Raspberry pi update the java path

Question

I installed the last image "RASPBIAN Debian Wheezy" on my Pi and it contains java 8 After that I installed java 7: and I want to modify the java path from java 8 to java 7 So I updated my environment variables to:

export JAVA_HOME=/usr/lib/jvm/jdk-7-oracle-armhf/bin/java
export PATH=$PATH:/usr/lib/jvm/jdk-7-oracle-armhf/bin

I added them to my ~/.bashrc

but still when I execute java -version I got the java 8, even after reboot:

java -version
java version "1.8.0"
Java(TM) SE Runtime Environment (build 1.8.0-b132)
Java HotSpot(TM) Client VM (build 25.0-b70, mixed mode)

and when I display my envirnment variables, I got the java 7!:

echo $PATH
/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/local/games:/usr/games:/usr/lib/jvm/jdk-7-oracle-armhf/bin

pi@raspberrypi /usr/bin $ echo $JAVA_HOME
/usr/lib/jvm/jdk-7-oracle-armhf/bin/java

How can I update the path so that the command "java -version" gave me the java 7?

Have you tried to uninstall Java 8? Or you need it too?

webo80
– webo80

2015-06-16 14:25:07 +00:00
Commented Jun 16, 2015 at 14:25 — webo80
– webo80, Commented Jun 16, 2015 at 14:25

isma3l · Accepted Answer · 2015-06-16 14:33:47Z

4

You need to use update-alternatives

sudo update-alternatives --install "/usr/bin/java" "java" "/usr/lib/jvm/jdk-7-oracle-armhf/bin/java" 1  
sudo update-alternatives --set java /usr/lib/jvm/jdk-7-oracle-armhf/bin/java

If still having problems check here http://www.element14.com/community/docs/DOC-54112/l/java-on-the-raspberry-pi

answered Jun 16, 2015 at 14:33

isma3l

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FatalError · Accepted Answer · 2015-06-16 14:27:24Z

0

Simply, your PATH is in the wrong order. The conventional way would be:

export JAVA_HOME=/usr/lib/jvm/jdk-7-oracle-armhf
export PATH=$JAVA_HOME/bin:$PATH

Note that I prepended your new java. Since PATH is searched in order, it would still find the old java first, otherwise.

answered Jun 16, 2015 at 14:27

FatalError

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