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CreditCard Validator 1.8 (Downloads: 404)
Verifies that credit card number is valid. The CreditCard Validator will help you tell:
1. if a credit card number is valid,
2. which credit card vendor handles that number.
It is a simple Applet to demonstrate the use of the ValidateCreditCard class.
It validates the prefix and the checkdigit. It does *not* contact the credit card company to ensure that number has actually been issued and that the account is in good standing.
It will also tell you which of ...
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FileTimes 1.9 (Downloads: 265)
Read and set Windows file/dir times from Java: Create/LastModified/LastAccessed Java class library to get/set file and directory times: Create/LastModified/LastAccessed. For Windows only.
Create time is when the file was first written. Modified
time (sometimes called lastModified) is when the file was
last written. Accessed time is when the file was last read
or written. Checking its date, looking at its attributes or
checking to see if it exists does not count as reading it.
Get/Set Windows Fil...
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FontShowerAWT 2.9 (Downloads: 331)
Displays all the fonts available to AWT in Java. Displays all the fonts available to AWT in Java on your
machine. Displays the fonts in a variety of styles, sizes
and colours, rendered either with a Canvas or with a TextArea.
FontShowerAwt displays the fonts available on *your* machine
to *Java*. Other people will have different fonts installed
and will see different selections available to Java on
their machines. Your browser will see a slightly different
set of fo...
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FileIO 6.1 (Downloads: 589)
Generates sample Java code to do 617 types of I/O. I/O teaching tool that generates sample Java source code to read or write the console, a sequential file, a random access file, a String, an array of characters, an array of bytes, URL, HTTP CGI GET/POST, Socket, resource or Pipe. It shows you how to read or write ASCII-8 bit characters (plain or locale-encoded), Unicode 16-bit characters, raw bytes, big endian binary, little endian binary, or serialised objects, buffered, unbuffered or gzip compressed.
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Wavelength 1.3 (Downloads: 270)
Wavelength creates Color objects given the light wavelength or the frequency Wavelength creates Color objects given the wavelength or
the frequency of the light rather than the usual RGB or HSB.
instead of:
Color c = new Color(255, 0, 0);
use the frequency in nanometers, and gamma 0.0. .. 1.0.
(gamma is intensity/brightness.)
Color c = Wavelength.wvColor( 400.0f, 0.80f );
The visible range of the spectrum is 380..780 nanometers.
Smaller is bluer.
or using frequency in Terahe...
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RadixSort 1.6 (Downloads: 220)
RadixSort is a fast internal sort written in Java that mimics a card sorter. RadixSort is a fast internal sort written in Java that
mimics a card sorter. Source provided. It is faster than
both HeapSort and QuickSort. It sorts using a comparision
routine you provide to compare two elements to be sorted
plus a method to extract individual bytes from the keys to
be sorted. The time to sort each item unlike most sorts,
does not increase with larger sorts. It depends rather on
the key length.
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Masker 1.9 (Downloads: 291)
Hides email addresses from spammers as PNG image files. Produces PNG files (image files similar to GIFs, but
smaller) that contain your email address. When you post them
on your website, it is harder for spammer to harvest them.
You can include the generated image files in the HTML on
your website with: code like this:
[a href="../image/mailto/roedy.png"]email me[/a]
(pretend [] are angle brackets)
or
[mg src="image/mailto/r...
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HunkIO 1.7 (Downloads: 263)
Java classes to readEntireFile, create a temp file etc. Java classes to include in your own programs. They let you read or write a file in one fell swoop into RAM. It also includes createTempFile method that is more convenient to use than Sun's File.createTempFile. It also includes PrintWriterPlus that converts linefeeds to platform specific line feeds even when they are embedded in data.
Why the three linked ball logo? It symbolises processing a file in line-sized chunks....
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Official Encoding 1.1 (Downloads: 175)
Discover the official name of any given Java encoding. Official Encoding will tell you the official name of any given Java encoding and whether it is supported by Java. It will also display some of the characters available with that encoding.
Prerequisites:
This program runs under any OS,
(e.g. Win2K/XP/Vista/OSX/Linux/Solaris/Vista64/AIX...) so long as you have
Java version 1.5 or later installed.
Installing:
Download source and compiled class files to run...
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Biorhythms Calculator 2.7 (Downloads: 935)
Calculates and displays biorhythm graphs. Calculates and displays biorhythm graphs.
Enter your birthdate and this Applet and it will calculate
your biorhythms. It computes your 23-day physical, 28-day
emotional, 33-day intellectual and combined cycles. The
combined cycle is sometimes called the luck cycle. The
theory of biorhythms is when the cycles are positive/high
you will have high energy. When they are negative/low you
will have low energy. When they...
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CSV 6.5 (Downloads: 1015)
Java to read, write, align, sort, reshape, pack... comma, tab-separated files. Java classes you can use standalone or embed in your own programs to
Read, write, align, sort and pack comma, tab and semicolon-
separated variable files, commonly known as CSV files.
It consists of a 23 Java classes/utilities CSVReader, CSVWriter, CSVAlign, CSVChangeCase, CSVCondense, CSVDeDup, CSVDeDupField, CSVDeEntify, CSVDump, CSVEntify, CSVPack, CSVPatch, CSVReshape, CSVSort, CSVSortField, CSVTabToComma, CSVTemplate, CSVToHTML, CSVToS...
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FontSaver 1.4 (Downloads: 250)
FontSaver shares Font objects instead of creating new ones. FontSaver shares Font objects instead of creating new ones to cut
down on the RAM and time needed to create Font and Font peer objects.
Profiling often shows the creation of too many Font objects is the
cause of poor performance.
See the source code for how to incoporate it into your own programs.
It does nothing on its own....
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JarLook 1.2 (Downloads: 312)
Check that class target versions are as expected in a Java jar. Check a Java jar to make sure all the javac -target versions of
the class files are what you expect.
Java application.
Requires Java version 1.5 or later.
All Java source code is included.
to use:
java -jar jarlook.jar jartotocheck.jar 1.1 1.4
where jartocheck.jar is the name of jar to check.
It will check all the class files in it.
In this example:
1.1 is the low...
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Encoding Recogniser 1.2 (Downloads: 211)
Help determine a file's encoding by displaying it wth all supported encodings. Encoding Recogniser will help you determine what encoding was
used to write a file by displaying the file in hex or and
decoded characters in any of the encodings supported by
Java.
This program runs under any OS,
(e.g. Win2K/XP/Vista/OSX/Linux/Solaris/Vista64/AIX...) so long as you have
Java version 1.5 or later installed.
To install, Extract the zip download with WinZip (or similar unzip utility) into ...
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Primes 1.4 (Downloads: 480)
calculates the prime numbers 1..N, tells you if N is prime etc. calculates the prime numbers 1..N, tells you if N is prime etc.
Prints tables of primes.
Computes the prime just below or above N.
It is useful in computing optimal Hashtable sizes.
Java source included....
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Tabout 2.7 (Downloads: 231)
converts tabs to spaces in an ASCII text file. converts tabs to spaces in an ASCII text file
usage : TABOUT Myfile.TXT
Don't use it on word processor files. Assumes tab stops
are 8 columns apart. Also trims ^Z and corrects any
malformed CrLf line endings. C source included.
Copyrighted, but may be distributed freely and used for
any purpose except military....
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HeapSort 1.7 (Downloads: 246)
HeapSort is an implementation of Williams and Floyd classic HeapSort. HeapSort is an implementation of Williams and Floyd's TopDown HeapSort.
HeapSort is a fast internal sort written in Java that uses a
sorting algorithm analogous to power struggles for higher
positions in a hierarchical bureaucracy. Source provided. It
is faster than QuickSort, but slower that RadixSort. It
sorts using a comparison routine you provide to compare two
elements to be sorted.
You can test it with:
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