root@ubuntu-d01:~# update-java-alternatives -s java-1.6.0-openjdk
update-alternatives: error: no alternatives for appletviewer.
update-alternatives: error: no alternatives for apt.
update-alternatives: error: no alternatives for extcheck.
update-alternatives: error: no alternatives for idlj.
update-alternatives: error: no alternatives for jar.
update-alternatives: error: no alternatives for jarsigner.
update-alternatives: error: no alternatives for java.
update-alternatives: error: no alternatives for javac.
update-alternatives: error: no alternatives for javadoc.
update-alternatives: error: no alternatives for javah.
update-alternatives: error: no alternatives for javap.
update-alternatives: error: no alternatives for -javaplugin.so.
update-alternatives: error: no alternatives for jconsole.
update-alternatives: error: no alternatives for jdb.
update-alternatives: error: no alternatives for jexec.
update-alternatives: error: no alternatives for jhat.
update-alternatives: error: no alternatives for jinfo.
update-alternatives: error: no alternatives for jmap.
update-alternatives: error: no alternatives for jps.
update-alternatives: error: no alternatives for jrunscript.
update-alternatives: error: no alternatives for jsadebugd.
update-alternatives: error: no alternatives for jstack.
update-alternatives: error: no alternatives for jstat.
update-alternatives: error: no alternatives for jstatd.
update-alternatives: error: no alternatives for keytool.
update-alternatives: error: no alternatives for native2ascii.
update-alternatives: error: no alternatives for orbd.
update-alternatives: error: no alternatives for pack200.
update-alternatives: error: no alternatives for policytool.
update-alternatives: error: no alternatives for rmic.
update-alternatives: error: no alternatives for rmid.
update-alternatives: error: no alternatives for rmiregistry.
update-alternatives: error: no alternatives for schemagen.
update-alternatives: error: no alternatives for serialver.
update-alternatives: error: no alternatives for servertool.
update-alternatives: error: no alternatives for tnameserv.
update-alternatives: error: no alternatives for unpack200.
update-alternatives: error: no alternatives for wsgen.
update-alternatives: error: no alternatives for wsimport.
update-alternatives: error: no alternatives for xjc.
update-alternatives: error: no alternatives for java.
update-alternatives: error: no alternatives for jexec.
update-alternatives: error: no alternatives for keytool.
update-alternatives: error: no alternatives for orbd.
update-alternatives: error: no alternatives for pack200.
update-alternatives: error: no alternatives for rmid.
update-alternatives: error: no alternatives for rmiregistry.
update-alternatives: error: no alternatives for servertool.
update-alternatives: error: no alternatives for tnameserv.
update-alternatives: error: no alternatives for unpack200.
update-java-alternatives: jdk alternative does not exist: /usr/lib/jvm/java-6-openjdk/bin/appletviewer
update-java-alternatives: jdk alternative does not exist: /usr/lib/jvm/java-6-openjdk/bin/apt
update-java-alternatives: jdk alternative does not exist: /usr/lib/jvm/java-6-openjdk/bin/extcheck
update-java-alternatives: jdk alternative does not exist: /usr/lib/jvm/java-6-openjdk/bin/idlj
update-java-alternatives: jdk alternative does not exist: /usr/lib/jvm/java-6-openjdk/bin/jarsigner
update-java-alternatives: jdk alternative does not exist: /usr/lib/jvm/java-6-openjdk/bin/jar
update-java-alternatives: jdk alternative does not exist: /usr/lib/jvm/java-6-openjdk/bin/javac
update-java-alternatives: jdk alternative does not exist: /usr/lib/jvm/java-6-openjdk/bin/javadoc
update-java-alternatives: jdk alternative does not exist: /usr/lib/jvm/java-6-openjdk/bin/javah
update-java-alternatives: jdk alternative does not exist: /usr/lib/jvm/java-6-openjdk/bin/javap
update-java-alternatives: jdk alternative does not exist: /usr/lib/jvm/java-6-openjdk/bin/jconsole
update-java-alternatives: jdk alternative does not exist: /usr/lib/jvm/java-6-openjdk/bin/jdb
update-java-alternatives: jdk alternative does not exist: /usr/lib/jvm/java-6-openjdk/bin/jhat
update-java-alternatives: jdk alternative does not exist: /usr/lib/jvm/java-6-openjdk/bin/jinfo
update-java-alternatives: jdk alternative does not exist: /usr/lib/jvm/java-6-openjdk/bin/jmap
update-java-alternatives: jdk alternative does not exist: /usr/lib/jvm/java-6-openjdk/bin/jps
update-java-alternatives: jdk alternative does not exist: /usr/lib/jvm/java-6-openjdk/bin/jrunscript
update-java-alternatives: jdk alternative does not exist: /usr/lib/jvm/java-6-openjdk/bin/jsadebugd
update-java-alternatives: jdk alternative does not exist: /usr/lib/jvm/java-6-openjdk/bin/jstack
update-java-alternatives: jdk alternative does not exist: /usr/lib/jvm/java-6-openjdk/bin/jstatd
update-java-alternatives: jdk alternative does not exist: /usr/lib/jvm/java-6-openjdk/bin/jstat
update-java-alternatives: jdk alternative does not exist: /usr/lib/jvm/java-6-openjdk/bin/native2ascii
update-java-alternatives: jdk alternative does not exist: /usr/lib/jvm/java-6-openjdk/bin/rmic
update-java-alternatives: jdk alternative does not exist: /usr/lib/jvm/java-6-openjdk/bin/schemagen
update-java-alternatives: jdk alternative does not exist: /usr/lib/jvm/java-6-openjdk/bin/serialver
update-java-alternatives: jdk alternative does not exist: /usr/lib/jvm/java-6-openjdk/bin/wsgen
update-java-alternatives: jdk alternative does not exist: /usr/lib/jvm/java-6-openjdk/bin/wsimport
update-java-alternatives: jdk alternative does not exist: /usr/lib/jvm/java-6-openjdk/bin/xjc
update-alternatives: error: no alternatives for policytool.
update-java-alternatives: plugin alternative does not exist: /usr/lib/jvm/java-6-openjdk/jre/lib/i386/IcedTeaPlugin.so



root@ubuntu-d01:/usr/lib/jvm/java-6-openjdk# update-java-alternatives  -v -l
listing java alternatives:
java-1.6.0-openjdk 1061 /usr/lib/jvm/java-1.6.0-openjdk
hl java /usr/lib/jvm/java-6-openjdk/jre/bin/java
hl keytool /usr/lib/jvm/java-6-openjdk/jre/bin/keytool
hl pack200 /usr/lib/jvm/java-6-openjdk/jre/bin/pack200
hl rmid /usr/lib/jvm/java-6-openjdk/jre/bin/rmid
hl rmiregistry /usr/lib/jvm/java-6-openjdk/jre/bin/rmiregistry
hl unpack200 /usr/lib/jvm/java-6-openjdk/jre/bin/unpack200
hl orbd /usr/lib/jvm/java-6-openjdk/jre/bin/orbd
hl servertool /usr/lib/jvm/java-6-openjdk/jre/bin/servertool
hl tnameserv /usr/lib/jvm/java-6-openjdk/jre/bin/tnameserv
hl jexec /usr/lib/jvm/java-6-openjdk/jre/lib/jexec
jre policytool /usr/lib/jvm/java-6-openjdk/jre/bin/policytool
jdk appletviewer /usr/lib/jvm/java-6-openjdk/bin/appletviewer
jdk apt /usr/lib/jvm/java-6-openjdk/bin/apt
jdk extcheck /usr/lib/jvm/java-6-openjdk/bin/extcheck
jdk idlj /usr/lib/jvm/java-6-openjdk/bin/idlj
jdk jar /usr/lib/jvm/java-6-openjdk/bin/jar
jdk jarsigner /usr/lib/jvm/java-6-openjdk/bin/jarsigner
jdk javac /usr/lib/jvm/java-6-openjdk/bin/javac
jdk javadoc /usr/lib/jvm/java-6-openjdk/bin/javadoc
jdk javah /usr/lib/jvm/java-6-openjdk/bin/javah
jdk javap /usr/lib/jvm/java-6-openjdk/bin/javap
jdk jconsole /usr/lib/jvm/java-6-openjdk/bin/jconsole
jdk jdb /usr/lib/jvm/java-6-openjdk/bin/jdb
jdk jhat /usr/lib/jvm/java-6-openjdk/bin/jhat
jdk jinfo /usr/lib/jvm/java-6-openjdk/bin/jinfo
jdk jmap /usr/lib/jvm/java-6-openjdk/bin/jmap
jdk jps /usr/lib/jvm/java-6-openjdk/bin/jps
jdk jrunscript /usr/lib/jvm/java-6-openjdk/bin/jrunscript
jdk jsadebugd /usr/lib/jvm/java-6-openjdk/bin/jsadebugd
jdk jstack /usr/lib/jvm/java-6-openjdk/bin/jstack
jdk jstat /usr/lib/jvm/java-6-openjdk/bin/jstat
jdk jstatd /usr/lib/jvm/java-6-openjdk/bin/jstatd
jdk native2ascii /usr/lib/jvm/java-6-openjdk/bin/native2ascii
jdk rmic /usr/lib/jvm/java-6-openjdk/bin/rmic
jdk schemagen /usr/lib/jvm/java-6-openjdk/bin/schemagen
jdk serialver /usr/lib/jvm/java-6-openjdk/bin/serialver
jdk wsgen /usr/lib/jvm/java-6-openjdk/bin/wsgen
jdk wsimport /usr/lib/jvm/java-6-openjdk/bin/wsimport
jdk xjc /usr/lib/jvm/java-6-openjdk/bin/xjc
plugin -javaplugin.so /usr/lib/jvm/java-6-openjdk/jre/lib/i386/IcedTeaPlugin.so