Sun JVM 1.4.2_8 doesn't work with FC4

[Brian G. Anderson]

Sorry I included the wrong stack trace.  It should have been:

> java.net.SocketException: Invalid argument or cannot assign requested 
> address
>         at java.net.PlainSocketImpl.socketConnect(Native Method)
>         at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:305)
>         at 
> java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:171)
>         at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:158)
>         at java.net.Socket.connect(Socket.java:452)
>         at java.net.Socket.connect(Socket.java:402)
>         at java.net.Socket.<init>(Socket.java:309)
>         at java.net.Socket.<init>(Socket.java:153)
>         at SocketTest.main(SocketTest.java:18)




Brian G. Anderson wrote:

> I have installed suns java 1.4.2_08 and 1.5.0_7 using jpackage.  I 
> have been using the alternatives command to switch between them.  In 
> using 1.4.2 I have run across the following problem where a java 
> program cannot bind to a socket.  I have attached the following simple 
> test class to show what is going on.
>
> 1. compile this class using javac1.4
> 2. if you execute it using java 1.4 you will get the following 
> exception :
>
>> Exception in thread "main" java.lang.UnsupportedClassVersionError: 
>> SocketTest (Unsupported major.minor version 49.0)
>>         at java.lang.ClassLoader.defineClass0(Native Method)
>>         at java.lang.ClassLoader.defineClass(ClassLoader.java:539)
>>         at 
>> java.security.SecureClassLoader.defineClass(SecureClassLoader.java:123)
>>         at java.net.URLClassLoader.defineClass(URLClassLoader.java:251)
>>         at java.net.URLClassLoader.access$100(URLClassLoader.java:55)
>>         at java.net.URLClassLoader$1.run(URLClassLoader.java:194)
>>         at java.security.AccessController.doPrivileged(Native Method)
>>         at java.net.URLClassLoader.findClass(URLClassLoader.java:187)
>>         at java.lang.ClassLoader.loadClass(ClassLoader.java:289)
>>         at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:274)
>>         at java.lang.ClassLoader.loadClass(ClassLoader.java:235)
>>         at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302)
>
>
> 3.  If you execute it using the java 1.5 jvm the program will 
> successfully print the first few bytes of the ssh intro message it 
> prints on port 22 upon first connection.
>
> Its very strange because most everything else about Java seems to 
> work:  IO, swing, etc.  In fact the first time I saw this problem 
> (though I didn't realize it at the time) was when I ran LimeWire under 
> java 1.4:  the UI comes up and everything seems to work, but it never 
> seems to connect to the network.  After realizing what the problem 
> might be I restarted LimeWire under 1.5 and it connects fine.
>
> So 1.4.2 has some problem with binding to sockets.  Now one might just 
> advise me to use 1.5, but I have a large set of programs that only 
> compile under 1.4 (syntax changes due to enum).  The '-source=' 
> argument to javac also doesn't work for me.  My current solution is to 
> have the java_sdk alternative set to 1.4 and the java alternative to 
> 1.5, but this is very awkward.
>
> My questions to the community are:
> 1.  are others seeing this behavior with 1.4.2?
> 2.  any idea on how to fix it?
> 3.  any better solution on how to mix a 1.4.2 compiler with a 1.5 JVM
>
> Thanks,
>
> Brian
>
>