Public bug reported:
On a new Oneiric i386 machine I ran 'apt-get install openjdk-7-jdk'.
This machine had no Java installed previously. Installing this package
required installing openjdk-6-jdk, as well as the -jre for both versions
6 & 7. After the install was complete I was left with this awful
result...
# java -version
java version "1.6.0_23"
OpenJDK Runtime Environment (IcedTea6 1.11pre) (6b23~pre11-0ubuntu1.11.10)
OpenJDK Client VM (build 20.0-b11, mixed mode, sharing)
# javac -version
javac 1.7.0_147
Thats right, my javac command uses JDK7 but my java command uses JRE6.
Looking in /etc/alternatives for symlinks to Java-related executables, i
see 13 links to Java6 programs, and 28 links to Java7 programs.
Here is the alternatives information for 'java' command
# update-alternatives --display java
java - auto mode
link currently points to /usr/lib/jvm/java-6-openjdk/jre/bin/java
/usr/lib/jvm/java-6-openjdk/jre/bin/java - priority 1061
slave java.1.gz: /usr/lib/jvm/java-6-openjdk/jre/man/man1/java.1.gz
/usr/lib/jvm/java-7-openjdk-i386/jre/bin/java - priority 1051
slave java.1.gz: /usr/lib/jvm/java-7-openjdk-i386/jre/man/man1/java.1.gz
Current 'best' version is '/usr/lib/jvm/java-6-openjdk/jre/bin/java'.
And the same for the 'javac' command
# update-alternatives --display javac
javac - auto mode
link currently points to /usr/lib/jvm/java-7-openjdk-i386/bin/javac
/usr/lib/jvm/java-7-openjdk-i386/bin/javac - priority 1051
slave javac.1.gz: /usr/lib/jvm/java-7-openjdk-i386/man/man1/javac.1.gz
Current 'best' version is '/usr/lib/jvm/java-7-openjdk-i386/bin/javac'.
** Affects: openjdk-7 (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/901758
Title:
Mixed Java command versions after installing openjdk-7-jdk
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