Newbie on debian and trying to make Java 7 the default java version used

Question

2 questions.

After installing the Oracle Java 7 on my new Debian local box, I opened up a terminal and executed the following command:

java -version

When I did that it states: java version "1.6.0_26" Java(TM) SE Runtime Environment (build 1.6.0_26-b03) Java HotSpot(TM) Client VM (build 20.1-b02, mixed mode, sharing)

I installed the Java 7 JDK and Java 7 JRE in the following directories respectively:

/usr/lib/jvm/jdk1.7.0 /usr/lib/jvm/jre1.7.0

Is there a way to remove the java-6-sun and java-6-sun-1.6.0.26 folders as well or will it hurt just to leave them there?

Any help/direction on these 2 questions would be appreciated.

Regards.

score 22 · Accepted Answer · answered May 01 '12 at 17:43

22

sudo update-alternatives --config java

Is the command to swap it i believe.

You can then call

which java

and it should reference the version selected.

answered May 01 '12 at 17:43

Mike McMahon

7,096
3
30
42

2

Thanks, Mike. I sure appreciate the quick response. That got it! – Melinda May 01 '12 at 17:59
no problem, i'm a huge ubuntu fan and ubuntu essential uses the deb. package system, so i took a wild stab in the dark :) – Mike McMahon May 01 '12 at 18:02

score 3 · Answer 2 · answered Sep 02 '12 at 13:56

3

sudo update-java-alternatives -s ... will configure all the alternatives at the same time update-java-alternatives -l lists the alternatives

answered Sep 02 '12 at 13:56

Bastien Durel

603
5
20

1

This is actually the command needed for stuff that uses JAVA_HOME environment variable – txomon Jul 21 '14 at 23:38

Newbie on debian and trying to make Java 7 the default java version used

2 Answers2

Linked