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I know that latest official openJDK is java version "1.7.0_25". But there is java version "1.7.0_40" in development. Does anyone know how to install openJDK "1.7.0_40" on an Ubuntu machine?

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If you want openJDK 1.7.0_40 for 32-bit Ubuntu then do as

wget http://www.java.net/download/jdk7u40/archive/b40/binaries/jdk-7u40-fcs-bin-b40-linux-i586-16_aug_2013.tar.gz

If you want openJDK 1.7.0_40 for a 64-bit Ubuntu then do as

wget http://www.java.net/download/jdk7u40/archive/b40/binaries/jdk-7u40-fcs-bin-b40-linux-x64-16_aug_2013.tar.gz

Then make a directory.

sudo mkdir -p /usr/lib/jvm

Then move the downloaded tar to above created directory with

sudo mv jdk-7u40-fcs-bin-b40-linux-i586-16_aug_2013.tar.gz /usr/lib/jvm

similarly you can move 64-bit also if you want.

Then cd that directory

cd /usr/lib/jvm

Then untar the archive with

32-Bit

  sudo  tar -xvf jdk-7u40-fcs-bin-b40-linux-i586-16_aug_2013.tar.gz

64-bit

  sudo  tar -xvf jdk-7u40-fcs-bin-b40-linux-x64-16_aug_2013.tar.gz

Then paste these line one by one , and these are for intimating Ubuntu that this is your default java and path of it.

sudo update-alternatives --install "/usr/bin/javac" "javac" "/usr/lib/jvm/jdk1.7.0_40/bin/javac" 1
sudo update-alternatives --install "/usr/bin/java" "java" "/usr/lib/jvm/jdk1.7.0_40/bin/java" 1

sudo update-alternatives --set "javac" "/usr/lib/jvm/jdk1.7.0_40/bin/javac"
sudo update-alternatives --set "java" "/usr/lib/jvm/jdk1.7.0_40/bin/java"

Then update your system profile , open it with

sudo gedit /etc/profile

then paste these lines

JAVA_HOME=/usr/lib/jvm/jdk1.7.0_40
PATH=$PATH:$JAVA_HOME/bin
export JAVA_HOME
export PATH

Now save & close.

Then reload your profile with

.  /etc/profile

Then we are done. check your java version.

  • Ya. I was able to find and download it. But how to install it? – RoboAlex Sep 4 '13 at 1:53
  • @Braiam my dear brother ,I am little bit slow at typing. :P – rɑːdʒɑ Sep 4 '13 at 1:58
  • Hahaha, so you are striving for being the fastest answerer in the west? ;) – Braiam Sep 4 '13 at 2:03
  • @Braiam shhhhh!!! dont reveal the truths , its public :P :P – rɑːdʒɑ Sep 4 '13 at 2:08

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