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Java Newsletters: Java Newsletters Archive: 160

Go to all tips in Java Newsletters

 === [ The Java FAQ Daily Tips, weekly publication ] ===

 Issue No: 160                                             April 10 2003
12320 subscribers    

Foreword: Excuse me for possible mistakes. English is not native language for me.

In this issue:
  • 1. I try to call the Runtime.exec() command by passing it an array of strings.
  • 2. I write a batch file dynamically.
  • 3. Latest posts on our message board
  • 4. Link to Java FAQ

  • Hello dear friends!

    Tip 1

    Question: I try to call the Runtime.exec() command by passing it an array of strings.

    The problem is that I need to use "&" in my command. It runs perfectly on shell prompt but not by Runtime.exec(). Java cuts all everything away after that sign, so my command is incomplete.

    Answer: No clear explanation to such behavior. Use workaround:
    write your command into file (shell script) and then run this script. It will work Smile

    GetRight is a Download Manager program to help you download files from the Internet.

    Most people have already experienced the problem...you are downloading a file, and your modem gets disconnected, or call waiting interrupts, or your computer crashes, or any number of other problems. Then you have to restart the download from the very beginning, losing all the time you had already spent.

    GetRight solves this problem by allowing you to resume a download. If you got part of the file before the problem, GetRight will restart the download in the middle so it only gets the rest of the file, without having to restart from the beginning. This makes downloading your files much easier and faster.

    GetRight has many other more advanced features to help you download the files--from re-dialing the modem automatically to turning off the computer when it is done getting the files (so you can just leave it alone to do the work!) You can even set a time when it should dial the modem to get the files...so it can do all the work in the middle of the night while you sleep.
    There are too many other features to list here. If you have ever thought "I wish when downloading I could do ______", there's a good chance GetRight already does it!

     

     


    Tip 2

    Question: I write a batch file dynamically.
    First, I collect all data into String value and then write " " as an end of line. But I can not execute this batch file because of this EOL.

    Answer: Use system defined line separator,

    String lineSeparator = System.getProperty("line.separator");


    Latest posts on our message board

    java http Proxy server

    in http proxy server i am communicate with the webservers using URL and URLConnection. it is work fine. but i didn't know how to access the mails through this.
    this thread is here...


    Cannot go on to the next file...

    hi all... i haf this problem... when i add these codes to my program, it cannot read the next text files...
    can help me solve it?


    this thread is here...


    What happens with JMenuItem?

    Hi!

    I've created an application with several frames. The main frame has a Menu
    Bar with all the function that you can use, and each window has a Popup Menu
    with the most useful functions. I thought (not enought, obviously) that you
    can create a JMenuItem and use it in several Menus. For example, Create a
    'Copy' JMenuItem and use it in the Menu Bar and the JPopupMenu ... but it
    doesn't work! When I add a JMenuItem, which was previously added to the Menu
    Bar, to a JPopupMenu ... it disappear from de Menu Bar! Why?


    public class MainFrame extends JFrame{
    this thread is here...


    Applet-Servlet

    I have an Applet and a Servlet changing java objects derilized multiple times. After a few seconds the applet is started it stops. The applet is very easy, it has a thread that send and object and recieve another one and the servlet just the opposite. Anyone can help me?
    this thread is here...


    Meta_mask?

    I have a question when I use InputEvent in AWT. Several constants are defined in InputEvent, such as CTRL_MASK, SHIFT_MASK and META_MASK. Would you tell me what the META_MASK means? Thanks!
    this thread is here...


    use a dll (written in C) in java programm!

    Hi, I have a Frame_Grabber.dll written in C.
    How can I use this DLL in my java application?

    I know how to use java native interface, and to create my own dll, but what if the dll already exists? Should I create my own DLL in any case? Or I can use this FRAME_GRABBER.DLL directly and how pls??

    Does someone know it?
    this thread is here...


    Components are getting resized in gridbag layout.

    Hi,
    I am arranging components in gridbag layout. My parent container is JTabbedpane. But JTextFields (and others too) are getting resized depending on there contents. Can anyone help me in solving this problem.
    Thanks in advance, Shailesh
    this thread is here...


    Please ask your questions and help each other at our Java Forum:
    http://javafaq.nu/forum/


    The Java FAQ Daily Tips is a newsletter that is only sent to those who have specifically subscribed to it (double opt-in).

    To subscribe/unsubscribe to "The Java FAQ Daily Tips" weekly edition newsletter visit our page here:
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    If you have troubles please contact us: subscription@javafaq.nu


    Link to Java FAQ

    If you have added a link to http://javafaq.nu on your WEB-site, please let us know and you will get listed on our
    "pages linking to us" pages! If your page is a programming is programming relates you will of course get listed in the WEB-directory as well. Also, if you link to us, you have a chance to be listed in this newsletter as well.

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    http://javafaq.nu/other/linktous.shtml


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    You will get the answer immediately from auto responder!


    Send your comments, questions, praise and complaints to us:  comments@javafaq.nu

    Copyright (c) 2000 - 2003 John Andersson, All rights reserved.



    8 comments | Printer Friendly Page  Send to a Friend | Java Newsletters | Score: 0
    Posted by jalex on Monday, February 02, 2004 (15:49:02) (2811 reads)

    Java Newsletters: Java Newsletters Archive: 159

    Go to all tips in Java Newsletters
    Issue No: 159 8 April 2003
    12320 subscribers

    Foreword: Excuse me for possible mistakes. English is not native language for me.

    In this issue:
  • 1. I tried to look at the classes for Java Speech technology...
  • 2. Can I use HttpURLConnection class to make HTTPS requests in java 1.2?
  • 3. Why does the InputStreamReader class has a read() method that returns an int and not a char? Why we need additional steps for converting?
  • 4. Latest posts on our message board
  • 5. Link to Java FAQ

  • Hello dear friends!

    Tip 1

    Question: I tried to look at the classes for Java Speech technology... They are not included into JDK. Even more, it seems SUN has no implementation for it. How we can use it if there are no classes?

    Answer: Yes, that's right. Sun does not ship an implementation of JSAPI. Instead, it works with third party speech companies.
    JSAPI (Java Speech API) allows Java applications to incorporate speech technology into their user interfaces. It defines a cross-platform API to support command and control recognizers, dictation systems and speech synthesizers.
    JSAPI includes the Javadoc-style API documentation for the approximately 70 classes and interfaces in the API. The specification also includes a detailed Programmer's Guide which explains both introductory and advanced speech application programming with JSAPI. Two companion specifications are available: JSML and JSGF: the Java Speech API Markup Language (JSML) and the Java Speech API Grammar Format (JSGF) are companion specifications to the Java Speech API. JSML (currently in beta) defines a standard text format for marking up text for input to a speech synthesizer. JSGF version 1.0 defines a standard text format for providing a grammar to a speech recognizer. Both specifications are available at http://java.sun.com/products/java-media/speech/
    The Java Speech API is a freely available specification and therefore anyone is welcome to develop an implementation. The following implementations are known to exist:

    FreeTTS on SourceForge.net

    • Description: Open source speech synthesizer written entirely in the Java programming language.
    • Requirements: JDK 1.4. Read about more requirements on the FreeTTS web site.

    IBM's "Speech for Java"

    • Description: Implementation based on IBM's ViaVoice product, which supports continuous dictation, command and control and speech synthesis. It supports all the European language versions of ViaVoice -- US & UK English, French, German, Italian and Spanish -- plus Japanese.
    • Requirements: JDK 1.1.7 or later or JDK 1.2 on Windows 95 with 32MB, or Windows NT with 48MB. Both platforms also require an installation ViaVoice 98.

    IBM's "Speech for Java" on Linux

    • Description: Beta version of "Speech for Java" on Linux. Currently only supports speech recognition.
    • Requirements: RedHat Linux 6.0 with 32MB, and Blackdown JDK 1.1.7 with native thread support.

    The Cloud Garden

    • Description: Implementation for use with any recognition/TTS speech engine compliant with Microsoft's SAPI5 (with SAPI4 support for TTS engines only). An additional package allows redirection of audio data to/from Files, Lines and remote clients (using the javax.sound.sampled package). Some examples demonstrate its use in applets in NetscapeTM and IE browsers.
    • Requirements: JDKTM 1.1 or better, Windows 98, Me, 2000 or NT, and any SAPI 5.1, 5.0 or 4.0 compliant speech engine (some of which can be downloaded from Microsoft's web site).

    Lernout & Hauspie's TTS for Java Speech API

    • Description: Implementations based upon ASR1600 and TTS3000 engines, which support command and control and speech synthesis. Supports 10 different voices and associated whispering voices for the English language. Provides control for pitch, pitch range, speaking rate, and volume.
    • Requirements: Sun Solaris OS version 2.4 or later, JDK 1.1.5. Sun Swing package (free download) for graphical Type-n-Talk demo.
    • More information: Contact Edmund Kwan, Director of Sales, Western Region Speech and Language Technologies and Solutions (ekwan@lhs.com)

    Conversa Web 3.0

    • Description: Conversa Web is a voice-enabled Web browser that provides a range of facilities for voice-navigation of the web by speech recognition and text-to-speech. The developers of Conversa Web chose to write a JSAPI implementation for the speech support.
    • Requirements: Windows 95/98 or NT 4.0 running on Intel Pentium 166 MHz processor or faster (or equivalent). Minimum of 32 MB RAM (64 MB recommended). Multimedia system: sound card and speakers. Microsoft Internet Explorer 4.0 or higher.

    Festival

    • Description: Festival is a general multi-lingual speech synthesis system developed by the Centre for Speech Technology Research at the University of Edinburgh. It offers a full text to speech system with various APIs, as well an environment for development and research of speech synthesis techniques. It is written in C++ with a Scheme-based command interpreter for general control and provides a binding to the Java Speech API. Supports the English (British and American), Spanish and Welsh languages.
    • Requirements: Festival runs on Suns (SunOS and Solaris), FreeBSD, Linux, SGIs, HPs and DEC Alphas and is portable to other Unix machines. Preliminary support is available for Windows 95 and NT. For details and requirements see the Festival download page.

    Elan Speech Cube

    • Description: Elan Speech Cube is a Multilingual, multichannel, cross-operating system text-to-speech software component for client-server architecture. Speech Cube is available with 2 TTS technologies (Elan Tempo : diphone concatenation and Elan Sayso : unit selection), covering 11 languages. Speech Cube native Java client supports JSAPI/JSML.
    • Requirements: JDK 1.3 or later on Windows NT/2000/XP, Linux or Solaris 2.7/2.8, Speech Cube V4.2 and higher.
    • About Elan Speech: Elan Speech is an established worldwide provider of text-to-speech technology (TTS). Elan TTS transforms any IT generated text into speech and reads it out loud.

    Java wimps please close your ears ... For the Java programmer who
    thought he knew everything there was to know about Java, have a
    look at the most advanced Java newsletter archived on the website
    http://www.smotricz.com/kabutz Guess what, it won't even cost you
    anything! Subscribe today - you won't be disappointed.

    Tip based on JSAPI FAQ


    Tip 2

    Question: Can I use HttpURLConnection class to make HTTPS requests in java 1.2?

    Answer: No, you need to use JSSE which includes HTTPS support - the ability to access data such as HTML pages using HTTPS.
    Since Java 1.4 it is the part of J2SE. Just take HttpsURLConnection class.

    GetRight is a Download Manager program to help you download files from the Internet.

    Most people have already experienced the problem...you are downloading a file, and your modem gets disconnected, or call waiting interrupts, or your computer crashes, or any number of other problems. Then you have to restart the download from the very beginning, losing all the time you had already spent.

    GetRight solves this problem by allowing you to resume a download. If you got part of the file before the problem, GetRight will restart the download in the middle so it only gets the rest of the file, without having to restart from the beginning. This makes downloading your files much easier and faster.

    GetRight has many other more advanced features to help you download the files--from re-dialing the modem automatically to turning off the computer when it is done getting the files (so you can just leave it alone to do the work!) You can even set a time when it should dial the modem to get the files...so it can do all the work in the middle of the night while you sleep.
    There are too many other features to list here. If you have ever thought "I wish when downloading I could do ______", there's a good chance GetRight already does it!


    Tip 3

    Question: Why does the InputStreamReader class has a read() method that returns an int and not a char? Why we need additional steps for converting?

    Answer: When end of stream is reached we always get the value -1. It is not possible with char. How do we know when stream is empty? We can not use EOF, EOL and so on...


    Latest posts on our message board
    java http Proxy server

    in http proxy server i am communicate with the webservers using URL and URLConnection. it is work fine. but i didn't know how to access the mails through this.
    this thread is here...


    Cannot go on to the next file...

    hi all... i haf this problem... when i add these codes to my program, it cannot read the next text files...
    can help me solve it?


    this thread is here...


    What happens with JMenuItem?

    Hi!

    I've created an application with several frames. The main frame has a Menu
    Bar with all the function that you can use, and each window has a Popup Menu
    with the most useful functions. I thought (not enought, obviously) that you
    can create a JMenuItem and use it in several Menus. For example, Create a
    'Copy' JMenuItem and use it in the Menu Bar and the JPopupMenu ... but it
    doesn't work! When I add a JMenuItem, which was previously added to the Menu
    Bar, to a JPopupMenu ... it disappear from de Menu Bar! Why?


    public class MainFrame extends JFrame{
    this thread is here...


    Applet-Servlet

    I have an Applet and a Servlet changing java objects derilized multiple times. After a few seconds the applet is started it stops. The applet is very easy, it has a thread that send and object and recieve another one and the servlet just the opposite. Anyone can help me?
    this thread is here...


    Meta_mask?

    I have a question when I use InputEvent in AWT. Several constants are defined in InputEvent, such as CTRL_MASK, SHIFT_MASK and META_MASK. Would you tell me what the META_MASK means? Thanks!
    this thread is here...


    use a dll (written in C) in java programm!

    Hi, I have a Frame_Grabber.dll written in C.
    How can I use this DLL in my java application?

    I know how to use java native interface, and to create my own dll, but what if the dll already exists? Should I create my own DLL in any case? Or I can use this FRAME_GRABBER.DLL directly and how pls??

    Does someone know it?
    this thread is here...


    Components are getting resized in gridbag layout.

    Hi,
    I am arranging components in gridbag layout. My parent container is JTabbedpane. But JTextFields (and others too) are getting resized depending on there contents. Can anyone help me in solving this problem.
    Thanks in advance, Shailesh
    this thread is here...

    Please ask your questions and help each other at our Java Forum:
    http://javafaq.nu/forum/


    The Java FAQ Daily Tips is a newsletter that is only sent to those who have specifically subscribed to it (double opt-in).

    To subscribe/unsubscribe to "The Java FAQ Daily Tips" weekly edition newsletter visit our page here:
    http://www.javafaq.nu/plm2html/my_subscription.shtml

    If you have troubles please contact us: subscription@javafaq.nu


    Link to Java FAQ

    If you have added a link to http://javafaq.nu on your WEB-site, please let us know and you will get listed on our
    "pages linking to us" pages! If your page is a programming is programming relates you will of course get listed in the WEB-directory as well. Also, if you link to us, you have a chance to be listed in this newsletter as well.

    More information and graphics artworks can be found here
    http://javafaq.nu/other/linktous.shtml


    Advertising

    For information on advertising on the Java FAQ's Daily Tips Newsletter, send an email to: adv@javafaq.nu
    You will get the answer immediately from auto responder!


    Send your comments, questions, praise and complaints to us: comments@javafaq.nu

    Copyright (c) 2000 - 2003 John Andersson, All rights reserved.



    4 comments | Printer Friendly Page  Send to a Friend | Java Newsletters | Score: 0
    Posted by jalex on Monday, February 02, 2004 (15:47:31) (3019 reads)

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