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#How to install openjdk 7 jdk in raspberry pi install#
#How to install openjdk 7 jdk in raspberry pi software#
#How to install openjdk 7 jdk in raspberry pi zip#
#How to install openjdk 7 jdk in raspberry pi download#

Sudo update-alternatives for other commands if needed (e.g. Sudo update-alternatives -install "/usr/bin/java" "java" "/opt/jdk1.8.0/bin/java" 1

#How to install openjdk 7 jdk in raspberry pi install#

To install the Oracle Java System: sudo tar zxvf jdk-8-ea-b36e-linux-arm-hflt-*.tar.gz -C /opt

#How to install openjdk 7 jdk in raspberry pi download#

Remember to download the Oracle Java system on your Pi, or you won't be able to install it. Instead of the above instructions you need to download the file called Oracle JDK 8 (with JavaFX) for ARM Early Access on the Oracle Java 8 download page. If you want the Oracle Java VM, which is a lot faster (optimized for embedded arm CPUs) and is also a developer preview (applications maybe buggy or crash) until some time into the future. This allows you to compile Java applications to bytecode. To install the JDK run the command: sudo apt-get install openjdk-7-jdk This installs the Java JRE (Java Runtime Environment) which will allow you to run applications written in Java. To install the Java Runtime Environment (JRE) run the following command: sudo apt-get install openjdk-7-jre However, if you are using lightdm, the default GUI login won't do this, see here for a solution. To make it the default from now on, add this to ~/.profile: export PATH=/usr/local/jdk1.8.0/bin:$PATH That will only work for your current shell.

If there are any other javas installed, that will make this one take precedence: PATH=/usr/local/jdk1.8.0/bin:$PATH.

Put the bin/ directory at the beginning of your executable search $PATH.

You can rename the directory, mv oracle-jdk-whatever jdk1.8.0. This will create a directory with everything in it. tar.gz in /usr/local and unpack it: tar -xzf. I think bearbin's answer is pretty definitive but if you want a simple way to try oracle: Compiling is slow on the pi, surprise, but the jre seems to run quite fast once it loads. javac.The oracle 8 preview works for me, thus far.

Log out and log back in again and you should now have access to the Java Development Kit and the compiler tools e.g.

Edit ~/.bashrc and add the following lines:Įxport JAVA_HOME=`update-alternatives –list java | sed ’s>/bin/java>’` As developers we need the JDK version so we’ll have to rejig our PATH environment variable so it picks up the JDK’s version of Java before the JRE’s. This is ok because all the applications on the platform will run under it. So when you type jave you’re getting the JRE version and not the Java Development Kit version and as a result you are not getting javac wither.

The Java that has been installed here is the Java Runtime Environment (JRE).

Java HotSpot™ Client VM (build 23.21-b01, mixed mode) Java™ SE Runtime Environment (build 1.7.0_21-b11) Update-alternatives –set java /opt/java/jdk1.7.0_21/bin/java

We must also tell the system that we want it to use this version of Oracle Java by default.

Update-alternatives –install “/usr/bin/java” “java” “/opt/java/jdk1.7.0_21/bin/java” 1

Now we’ll tell the system about the Oracle Java installation.

Tar -xvzf /home/pi/jdk-7u21-linux-arm-sfp.tgz

#How to install openjdk 7 jdk in raspberry pi zip#

Also there now! Create somewhere for Oracle Java to live and uncompress the downloaded zip file.

It also has the handy benefit of separating the history of your sessions with extraneous commands that you wouldn’t normally use. This will stop us having to write sudo in front of everything.

Do my sudo bash trick again to open a root shell.

Scp jdk-7u21-linux-arm-sfp.tgz Open a PuTTY session to the Raspberry Pi. Copy the file to the Raspberry Pi (from the command line).Navigate to the Java SE Downloads and click through JDK and get a copy of Linux ARM v6/v7 Soft Float ABI ( ).Using the instructions Installing and setting up a Raspberry Pi, install Soft-float Debian “wheezy”, -wheezy-armel (at the time of writing).You should consider using the OpenJDK which is installed on the normal wheezy.

#How to install openjdk 7 jdk in raspberry pi software#

You should know that the build we are going to use, uses a software floating point algorithm instead of the on-board hardware it is as a result slower than the other plain wheezy version.

So here are the instructions to get Oracle Java 7 up and running on a Raspberry Pi from scratch. I had great trouble installing Oracle Java on my Raspberry Pi due to the liblji.so problem.