The VM version:
D:\Software Originals>java -version
java version "1.3.0"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0-C)
Java HotSpot(TM) Client VM (build 1.3.0-C, mixed mode)
Installation command as specified in the installation instructions. Note: Even though the Hot Spot VM does not support setting the "java.compiler" property, I included it to be consistent with the installation instructions.
D:\Software Originals>java -Djava.compiler=none -jar jedit-2.5final.jar
Java HotSpot(TM) Client VM warning: Setting of property "java.compiler" is ignored
count = 0, total = 38
Exception in thread "main" java.util.zip.ZipException: invalid CEN header (bad signature)
at java.util.zip.ZipFile.open(Native Method)
at java.util.zip.ZipFile.<init>(Unknown Source)
at java.util.jar.JarFile.<init>(Unknown Source)
at java.util.jar.JarFile.<init>(Unknown Source)
I also downloaded 2.6pre1-2 and encountered the same exception.
D:\Software Originals>java -Djava.compiler=none -jar jedit-2.6pre1-2.jar
Java HotSpot(TM) Client VM warning: Setting of property "java.compiler" is ignored
count = 0, total = 38
Exception in thread "main" java.util.zip.ZipException: invalid CEN header (bad signature)
at java.util.zip.ZipFile.open(Native Method)
at java.util.zip.ZipFile.<init>(Unknown Source)
at java.util.jar.JarFile.<init>(Unknown Source)
at java.util.jar.JarFile.<init>(Unknown Source)
Addendum:
jedit2.5pre6 installs just fine.
The mime-type of .jar files has been fixed, so this shouldn't be a problem any more.