To view this page, you should have the most recent Java installed
32-bit JRE (Java Runtime Environment) 1.8.0_11.
This Applet will run online in your browser, but it is a hybrid you
can also download, install and run it on your own machine as standalone
application. It will start and run faster if you do that. It will also
work safely even if you have disabled Java in your browser.
Originally, a point was a unit of measure in the typesetting industry. A
printer’s point is 1/72.27 inch.
In PostScript a point is 1/72 of in an inch.
In Java, a point is one pixel width/height. If you had an old fashioned
low-resolution monitor with 72 dpi resolution, then a point would also mean 1/72 of
an inch. So when you ask for a 10 point Font in
Java, you don’t get what printers call a
10-point font. You get a font about 10 pixels high, which could be tiny or huge
depending on your monitor resolution.
In Java, with Graphics, a Point with a capital P, is a class
describing a location on the screen, or a location within a window relative to its
upper left corner, with an x and y coordinate. Points have two public
int fields x and y, however the getX and getY methods return doubles.
x is measured across from the left in pixels. y is measured down from the top in pixels.
In Java, with Graphics2D, a Point2D with a capital P, is a class
describing a location on the screen, or a location within a window in user-defined coordinates, which are
much more flexible. Using AffineTransform, you can transform the coordinates to go
in any direction you want and aren’t even necessarily orthogonal.
Point2D.Float that Point2D.Double are similar to Point,
but they store the x, y in
float and double
respectively. The strange dot in the name comes about because Float and Double are inner classes of
Here is what various point sizes look like on your screen in
HTML (Hypertext Markup Language) :
Here is what various point sizes look like on your screen in Java :
Java Requirements and Troubleshooting
If, PointSize, the above PointSize Java Applet (that can also be run as an application) does not work…
If Copy/Paste (Ctrl-C/Ctrl-V) do not work, you can turn them back on by
modifying your java.policy file. This is not for the novice or faint of heart. instructions
Your alternative is to download this program and run it without a browser.
Often problems can be fixed simply by clicking the reload button on your browser.
This Java Applet (that can also be run as an application) needs 32-bit or 64-bit Java 1.7 or later.
For best results use the latest 1.8.0_11.
In the Java Control Panel, configure medium security to allow vanilla unsigned applets to run.
It works under any operating system that supports Java e.g. W2K/XP/W2003/Vista/W2008/W7-32/W7-64/W8-32/W8-64/W2012/Linux/LinuxARM/LinuxX86/LinuxX64/Ubuntu/Solaris/SolarisSPARC/SolarisSPARC64/SolarisX86/SolarisX64/OSX
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:
Especially if this Applet hybrid has worked before, try clearing the browser cache and rebooting.
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.
If the above Applet hybrid does not work, check the Java console for error messages.
If the above Applet hybrid does not work, you might have better luck with the downloadable version available below.
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.
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.
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.
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.
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.
Try upgrading to a more recent version of your browser, or try a different browser e.g. Firefox, SeaMonkey, Safari or Avant.
If you still can’t get the program working click HELP for more detail.
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 at.