Is it worth using Java7, well if you feel a real need for something added, if you don't have a real need for the new language features then probably no.
I say the above because some may still be updating to Java7, I think the Mac comes with Java6 (well may be new Macs don't have it preinstalled but Apple have made it easy to get a JVM and for that case it is still Java6 I think). I think the Java7 release for the Mac is an early access or a non-production release and may be a bit harder to get.
Michael Whapples-----Original Message----- From: John J. Boyer
Sent: Sunday, March 11, 2012 1:54 AM To: brailleblaster@xxxxxxxxxxxxx Subject: [brailleblaster] Re: Braille Blaster and Java versions Vic, I'm surprissed that Java 7 isn't backward compatible with Java 6. It looks like the problem may be in the manifest, and could be an Ant problem. However, there are others on this list who are more knowledgeable. I know that some people are using your 32-bit version of BrailleBlaster 1.3.0. Hopefully someone knows of an easy fix. Questions for others. BrailleBlaster was written using Java 1.6, because that was what was available. Does Java 1.7 have features that would be useful to us? Would switching to Java 1.7 cause more compatibility problems? Thanks, John On Sat, Mar 10, 2012 at 07:30:18PM -0500, Vic Beckley wrote:
John,I am compiling Braille Blaster and the DLLs using version 7 of the Java JDK.I am having no problems with running what I compile on the same Javaversion. I just gave a copy of my 32-bit version to a friend to try out. Heis running Java version 6. It won't run. He gets the below error. I also tried it on my laptop, which also has Java 6, and got the same error. Exception in thread "main" java.lang.UnsupportedClassVersionError: org/brailleblaster/Main : Unsupported major.minor version 51.0 at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClassCond(Unknown Source) at java.lang.ClassLoader.defineClass(Unknown Source) at java.security.SecureClassLoader.defineClass(Unknown Source) at java.net.URLClassLoader.defineClass(Unknown Source) at java.net.URLClassLoader.access$000(Unknown Source) at java.net.URLClassLoader$1.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) Could not find the main class: org.brailleblaster.Main. Program will exit.Any ideas what would cause this? Will I have to compile with Java 6? If so,will it run on Java 7? Is anyone running my 32-bit Windows release of Braille Blaster 1.3.0 successfully? If so, what Java version do you have? Best regards from Ohio, U.S.A., Vic E-mail: vic.beckley3@xxxxxxxxx
-- John J. Boyer; President, Chief Software Developer Abilitiessoft, Inc. http://www.abilitiessoft.com Madison, Wisconsin USA Developing software for people with disabilities
