Quero Baixar O Java 32 Bits
Ted Brathwaite
Frink is a practical calculating tool and programming language designed to make physical calculations simple, to help ensure that answers come out right, and to make a tool that's really useful in the real world. It tracks units of measure (feet, meters, kilograms, watts, etc.) through all calculations, allowing you to mix units of measure transparently, and helps you easily verify that your answers make sense. It also contains a large data file of physical quantities, freeing you from having to look them up, and freeing you to make effortless calculations without getting bogged down in the mechanics.
While that page is the most detailed and constantly-updated source of information about changes in Frink, I also announce new features on Twitter at @frinklang. And if you want to follow Alan's personal ramblings for some reason, those are at @aeliasen.
To receive periodic notifications of general interest about the Frink language, please join the Frink mailing list. (Hosted by Yahoo! Groups. Link opens in new window.) This is a lower-traffic list, mostly for announcements.
For detailed discussions about particular programs, programming help, algorithms, and details of the Frink language, please join the Frink-discuss mailing list. (Hosted by Yahoo! Groups. Link opens in new window.) This is the appropriate place for posting programming questions and will probably be a higher-traffic list.
This list is intended to discuss problems in math, science, and physics and explore solutions using the Frink language.
Frink Science mailing list. (Hosted by Yahoo! Groups. Link opens in new window.)
You can read (and watch using RealPlayer) my presentation Frink -- A Language for Understanding the Physical World that I gave on Frink at the Lightweight Languages 4 conference at MIT. This discusses some of the design decisions of Frink, how it has evolved, implementation details, and future directions for the language.
If you want to try the calculations as you're reading, click here to open the web-based interface in a new window. The web-based interface gives hints for new users, which may make it the easiest way to learn how to use Frink.
If you have a frames-enabled browser, and you don't see a Frink sidebar to the left, you can also click here to try Frink in a sidebar as you read this. (The sidebar mode doesn't give as many hints, though.)
Quick Start: On many platforms, if you already have Java installed, you can start Frink in the GUI mode by simply downloading and double-clicking the frink.jar file. For more startup options, see the Downloading Frink section.
Another method of installation requires Java Web Start, which is installed with most versions of Java. Using Java Web Start is used to be a great way to run Frink if you don't need to run programs from the command-line. (But you can still write and run programs from the GUI using Java Web Start!) If you do want to run programs from the command-line, see the Downloading Frink section below. Java Web Start will allow you to automatically get the latest version of Frink and will update Frink automatically when new versions are available.
The best way to allow Frink to run is to follow the instructions listed here and add to the exceptions list in step 7. Note: As always, Java's instructions and installer are terrible, and the Java Control panel on Windows may actually be under your Start menu as Java Configure Java, or under your Windows Control Panel, or if you start your Control Panel and don't see it, Java's control panel will be hidden under "32-bit Control Panel." And sometimes you'll have multiple versions of Java installed and the one that gets started isn't the latest version. I had lots of problems until I manually uninstalled all the versions of Java on the Windows machine, reinstalled the latest version, and uninstalled Frink and reinstalled it. Sorry about that. Windows and Java integration is terrible. (The icedtea-web package for Fedora and other installations contains a vastly better implementation of Java Web Start.)
- Click one of the options below to install Frink: (see the screenshots below):
- Swing Interface Prettier. Requires Java 1.5.0 or later. Note: If your browser no longer supports Java in the browser, you can probably install this from the command-line by typing:
If you've read those security notes, and understood what the security messages are telling you, and the warnings are still too scary, (and you don't want to send me the $400 per year it would cost me to remove at least one of them,) and you'd rather download a limited version of Frink that runs in the most restrictive security sandbox (breaking some features), then click here to install a limited version of Frink. Again, please read those security notes to see what features will be unavailable if you choose this option. You can always get the full version of Frink later if you need those features.
If you have an old version of Java Web Start, Frink will probably show up in the "Downloaded Applications" section of the Java Web Start panel which isn't immediately visible. Use the View menu option to select the Downloaded Applications tab. It will also let you create a Frink shortcut on your desktop or in your start menu. The defaults in Java Web Start before version 1.4.2 are set oddly so that the second time you run Frink, it will ask you if you want to make a shortcut.
The Swing version allows mixed fonts and colors. Due to some performance bugs in Sun's Swing implementation (like large paragraphs taking several minutes to paint every time you resize or scroll,) it can be problematic. As of 2008-08-25, the capabilities of the Swing and AWT interfaces are about the same.
If your web browser supports Java 1.3.1 or later, try the Java Applet-based interface. It looks and works just like the GUI above, but it requires you to be connected to the internet and must download for each session. Your browser must support Java 1.3.1 or later, or you will need to get download a newer version of Java from Sun. It is extremely highly recommended that you have Java 1.5.0 update 2 or later. This has been tested with Internet Explorer, Netscape 4.x, Netscape 6+, Mozilla (Windows and Linux), and Opera.
(The certificate is just signed by me, so you'll get a warning. Network access is necessary to use the network portions of Frink... like currency calculations, translations, etc. If you deny network access, the non-network parts of Frink will work just fine. If someone wants to send me the $400 necessary to get a VeriSign "Code Signing Cerificate", I'll sign it just for you. It won't work any differently.)
In this web interface, you can enter any Frink expression in the "From:" box. If you also enter a value in the "To:" box, it is treated as the right-hand side of a conversion expression (that is, to the right of the conversion operator -> )
Thus, to convert 10 meters to feet, you can enter 10 meters in the "From" box and feet in the "To" box, or, equivalently, type 10 meters -> feet in the "From" box and leave the "To" box empty. It does exactly the same thing.
If you're just using Frink for interactive calculations, or are happy using the built-in programming mode and you're not writing running programs from the command-line, see the Java Web Start section above.
If you want to write full Frink programs and run them from the commmand-line, you will need to get your own copy of Frink, and have a Java 1.1 or later runtime environment on your machine, 1.4.2+ is recommended as it's less buggy. The date calculations in anything before Java 1.3 are rather bad,) you may download the latest executable jar file. (Note that this changes almost daily as I do more work, so download often.)
(Note that the Linux/Unix shell script above has the option to run with the rlwrap program, which gives you the ability to use the up/down arrows to repeat and edit calculations, and even perform unit and function completion! See the instructions inside that file for configuring rlwrap, and downloading the optional associated files: unitnames.txt and functionnames.txt)
In the samples below, you may need to replace java or javaw with the full path to your Java Virtual Machine, whatever that may be. Note that javaw is a Windows-only command that simply starts Java without opening a console window. You'll probably replace this with java on other platforms.
Depending on your operating system, I recommend that you write a shell script, batch file, or create a shortcut to let you run this even more easily (see below for samples.) To exit, use Ctrl-C, or send your platform's end-of-file character (usually Ctrl-Z or Ctrl-D), possibly followed by carriage return. Or just close the window.
If you just want to have Frink calculate something and exit, you can pass arguments on the command line using the -e [string] switch. Each command-line argument following the -e will be interpreted as a Frink expression, making it easy to run Frink from other applications:
The encoding is a string representing any encoding that your version of Java supports, e.g. "UTF-8", "US-ASCII", "ISO-8859-1", "UTF-16", "UTF-16BE", "UTF-16LE". Your release of Java may support more charsets, but all implementations of Java are required to support the above. The sample program encodings.frink also demonstrates how to list all of the encodings available on your system (and their aliases.)
For those who want a standalone, all-in-one Frink download, there is an experimental, unsupported version of Frink compiled for Windows only using an experimental, unreleased version of the GNU compiler for Java (GCJ). This only works in command-line mode, but requires no other downloads and may start up more quickly. It is appropriate for quick calculations and command-line scripts. Not all functions may work. Let me know about parts that do or don't work for you. It is compressed with UPX to reduce the file size (possibly at the cost of some startup time.) This version starts up more quickly than the Sun JVM, but runs programs about 5-6 times slower.
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