphics, interfaces and images
    import java.applet.*; //gives the classes for an applet to create and
    //communicate in applet context
    import java.awt.event.*; //gives classes and interface for different
    //types of events from the AWT
    import java.text.DecimalFormat; //this class formats decimal numbers
    
    public class PetsApplet extends Applet implements ActionListener
    {
    //labels declared
    Label welcomeLabel = new Label ("Welcome to the Pet Clinic");
    Label price = new Label("The total price is $0");
    Label current = new Label("The current price is $0");
    Label serLabel = new Label("Select the service:");
    
    //string text declared
    String currentString = new String();
    String priceString = new String();
    
    //checkboxes identified
    Checkbox officeBox = new Checkbox("Office Visits $10");
    Checkbox vacBox = new Checkbox("Vaccination $25");
    Checkbox xrayBox = new Checkbox("X-Rays $40");
    Checkbox hosBox = new Checkbox("Hospitalization $100");
    Checkbox denBox = new Checkbox("Dentistry $50");
    Checkbox labBox = new Checkbox("Laboratory Work $30");
    Checkbox heartBox = new Checkbox("Heartworm Prevention $35");
    Checkbox boardBox = new Checkbox("Boarding $5");
    Checkbox preBox = new Checkbox("Prescription $55");
    Button calcButton = new Button ("Calculate");
    Label outputLabel = new Label("Click the calculate button for total price");
    
    //price variables of the services declared along with the totalPrice
    int totalPrice = 0;
    int officeBoxPrice = 10, vacBoxPrice = 25, xrayBoxPrice = 40, hosBoxPrice =
    100;
    int denBoxPrice = 50, labBoxPrice = 30, heartBoxPrice = 35, boardBoxPrice =
    5, preBoxPrice = 55;
    
    public void init()
    {
    //adds all the components to the applet interface
    setBackground (Color.blue);
    add(welcomeLabel);
    add(serLabel);
    add(officeBox);
    add(vacBox);
    add(xrayBox);
    add(hosBox);
    add(denBox);
    add(labBox);
    add(heartBox);
    add(boardBox);
    add(preBox);
    add(current);
    add(calcButton);
    calcButton.addActionListener(this);
    add(outputLabel);
    add(price);
    }
    
    public void actionPerformed(ActionEvent e)
    {
    //the current price statement is identified
    if (officeBox.getState())
    
    currentString = ("The current price is $"+ Integer.toString
    (officeBoxPrice));
    
    if (vacBox.getState())
    
    currentString = ("The current price is $"+ Integer.toString (vacBoxPrice))
    ;
    
    if (xrayBox.getState())
    
    currentString = ("The current price is $"+ Integer.toString (xrayBoxPrice))
    ;
    
    if (hosBox.getState())
    
    currentString = ("The current price is $"+ Integer.toString (hosBoxPrice))
    ;
    
    if (denBox.getState())
    
    currentString = ("The current price is $"+ Integer.toString (denBoxPrice))
    ;
    
    if (labBox.getState())
    
    currentString = ("The current price is $"+ Integer.toString (labBoxPrice))
    ;
    
    if (heartBox.getState())
    
    currentString = ("The current price is $"+ Integer.toString (heartBoxPrice)
    );
    
    if (boardBox.getState())
    
    currentString = ("The current price is $"+ Integer.toString (boardBoxPrice)
    );
    
    if (preBox.getState())
    
    currentString = ("The current price is $"+ Integer.toString (preBoxPrice))
    ;
    
    //the text is set equal to currentString
    current.setText (currentString);
    
    //total price is calculated
    totalPrice = 0;
    
    if (officeBox.getState())
    totalPrice += officeBoxPrice;
    
    if (vacBox.getState())
    totalPrice += vacBoxPrice;
    
    if (xrayBox.getState())
    totalPrice += xrayBoxPrice;
    
    if (hosBox.getState())
    totalPrice += hosBoxPrice;
    
    if (denBox.getState())
    totalPrice += denBoxPrice;
    
    if (labBox.getState())
    totalPrice += labBoxPrice;
    
    if (heartBox.getState())
    totalPrice += heartBoxPrice;
    
    if (boardBox.getState())
    totalPrice += boardBoxPrice;
    
    if (preBox.getState())
    totalPrice += preBoxPrice;
    
    //output statement for total price is identified
    priceString = ("The total price is $" + Integer.toString (totalPrice));
    price.setText (priceString);
    
    //statements to clear the fields after the calculate button is clicked
    officeBox.setState(false);
    vacBox.setState(false);
    xrayBox.setState(false);
    hosBox.setState(false);
    denBox.setState(false);
    labBox.setState(false);
    heartBox.setState(false);
    boardBox.setState(false);
    preBox.setState(false);
    
    }
    }
- 4
  - Hel me! I'm going mad!!!Excuse me if I'm repetitive but I need help.
    I thank Micheal Dunn but his suggestion is too particular and it's too
    legates to a specific map of a museum.
    I have this problem.
    I have a map of a generic museum. Every room has maximum 4 links to other
    room. These links have not a cost(the cost is always 1). I must implement a
    algorithm to determinate the shortest path from a room to another room.
    I have created a Class room, this class have these methods eand these data:
    Method:
    public int getNumVicini() //this method gives the number of room linked the
    the object room in question;
    public int getVicino(int v)//this method returns the 1st or the2nd or the
    3rd or the 4th
    public int getId()//return the id of the room
    public String getPercorsi(int i)//return the path from the object room to
    the room with id equals to i
    public boolean verifyVicino(int v)//This method verify if a room with id
    equals to v is linked to the object room
    The there are the method addVicino(int i) that insert i inthe array vicini,
    the method setname, setid, getname, getid etc.
    Data:
    private int vicini[]=new int[4];//this array contains the id of the linked
    rooms
    public String percorsi[]= new String[9];//this array contain the path from
    the object room to all the others rooms in percorsi[0] there is the path
    from object room to the room with id=0, in percrosi[1] path from object room
    to the room with id[1], etc.
    private int id;//in this int there's the id of the room
    private String nome;//in this string there's the name of the room
    
    In the main I have an array that contains all the room of the museum(Room
    museum[]=new Room[x]).
    The I have created a class Path to determinate the shortest path from a room
    to another room.
    This is the class Path:
    
    public class Path {
    private Room start;
    
    public Path(Room r){ //the constructor take a room the room of start
    and set the path to the linked room
    for(int i=0; i<r.getNumVicini(); i++){
    r.verifica[r.getVicino(i)]=true; //r.getVicino(i) give the id of
    the linked rooms and set the verify[x], where x is the id of the linked
    room, to true, because the shortest path is immediate
    r.percorsi[r.getVicino(i)]+=r.getId()+ " " +
    r.getVicino(i);//set the path to the linked room i equals to the id of the
    start room an the id of the end room in this case the is of the end room is
    the id a linked room
    }
    start=r;//it assigns the object r to start
    }
    
    private void findRoad2(Room end){ //this method permit to calculate
    the path from 2 rooms that have a common linked room, but I don't know how
    do to determinate a path for 2 room if between these 2 rooms there is more
    of one room for example if I have these room 2-9-6-8(hte number are the id
    of the room , the - are the link), with this method I am able to
    derterminate the path from 2 to 9, from 2 to 6, but not for 2 to 8
    for(int i=0; i<start.getNumVicini(); i++){
    for(int j=0; j<end.getNumVicini(); j++){
    if(start.getVicino(i)==end.getVicino(j) &&
    start.verifica[end.getId()]==false){//This cycle verify if there is a common
    linked room(like the room 9 in the example of the path from 2to6)
    start.verifica[end.getId()]=true; //if there is this
    common linked room it sets the verify[end.getId()] to true to indicate that
    the path it is been determinated
    start.percorsi[end.getId()]=start.getId()+ " " +
    start.getVicino(i) + " " + end.getId(); //set the path, this path is equals
    to start id and the id of the common linked room and end room id
    }
    }
    }
    }
    
    If I have a map of the museum of this type:
    
    7-8-3
    | | |
    6-4-2
    | | |
    5-0-1
    (this map is only an example I could have a museum with 13 rooms that are
    arranged in irregular way)
    
    with the code that I have written I can determinate the path from 7 to 8,
    from 7 to 6, from 7 to 4, from 7 to 3 and from 7 to 5, but NOT from 7 to 0,
    from 7 to 1 or from 7 to 2
    At the same way I can determinate the path from 0 to 5, from 0 to 1m from 0
    to 4, from 0 to 8, from 0 to 2, from 0 to 6, but NOT from 0 to 3, from 0 to
    7.
    The some thing is for the rest of the rooms. I don't know how do to
    determinate the rest of the path.
    How can I do?
    Thanks and excuse me.
- 5
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- 6
  - Accessing the associated dataModel when a particular frame is selectedI have JDesktop containing one or more JInternalFrames. Each of these
    frames contains a JScrollPane which in turn contains a JTable, each
    with its own tableModel. I wish to add a row to the table in the
    currently selected frame. How do I recover the tableModel to do this?
    I can do it if I only have a single table using:
    
    table.getModel().addRow(item);
    
    but it would be easier for my end users if they could have multiple
    tables open. The tables all have the same structure but have differing
    numbers of rows. I also may need to edit existing items in the tables.
    
    In line with the MVC architecture of Swing, it appears as if I am
    trying to get to the model through the view rather than keeping the
    model separate. This implies that I should keep a list (collection?)
    of each model as I create it in my application. The difficulty then
    becomes associating the currently selected view with the appropriate
    model so that the editing is done in the appropriate table.
    
    Any ideas or suggestions?
    
    Oh, and a happy new year to everyone :-)
    
    Bob
- 7
  - Problem with "if - else" statement in for loopI am having problems with this section of code...
    
    public void updateRank(){
    int x = -1;
    int y = -1;
    String winnerMemNum = JOptionPane.showInputDialog
    ("Enter winner's membership number:");
    
    int wMemNum = Integer.parseInt(winnerMemNum);
    
    for(int i=0;i<list.size();i++){
    Player temp = (Player)list.get(i);
    if(temp.getMemberNumber() == wMemNum)
    x = i;
    else
    System.out.println("Player not found");
    break;
    }
    
    I want the condition in the if statement to be tested for every element
    in the list before the code in the else block executes, but at the
    moment it is only testing the first element. I know I need to put
    brackets in, but when I did that, the whole thing stopped working! Any
    ideas?
- 8
  - Can start() method access applet parameters?I have a signed applet that needs to read in data passed from HTML
    page
    via PARAM elements defined in EMBED tag. Since I cannot launch a
    method
    directly via JavaScript (bug), I thought I'd try to see if I could get
    the
    code to run as needed via the start() method by reloading the page.
    But my
    applet is not recognizing the parameter values being passed in (when
    output
    for debugging, they show up as null). Can parameters be passed like
    this to
    the start() method??
    
    Test HTML page:
    
    <html>
    <head><title>
    Test a Signed Applet
    </title></head>
    <body>
    <EMBED type="application/x-java-applet;jpi-version=1.4.2"
    name="Launch" code="LaunchHSDXPlugIn.class"
    archive="LaunchHSDXPlugIn.jar" WIDTH=120 HEIGHT=75
    <PARAM NAME="ImageFile"
    VALUE="\\ain-www06.devsrv\output\mapfile.jpg">
    <PARAM NAME="VBCodeLocation"
    VALUE="\\ain-www06.devsrv\RivCopy\CopytoClipboard.exe">
    </EMBED>
    <br><br>
    <img name="copy" src="copy.png" onMouseDown="location.reload(true);">
    </body>
    </html>
    
    Test JAVA code:
    
    import java.applet.*;
    import java.io.*;
    
    public class LaunchHSDXPlugIn extends Applet
    {
    public void start()
    {
    System.out.println("\n** In start method.\n");
    
    try
    {
    String getval = null;
    getval = getParameter("ImageFile");
    System.out.println("the imagefile is " + getval);
    
    Runtime.getRuntime().exec("w:\\hyperionics\\hypersnap\\hsdx.exe -
    fixed_title " + getval);
    
    Thread.sleep(2500);
    getval = getParameter("VBCodeLocation");
    System.out.println("the vbcodelocation is " + getval);
    Runtime.getRuntime().exec(getval);
    }
    
    catch (SecurityException e1)
    {
    System.out.println("\n** An access control error occurred
    attempting to run LaunchHSDXPlugIn applet.\n");
    e1.printStackTrace();
    }
    
    catch (IOException e2)
    {
    System.out.println("\n** Error attempting to execute HyperSnap or
    copy to clipboard.\n");
    e2.printStackTrace();
    }
    
    catch (Exception e3)
    {
    System.out.println("\n** An error occurred attempting to run
    LaunchHSDXPlugIn applet.\n");
    e3.printStackTrace();
    }
    }
    }
- 9
  - Event-Handling: Using one single class for different events?
    Hi!
    
    I am rather new to Java, so please, don't blame me for this question.
    
    What I want is to seperate the GUI- from the Application code. Hence,
    I have created three classes:
    
    1. a Main class
    2. a MainFrameCommand class, which parses the events
    3. a MainFrameGUI class, that creates and paints the gui
    
    (for a trivial example see end of this post)
    
    Now, my question is this: Is it correct, to put all the various events
    into one single command class (i.e, Focus-, Key-, Mouse-, and Windows-
    Events) and then register the various event-listeners using this
    single class?
    
    It works perfectly, however, I wonder if this is a legal way to do so,
    or is it necessary to create a seperate class for every different
    event-listener-type?
    
    Example:
    
    ------------------------------------------------------------
    1. Main Class
    ------------------------------------------------------------
    class Main {
    
    public static void main(final String[] args) {
    MainFrameCommand cmd = new MainFrameCommand();
    MainFrameGUI gui = new MainFrameGUI(cmd);
    }
    }
    
    ------------------------------------------------------------
    2. MainFrameCommand Class
    ------------------------------------------------------------
    
    import java.awt.*;
    import java.awt.event.*;
    
    class MainFrameCommand
    implements KeyListener, MouseMotionListener, WindowListener {
    
    /* Key Listener */
    public void keyPressed(KeyEvent event) {}
    public void keyReleased(KeyEvent event) {}
    public void keyTyped(KeyEvent event) {}
    
    /* MouseMotion Listener */
    public void mouseMoved(MouseEvent event) {}
    public void mouseDragged(MouseEvent event) {}
    
    /* WindowListener */
    public void windowClosed(WindowEvent event) {}
    public void windowOpened(WindowEvent event) {}
    public void windowClosing(WindowEvent event) {}
    public void windowActivated(WindowEvent event) {}
    public void windowDeactivated(WindowEvent event) {}
    public void windowIconified(WindowEvent event) {}
    public void windowDeiconified(WindowEvent event) {}
    }
    
    ------------------------------------------------------------
    3. MainFrameGUI Class
    ------------------------------------------------------------
    import java.awt.*;
    import java.awt.event.*;
    
    class MainFrameGUI extends Frame {
    public MainFrameGUI(MainFrameCommand cmd) {
    super("Window");
    setSize(300, 300);
    setVisible(true);
    
    /* !!!!!!!!!!!!!!!!!!!!!!! HERE'S THE CRUCIAL QUESTION
    !!!!!!!!!!!!!!!!!!!!!!!
    !!!!!!!!!!!!!!!!!!!!!!! Is it legal to add register all these
    !!!!!!!!!!!!!!!!!!!!!!! event listeners using the same object?!?
    */
    addKeyListener(cmd);
    addWindowListener(cmd);
    addMouseMotionListener(cmd);
    }
    
    public void paint(Graphics g) {}
    }
- 10
  - Notifying ClientsHi,
    I want my server to notify all the clients connected to it.
    Basically the server should send the no. of files (count) in each
    directories. I don't want the server to send this to each and every
    client individually. This should be done in an efficient way.
    Will JMS be used efficiently for this? or Is there any other way
    to do this efficiently?
    
    Thanks,
    Ganesh
- 11
  - Stack and Thread SafetyMay I assume that a stack is thread safe since it extends the
    synchronized vector class?
    
    Thanks.
    
    --
    Kenneth P. Turvey <email***@***.com>
    
    Artificial Intelligence Algorithms Wiki
    http://ai.squeakydolphin.com
- 12
  - Oracle JDBC executeQuery() hanging with a to_char() in the selectCalling statement.executeQuery() hangs, anyone experienced this? Using
    the Oracle thin driver v9.2.0.1.0 running on a Solaris 8 box. The
    code:
    
    Connection connection = cdrDataSource.getConnection();
    Statement statement = connection.createStatement();
    String sql = "SELECT
    TO_CHAR(SOFIXML.SOFI_LIB.SOFI_GET_XML('CA89352LAC42', NULL, NULL))
    FROM DUAL";
    ResultSet resultSet = statement.executeQuery(sql);
    if(resultSet.next()) {
    return resultSet.getString(1);
    }
    
    The SOFI_GET_XML function returns a CLOB and I'm using TO_CHAR() to
    convert is into a VARCHAR2 for speed. Not doing a TO_CHAR and
    processing the CLOB works fine but is a little slow. The query runs
    fine through both TOAD and SQLPlus.
    
    Thanks, Chris
- 13
  - Problem communicating with socket applicationI am experiencing problems when trying to communicate with a TCP socket
    based application that does not always append a <CR> at the end of the data
    and so cannot use readLine on a BufferedInputStream.
    
    I have tried using a simple read in to a char array but have found that
    where the application has sent 4 records using 4 separate socket writes, my
    read operation has resulted in them all being read in to one array and I
    have no means of determining where one record ends and the next begins,
    unless there are <CR> appended to each record, which as I stated is not
    always the case :(
    
    Using a normal unix socket read operation in C++ I would not have this
    problem as each read operation would result in one record.
    
    How can I get java sockets to operate in a similar manner as unix socket
    reads so that one record is obtained in each read operation, regardless of
    whether it is appended with a <CR> or not?
    
    TIA,
    Pep.
- 14
  - Newbie question on stopping an applicationI have a simple console application that prompts the user to enter two
    numbers and then the program multiplies these two numbers and spits out
    the product. No problem so far. The difficulty I'm having is that if
    someone enters a negative number, I want the program to reply something
    like "Does not accept negative numbers!" then stop. I tried using
    "break;" but it generated an error message and said that I was using it
    "outside the loop" or something like that. I would be grateful if
    someone could give me a clue on what I might use for this. Thank you
    very much. My code is below.
    
    public class Kilowatt
    {
    private double costKiloWattHours; //example 8.42 which means cents
    private double hoursUsedPerYear; //example 653
    private double annualCost;
    
    public void setCost(double cost)
    {
    if (cost <= 0)
    {
    //I want the program to say "You can't enter a negative number."
    //Then the program should stop execution.
    }
    
    else
    {
    costKiloWattHours = cost / 100;
    }
    
    }
    
    public void setHours(double hours)
    {
    hoursUsedPerYear = hours;
    }
    
    public double getAnnualCost()
    {
    annualCost = costKiloWattHours * hoursUsedPerYear;
    return annualCost;
    }
    }
    
    import java.util.Scanner;
    
    class Kilowatt_Test
    {
    
    public static void main(String[] args)
    {
    double myCost;
    double myHours;
    
    Scanner myScanner = new Scanner(System.in);
    System.out.print("What's the cost per kilowatt hour? ");
    myCost = myScanner.nextDouble();
    
    Kilowatt myKilowatt = new Kilowatt();
    myKilowatt.setCost(myCost);
    
    System.out.print("How many kilowatt-hours are used per year? ");
    myHours = myScanner.nextDouble();
    myKilowatt.setHours(myHours);
    
    System.out.println("The annual cost is: " +
    myKilowatt.getAnnualCost());
    
    }
    }
- 15
  - http://javaservice.objectweb.org/http://javaservice.objectweb.org/