Folks,
I am at an impasse in deciding if it is worth taking the time to get a Java development environment setup on FC5 for the simple reason that FC5 recommends using their NATIVE ports instead of using the "normal" download apps such as Sun's software, Eclipse's software and so on. The confusion lies in not knowing what course of action to take coupled with the FC5 caveat that by not using the FC native ports and properly installing Java applications may break your work on Java. This caveat alone stops me from considering FC5 as a serious contender for a Java development platform.
On top of all of this, FC5's Java porting time-line plans states that there are some serious work needed to get it all working right (Swing/AWT, others?) so it seems to me that FC5 is just not ready for a serious Java programming development environment and who knows when and if it will be ready?
Can anyone give me some pointers on how to get a serious Java development environment setup going? I want to have full flexibility to download and install Eclipse tools and applications without being unencumbered with Fedora's port version preventing such operations, for example if I need to get RCP, WSP, Swing, AWT, and the zillions of other things that are rapidly being released by the Eclipse community.
BTW: I have already visited the Fedora Java Wiki site (http://www.fedoraproject.org/wiki/JavaFAQ) and (http://www.jpackage.org/) but it is not "HOW TO" setup your Java development environment.
So... how can I proceed?
Totally confused, Dan
Dan Thurman wrote:
Can anyone give me some pointers on how to get a serious Java development environment setup going? I want to have full flexibility to download and install Eclipse tools and applications without being unencumbered with Fedora's port version preventing such operations, for example if I need to get RCP, WSP, Swing, AWT, and the zillions of other things that are rapidly being released by the Eclipse community.
It takes a little work, but it can be done. For a 100% "real" Java environment, you'll first want to remove all the gcj-compiled packages from your system. The vast majority of these can be identified with:
rpm -qa | egrep 'jpp|eclipse'
Removing these packages should identify any other gcj packages.
(Note that you probably don't want to remove the gcj/gij runtime, because OpenOffice.org uses it.)
Now ensure that you won't actually pull any of these packages from the Fedora yum repositories by adding the following line to all of the fedora* files in /etc/yum.repos.d:
exclude=*jpp* eclipse*
Now you can set up the JPackage yum repositories as described on the JPackage site. I recommend adding the following line to all three repositories in jpackage.repo:
exclude=postgresql*
Good luck!
Ian Pilcher writes:
Dan Thurman wrote:
Can anyone give me some pointers on how to get a serious Java development environment setup going? I want to have full flexibility to download and install Eclipse tools and applications without being unencumbered with Fedora's port version preventing such operations, for example if I need to get RCP, WSP, Swing, AWT, and the zillions of other things that are rapidly being released by the Eclipse community.
It takes a little work, but it can be done. For a 100% "real" Java environment, you'll first want to remove all the gcj-compiled packages from your system.
What for? They will still work.
Install whatever runtime environment you want via an RPM from jpackage.org and use /usr/sbin/alternatives to switch to it.
Andrew.
Andrew Haley wrote:
Ian Pilcher writes:
It takes a little work, but it can be done. For a 100% "real" Java environment, you'll first want to remove all the gcj-compiled packages from your system.
What for? They will still work.
I think it's more accurate to say that they *should* work. The OP expressed some concern about this.
Install whatever runtime environment you want via an RPM from jpackage.org and use /usr/sbin/alternatives to switch to it.
I've done this on Fedora Core 5, and everything is working so far.
Nice work!
On 4/1/06, Ian Pilcher wrote:
Andrew Haley wrote:
Ian Pilcher writes:
It takes a little work, but it can be done. For a 100% "real" Java environment, you'll first want to remove all the gcj-compiled packages from your system.
What for? They will still work.
I think it's more accurate to say that they *should* work. The OP expressed some concern about this.
Depending on what you want to do with them, they do work. The rebuilt JAR files include all the normal java class files that Sun/IBM/BEA java need, but also the native stuff for gcj. See, for example:
https://www.zarb.org/pipermail/jpackage-discuss/2005-October/008918.html
So there is no need to remove gcj-compiled packages.
Install whatever runtime environment you want via an RPM from jpackage.org and use /usr/sbin/alternatives to switch to it.
This certainly works. What I currently recommend to devs using eclipse here is to download the latest eclipse and run it from their home directory (so if you might remove the gcj native ecplise so /usr/bin/eclipse doesn't confuse them, but that's optional). I recommend that because eclipse is still somewhat picky about where it finds things, and if (for example) a dev installs the WTP plugin, eclipse is going to download everything to their home directory anyway. In this sense the /usr/share/java/ jars don't "work" but that's not JPackage or Fedora's fault, it's an Eclipse platform decision. Someday it might get all smoothed out.
Folks,
I have pretty much downloaded just about everything I have needed to get back to the development level I wanted when I was using Eclipse under the windoes environment but I have encountered some strange situations so here it is...
[ Note: I followed recommendations per Paul Howarth's JPackage installation guidelines so as not to blow apart the gcj (native) java port. ]
Success: ======== 1) Installed SubEclipse successfully and it appears for all users. 2) Installed GEF and EMF successfully and it appears for all users. 3) Installed PhpEclipse successfully and it appears for all users.
Unknown: ======== 1) Downloaded and installed JEM, but I was not able to determine if the package was installed successfully as it does not appear in the configuration list for "Manage Configurations". I do note however JEM (Java EMF Model) does appear listed in the 'About Eclipse' feature listings. I assume all is well but cannot confirm this. GEF, EMF, and JEM is required for WST.
Problems: ========= 1) As any user (root and non-root), I am unable to uninstall any older plugins (or packages). I was trying to remove pyDev 0.9.3 because a newer version of pyDev 0.9.8.7 supersedes it and the 'uninstall' menu item refuses to appear for selection. I got this new update via the Help->Software Updates->Find and Install... Please note that the update for 'Change Logs' was a very weird one and it causes problems if you try to update this one. Someone should probably remove this unless it is really needed?
2) Downloaded and installed WTP 1.0.1 as root user (login) and it was installed into /usr/share/eclipse. When I brought up eclipse, I noticed that the JSEE (WTP) was not within the IDE, so I proceed to the Help->Software Updates->Manage Configurations, and enabled the 'Show disabled features', WTP appeared but was not enabled. Ok... then I enabled it, and closed Eclipse and brought it back up and added the J2EE perspective and all seems to be there. Haven't tried to see if J2EE works at this point.
Now here is the weird part. I logged out as 'root' user from Gnome, logged in as myself, and started up Eclipse. This is a first-time eclipse start-up. Ok, proceeding, I wanted to add the J2EE perspective but it wasn't there. Hmm... ok, then I again selected Help->Software Updates-> Manage Configurations and this time I note the following is not enabled:
1) J2EE for standard tools (JST) SDK 1.0.1.v200602130105 2) SDK for Web Standard Tools (WST) 1.0.1.v200602130105
I tried to enable these plugins but now for (1), a message pops up:
"The requested operation could not be performed because it will invalidate the configuration. See details for more information."
Details: Requested operation cannot be performed because it would invalidate the current configuration. See details for more information. J2EE Standard Tools (JST) SDK (1.0.1.v200602130105) The site is not updateable: file:/usr/share/eclipse/. J2EE Standard Tools (JST) (1.0.1.v200602130105) requires feature "org.eclipse.wst". JST Common Feature (1.0.1.v200602151554) requires feature "org.eclipse.wst.common_core.feature (1.0.0)", or equivalent. JST Server Core Feature (1.0.1.v200602151554) requires feature "org.eclipse.wst.server_core.feature (1.0.0)", or equivalent. JST Web Core Feature (1.0.1.v200602151554) requires feature "org.eclipse.wst.web_core.feature (1.0.0)", or compatible. JST Enterprise Core Feature (1.0.1.v200602151554) requires feature "org.eclipse.wst.ws_core.feature (1.0.0)", or compatible. JST Enterprise UI Feature (1.0.1.v200602151554) requires feature "org.eclipse.wst.rdb_core.feature (1.0.0)", or equivalent.
So - Eclipse refuses to allow me to enable these plugins. I went one step further: I added a eclipse user group, changed the group ownership to eclipse, and added group read-write-execute and the problem still remains. I am not able to continue any further on enabling J2EE. I cannot even uninstall it either.
3) The same/similar problem appears for these plugins: a) RMI plugins for Eclipse 1.6.5.4
Please let me know if there is anything I can do at this point.
Kind regards, Dan
On Mon, 2006-04-03 at 11:41 -0700, Dan Thurman wrote:
Sorry to top-post and to reply to my own reporting...
I have resolved all the issues pointed out below. Turns out that I had to enable all of the aforementioned items in regards to completing the WST installation my starting eclipse in the root user account and enabling the (1), (2), and (3) items below, all the non-root users have access to these plugins. Also, I note that if there are any updates for Eclipse, if root user hadn't already updated all items, all users who attempt to update would get the update items installed into their own home .eclipse folders. Can be a pain in regards to code bloat... but I also figured out that blowing the user's .eclipse directories is not a problem assuming that no other user-installs were made outside of that of what root is updating. Other than that - so far it appears everything works well.
As for the ChangeLog updates and for deleting older versions, I am still not able to do it even as a root user. Perhaps this is a minor issue but perhaps you can manually delete the items in question but this may tend to be error prone.
Dan
Folks,
I have pretty much downloaded just about everything I have needed to get back to the development level I wanted when I was using Eclipse under the windoes environment but I have encountered some strange situations so here it is...
[ Note: I followed recommendations per Paul Howarth's JPackage installation guidelines so as not to blow apart the gcj (native) java port. ]
Success:
- Installed SubEclipse successfully and it appears for all users.
- Installed GEF and EMF successfully and it appears for all users.
- Installed PhpEclipse successfully and it appears for all users.
Unknown:
- Downloaded and installed JEM, but I was not able to determine if the package was installed successfully as it does not appear in the configuration list for "Manage Configurations". I do note however JEM (Java EMF Model) does appear listed in the 'About Eclipse' feature listings. I assume all is well but cannot confirm this. GEF, EMF, and JEM is required for WST.
Problems:
As any user (root and non-root), I am unable to uninstall any older plugins (or packages). I was trying to remove pyDev 0.9.3 because a newer version of pyDev 0.9.8.7 supersedes it and the 'uninstall' menu item refuses to appear for selection. I got this new update via the Help->Software Updates->Find and Install... Please note that the update for 'Change Logs' was a very weird one and it causes problems if you try to update this one. Someone should probably remove this unless it is really needed?
Downloaded and installed WTP 1.0.1 as root user (login) and it was installed into /usr/share/eclipse. When I brought up eclipse, I noticed that the JSEE (WTP) was not within the IDE, so I proceed to the Help->Software Updates->Manage Configurations, and enabled the 'Show disabled features', WTP appeared but was not enabled. Ok... then I enabled it, and closed Eclipse and brought it back up and added the J2EE perspective and all seems to be there. Haven't tried to see if J2EE works at this point.
Now here is the weird part. I logged out as 'root' user from Gnome, logged in as myself, and started up Eclipse. This is a first-time eclipse start-up. Ok, proceeding, I wanted to add the J2EE perspective but it wasn't there. Hmm... ok, then I again selected Help->Software Updates-> Manage Configurations and this time I note the following is not enabled:
- J2EE for standard tools (JST) SDK 1.0.1.v200602130105
- SDK for Web Standard Tools (WST) 1.0.1.v200602130105
I tried to enable these plugins but now for (1), a message pops up:
"The requested operation could not be performed because it will invalidate the configuration. See details for more information."
Details:
Requested operation cannot be performed because it would invalidate the current configuration. See details for more information. J2EE Standard Tools (JST) SDK (1.0.1.v200602130105) The site is not updateable: file:/usr/share/eclipse/. J2EE Standard Tools (JST) (1.0.1.v200602130105) requires feature "org.eclipse.wst". JST Common Feature (1.0.1.v200602151554) requires feature "org.eclipse.wst.common_core.feature (1.0.0)", or equivalent. JST Server Core Feature (1.0.1.v200602151554) requires feature "org.eclipse.wst.server_core.feature (1.0.0)", or equivalent. JST Web Core Feature (1.0.1.v200602151554) requires feature "org.eclipse.wst.web_core.feature (1.0.0)", or compatible. JST Enterprise Core Feature (1.0.1.v200602151554) requires feature "org.eclipse.wst.ws_core.feature (1.0.0)", or compatible. JST Enterprise UI Feature (1.0.1.v200602151554) requires feature "org.eclipse.wst.rdb_core.feature (1.0.0)", or equivalent.
So - Eclipse refuses to allow me to enable these plugins. I went one step further: I added a eclipse user group, changed the group ownership to eclipse, and added group read-write-execute and the problem still remains. I am not able to continue any further on enabling J2EE. I cannot even uninstall it either.
- The same/similar problem appears for these plugins: a) RMI plugins for Eclipse 1.6.5.4
Please let me know if there is anything I can do at this point.
Kind regards, Dan
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