Installing openjdk-7-jre on ubuntu 10.04 - Package openjdk-7-jre has no installation candidate [closed]

Question

I'm trying to install openjdk-7 on my ubuntu but I'm getting the following error:

$ sudo apt-get install openjdk-7-jre
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Package openjdk-7-jre is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
E: Package openjdk-7-jre has no installation candidate

I suppose I'm missing some repos or something like that but I was unable to find any reference where and what.

Answer 1

I recently had to install Java 7 on CentOS, openSUSE and Ubuntu, and after much fretting and research, finally settled on this, which works on all three flavors:

• Ignore (and uninstall) any JREs or JDKs bundled with / shipped with your distribution. They are more trouble than they're worth, and always way behind the latest updates.
• Download JRE 7 (or JDK 7 if you want to develop) from http://www.oracle.com/technetwork/java/javase/downloads/index.html.
  • For the JRE, get jre-xxx-linux-x64.tar.gz if you have a 64-bit machine or jre-xxx-linux-i586.tar.gz if 32-bit. Don't bother with the RPMs.
  • For the JDK, get jdk-xxx-linux-x64.tar.gz if you have a 64-bit machine or jdk-xxx-linux-i586.tar.gz if 32-bit.
• Perform the following as root or using sudo:
  • # tar -xzvf jdk-xxx-linux-x64.tar.gz (or whichever one you downloaded)
  • # mkdir /usr/java
  • # mv jdkx.x.x_xx /usr/java (or, if JRE, this will be the extracted JRE directory)
  • # ln -s /usr/java/jdkx.x.x_xx /usr/java/jdkx
  • # ln -s /usr/java/jdkx /usr/java/latest
  • # ln -s /usr/java/latest /usr/java/default
  • # ln -s /usr/java/default/bin/java /usr/bin/java
  • # ln -s /usr/java/default/bin/javac /usr/bin/javac
  • # ln -s /usr/java/default/bin/javah /usr/bin/javah
  • # ln -s /usr/java/default/bin/javadoc /usr/bin/javadoc
  • # ln -s /usr/java/default/bin/javaws /usr/bin/javaws

Obviously, you'll have to fill in some blanks here, but you should get the picture. As a working example, here is my installation (note that for my purposes I needed both the 64-bit AND 32-bit versions of both the Java 7 AND Java 6 JDKs, so there's a lot):

# ls -al /usr/java/
total 24
drwxr-xr-x  6 root root 4096 Sep  2 11:02 .
drwxr-xr-x 14 root root 4096 Aug  9 22:14 ..
lrwxrwxrwx  1 root root   16 Aug 26 20:05 default -> /usr/java/latest
drwxr-xr-x  8 root root 4096 Sep  2 10:52 jdk1.6.0_35
drwxr-xr-x  8 root root 4096 Sep  2 10:52 jdk1.6.0_35-32
drwxr-xr-x  8 root root 4096 Sep  2 10:52 jdk1.7.0_07
drwxr-xr-x  8 root root 4096 Sep  2 10:52 jdk1.7.0_07-32
lrwxrwxrwx  1 root root   11 Sep  2 10:54 jdk6 -> jdk1.6.0_35
lrwxrwxrwx  1 root root   14 Sep  2 10:54 jdk6-32 -> jdk1.6.0_35-32
lrwxrwxrwx  1 root root   11 Sep  2 10:54 jdk7 -> jdk1.7.0_07
lrwxrwxrwx  1 root root   14 Sep  2 10:54 jdk7-32 -> jdk1.7.0_07-32
lrwxrwxrwx  1 root root    4 Sep  2 10:55 latest -> jdk7
# ls -al /usr/bin/java*
lrwxrwxrwx 1 root root 26 Aug 26 20:05 /usr/bin/java -> /usr/java/default/bin/java
lrwxrwxrwx 1 root root 27 Aug 26 20:05 /usr/bin/javac -> /usr/java/default/bin/javac
lrwxrwxrwx 1 root root 29 Aug 26 20:05 /usr/bin/javadoc -> /usr/java/default/bin/javadoc
lrwxrwxrwx 1 root root 27 Aug 26 20:07 /usr/bin/javah -> /usr/java/default/bin/javah
lrwxrwxrwx 1 root root 28 Aug 26 20:05 /usr/bin/javaws -> /usr/java/default/bin/javaws
# java -version
java version "1.7.0_07"
Java(TM) SE Runtime Environment (build 1.7.0_07-b10)
Java HotSpot(TM) 64-Bit Server VM (build 23.3-b01, mixed mode)