If you want to open this jar, you’d better rename it as a zip, then you will find the S.class and manifest.txt files into it, and you shouldn’t get a “corrupt file” message.
If you want to launch the game within this jar, you must do it from a html file that will execute it as an applet. Here is the code for my own “index.htm” launcher :
<html>
<head>
<title>
Space Paranoids 2D4K version 1.00
</title>
</head>
<body>
<center>
Space Paranoids 2D4K version 1.00 will appear below in a Java enabled browser.
<applet
codebase = "."
code = "S.class"
name = "Space Paranoids 2D4K"
archive="S.jar"
width = "500"
height = "500"
hspace = "0"
vspace = "0"
align = "middle"
>
</applet>
Click once on the game window to activate it.
Use [Left] and [Right] to steer, [Up] and [Down] to accelerate and reverse,
[C] and [V] to turn the turret and [X] to shoot.
<a href="SpaceParanoids2D4K.jnlp">Launch Space Paranoids 2D4K through JNLP</a>
</body>
</html>
And here is the code of the “SpaceParanoids2D4K.jnlp” file, not necessary at all to launch the applet but so you’ll have all the files which are on my website :
<?xml version="1.0" encoding="utf-8"?>
<jnlp
spec="1.0+"
codebase="http://stephr.110mb.com"
href="http://stephr.110mb.com/SpaceParanoids2D4K.jnlp">
<information>
<title>Space Paranoids 2D4K</title>
<vendor>StephR</vendor>
<homepage href="http://stephr.110mb.com"/>
<description kind="short">Space Paranoids 2D4K</description>
<offline-allowed/>
</information>
<security>
</security>
<resources>
<j2se version="1.5+"/>
<jar href="S.jar"/>
</resources>
<applet-desc
documentBase="http://stephr.110mb.com/"
name="S"
main-class="S"
width="500"
height="500">
</applet-desc>
</jnlp>