Problem with Java after System Upgrade to 10.5.7

Question

Hi,
I am facing problem with Java after having run Software upgrades.
Here is the whole story. I recently moved to iMac 10.5.6 from PowerPc 10.4. On this new machine I was having problem running a 3rd party application, which requires JVM. As this application worked well on Tiger, I decided to upgrade JVM on my iMAC using Software Upgrade(was I insane!!). As I like my systems to be updated (as with linux on my personal machine) I clicked "install all". As a result I have the following upgrades run on my machine:
2009-05-20 13:12:01 +0200: Installed "Mac OS X Update Combined" (10.5.7)
2009-05-20 13:12:10 +0200: Installed "Remote Desktop Client Update" (3.2.2)
2009-05-20 13:12:26 +0200: Installed "Java For Mac OS X 10.5 Update 2" (1.0)
2009-05-20 13:58:36 +0200: Installed "Java for Mac OS X 10.5 Update 3" (1.0)
2009-05-20 13:58:44 +0200: Installed "AirPort Utility Software Update 2009-001" (5.4.1)
2009-05-20 13:59:07 +0200: Installed "QuickTime" (7.6)
2009-05-20 13:59:22 +0200: Installed "iPhoto Update" (7.1.5)
2009-05-20 13:59:28 +0200: Installed "iLife Support" (9.0.2)
2009-05-20 13:59:38 +0200: Installed "iDVD Update" (7.0.3)
2009-05-20 13:59:58 +0200: Installed "iTunes" (8.1.1)
But now, simply running $ java on the prompt hangs, i.e. it takes no action.
$ which java
/usr/bin/java
$ ls -ltr /usr/bin/java
May 20 15:09 /usr/bin/java -> /System/Library/Frameworks/JavaVM.framework/Versions/Current/Commands/java
$java (no response)
Here is the output of $ top
PID COMMAND %CPU TIME #TH #PRTS #MREGS RPRVT RSHRD RSIZE VSIZE
703 java 98.8% 0:38.54 3 110 72 480K 184K 1964K 40M
Any clues?
cheers

Answer 1

Hi man,
In the wake of this java problem I resorted to keep working on my old machine, and today in my spare time I tried to fix this new machine.
So I execute $java on prompt, and then try to check the files it has opened, using lsof -p pid
I see it referring to
/System/Library/Frameworks/JavaVM.framework/Versions/1.5.0/Home/bin/java
isn't this usually the JAVA_HOME
However, executing $/System/Library/Frameworks/JavaVM.framework/Versions/1.5.0/Home/bin/java
hangs!!
but
$/System/Library/Frameworks/JavaVM.framework/Versions/1.6.0/Home/bin/java
works!!
$ pwd
/System/Library/Frameworks/JavaVM.framework/Versions/1.6/Home/bin
$ ./java -version
java version "1.6.0_07"
Java(TM) SE Runtime Environment (build 1.6.0_07-b06-153)
Java HotSpot(TM) 64-Bit Server VM (build 1.6.0_07-b06-57, mixed mode)
So, I changed the links as follows
borgraf:Versions raveesh$ l
total 72
drwxr-xr-x 3 root wheel 102 Mar 6 2008 1.3.1
lrwxr-xr-x 1 root wheel 3 May 21 19:42 1.4.1 -> 1.4
drwxr-xr-x 8 root wheel 272 May 21 19:42 1.6.0
lrwxr-xr-x 1 root wheel 3 May 21 19:44 OldCurrentJDK -> 1.5
lrwxr-xr-x 1 root wheel 5 May 21 19:44 1.4 -> 1.4.2
lrwxr-xr-x 1 root wheel 5 May 21 19:44 1.3 -> 1.3.1
lrwxr-xr-x 1 root wheel 5 May 21 19:44 1.5 -> 1.5.0
drwxr-xr-x 8 root wheel 272 May 21 19:44 1.4.2
drwxr-xr-x 8 root wheel 272 May 21 19:44 1.5.0
lrwxr-xr-x 1 root wheel 5 May 21 19:44 1.6 -> 1.6.0
lrwxr-xr-x 1 root wheel 1 May 21 19:44 OldCurrent -> A
drwxr-xr-x 8 root wheel 272 May 21 19:44 A
lrwxr-xr-x 1 root wheel 3 Jun 4 17:14 CurrentJDK -> 1.6
lrwxr-xr-x 1 root wheel 3 Jun 4 17:21 Current -> 1.6
Linking my Current and CurrentJDK to 1.6 and it works!
However, shall that be the reason!
what is in your /Versions/Current/
I got the following
$ ls /System/Library/Frameworks/JavaVM.framework/Versions/Current
CodeResources Frameworks JavaVM
Commands Headers Resources
There is no /Home in here, which is usually the case for /1.5 or /1.6
Anyways, things seems to work for the moment. Lets see if I get problem with using Java.
thanks