CMP Conversion Amanuensis  CMP Conversion Amanuensis

home page up Google search web for more information on this topic jump to foot of page translate this page with Babelfish ©1996-2012 Roedy Green, Canadian Mind Products
This view this page, you should have a recent Java installed, preferably 32-bit JRE (Java Runtime Environment) 1.7.0_02.
This Applet will help you write Java code. Instead of memorising the 361 conversion functions between the 19 basic types, just use this amanuensis to generate the code, then paste it into your source. The Converter Amanuensis is also available with Java source to download.
Sorry, you need Java 1.5 or later to run this Applet.
If the Applet does not work for you, try the 19 × 19 matrix crib sheet:
conversion table for Java 1.4-
conversion table for Java 1.5+
conversion: which includes notes on converting byte and char arrays
other downloads
moreinfo about the current version.
download source and executable to run this Applet on your own machine as a stand-alone application.

If, Converter, the above Converter signed Java Applet (that can also be run as an application) does not work…

  1. Often problems can be fixed simply by clicking the reload button on your browser.
  2. Make sure you have both JavaScript and Java enabled in your browser.
  3. This signed Java Applet (that can also be run as an application) needs 32-bit (not 64-bit) Java 1.5 or later. For best results use the latest 1.7.0_02. If you have both 32 and 64-bit JVMs installed, in the Java Control Panel, configure your 32-bit java.exe as the user JVM and your 64-bit java.exe as the system JVM. You also need a recent browser.
  4. It works under any operating system that supports Java e.g. W2K/XP/W2003/Vista/W7-32/W7-64/Linux/OSX
  5. You should see the Applet hybrid above looking much like this screenshot. If you don’t, the following hints should help you get it working:
  6. For this Applet hybrid to work, you must click grant/accept to give it permission to let you copy/paste. If you refuse to grant permission, the program may crash with an inscrutable stack dump on the console complaining about AccessController.checkPermission.
  7. Optionally, you may permanently install the Canadian Mind Products code-signing certificate so you don’t have to grant each time.
  8. If the above Applet hybrid appears to freeze-up, click Alt-Esc repeatedly to check for any buried permission dialog box.
  9. If you have certificate troubles, check the installed certificates and remove or update any obsolete or suspected defective certificates. The only certificate used by this program is mindprodcert2012dsa.cer.
  10. Especially if this Applet hybrid has worked before, try clearing the browser cache and rebooting.
  11. To ensure your Java is up to date, check with Wassup. First, download it and run it as an application independent of your browser, then run it online as an Applet to add the complication of your browser.
  12. If the above Applet hybrid does not work, check the Java console for error messages.
  13. If the above Applet hybrid does not work, you might have better luck with the downloadable version available below.
  14. If you are using Mac OS X and would like an improved Look and Feel, download the QuaQua look & feel from randelshofer.ch/quaqua. UnZip the contained quaqua.jar and install it in ~/Library/Java/Extensions or one of the other ext dirs.
  15. If you are using Microsoft Internet Explorer 7, 8 or 9, try another browser. Seriously. Microsoft has taken great pains, over and over, to screw up Java and every other multi-platform standardisation.
  16. If you are using Microsoft Internet Explorer 7, 8 or 9, you must click to allow blocked content permission for Active X to run. This also gives permission to Java to run. Click the Information bar, and then click Allow blocked content. Unfortunately, this also allows dangerous ActiveX code to run. However, you must do this in order to get access to perfectly-safe Java Applets running in a sandbox. This is part of Microsoft’s war on Java. Don’t put up with it! Use a different browser.
  17. If you are using Microsoft Internet Explorer 9, makes sure the Java Plug-In SSV helper add-in is installed and enabled. If it is not, try reinstalling the Java JRE.
  18. If you have Windows 7 64-bit and Internet Explorer 64-bit, in theory you can use 64-bit Java, but I never been able to get it to work.
  19. Try upgrading to a more recent version of your browser, or try a different browser e.g. Firefox, SeaMoney, Safari or Avant.
  20. If you still can’t get the program working click HELP for more detail.
  21. If you can’t get the above Applet hybrid working after trying the advice above and from the HELP button below, have bugs to report or ideas to improve the program or its documentation, please send me an email atemail Roedy Green.
Java powered   Get New Java  Get New Browser   Help

Primitives

Primitive variables include boolean, char, byte, short, int, long, float and double. Strings, arrays and Objects are not considered primitives.
Java Primitives
Type Signed? Bits Bytes Digits Lowest Highest Mnemonic
boolean n/a 1 1 1 false true zero/one
char unsigned Unicode 16 2 4:5 '\u0000' [0] aka Character. MIN_VALUE '\uffff' [216-1] aka Character. MAX_VALUE Unicode chars are twice as big as C’s.
byte signed 8 1 2:3 -128 [-27] aka Byte. MIN_VALUE +127 [27-1]aka Byte. MAX_VALUE Bytes are signed, so half the usual 255 range.
short signed 16 2 4:5 -32,768 [-215] aka Short. MIN_VALUE +32,767 [215-1] aka Short. MAX_VALUE 32K
int signed 32 4 9:10 -2,147,483,648 [-231] aka Integer. MIN_VALUE +2,147,483,647 [231-1] aka Integer. MAX_VALUE 2 gig
long signed 64 : 9,223,372,036,854,775,807 [-263] aka Long. MIN_VALUE -9,223,372,036,854,775,808 [263-1] aka Long. MAX_VALUE 9 exabytes, or billion gig
float signed exponent and mantissa : ±1.40129846432481707e-45 aka Float. MIN_VALUE ±3.40282346638528860e+38 aka Float. MAX_VALUE
or roughly ±2127
with to significant digits of accuracy.
A float can exactly represent integers
in the range -224 to +2 24.		 rough, compact float
double signed exponent and mantissa : ±4.94065645841246544e-324 aka Double. MIN_VALUE ±1.79769313486231570e+308 aka Double. MAX_VALUE
or roughly ±21023
with to significant digits of accuracy.
A double can exactly represent integers
in the range -253 to +2 53.		 high precision float

Primitives vs Immutable Wrapper Objects

Contrast that table of primitives, with this table of basic Java types:
Mutable Primitives Immutable Objects
boolean Boolean
ordinary signed byte Byte
unsigned byte Byte
short Short
char Character
int Integer
long Long
float Float
double Double
char[] String
PackageVersionReleasedLicenceLanguageNotes 
converter
Converter		 5.5 2011-12-30 free Java
more info ❘ precis ❘ screenshot ❘ browse source repository
for the current version of Converter.
Show you how to write Java conversion code, e.g. String to double.
download 1,373K zip for Converter Java source, compiled class files, jar and documentation to run on your own machine either as an application or an Applet.

First install the most recent Java.

To install, extract the zip download with WinZip, (or similar unzip utility) into any directory you please, often J:\ — ticking off the use folder names option.

To check out the corresponding source from the Subversion repository, use the TortoiseSVN repo-browser to
access converter source in repository with [Tortoise] Subversion client on wush.net/svn/mindprod/com/mindprod/converter/.

After you have installed the jar, you can run it as an application. Type:

java -jar J:\com\mindprod\converter\converter.jar

adjusting as necessary to account for where the jar file is.

download ASP PAD XML program description for the current version of Converter.

Converter is free.
$489.00 US donated so far. If the CMP utilities solved your problem, please donate a buck or two, or donate to one of the charities featured in the footer public service ads throughout the website and get a tax receipt.
Full source included. You may even include the source code, modified or unmodified in free/commercial open source/proprietary programs that you write and distribute. Non-military use only.
  
 
Comparable/Comparator Cutter Amanuensis
conversion table for Java 1.4-
conversion table for Java 1.5+
conversion: which includes byte and char arrays
DecimalFormat
File I/O Amanuensis
hex
other downloads
Quoter Amanuensis
CMP homejump to top You can get the freshest copy of this page from: or possibly from your local J: drive (Java virtual drive/mindprod.com website mirror)
http://mindprod.com/applet/converter.html J:\mindprod\applet\converter.html
logofeedback Please email your feedback for publication, letters to the editor, errors, omissions, typos, formatting errors, ambiguities, unclear wording, broken/redirected link reports, suggestions to improve this page or comments to Roedy Green : feedback email If you want your message kept confidential, not considered for posting, please explicitly specify that.
mindprod.com IP:[65.110.21.43]
view BlogYour face IP:[38.107.179.214]
You are visitor number 153,535.