in order to set the default java jre to use go terminal:
root@debian7:/home/user# update-alternatives --config java
There are 2 choices for the alternative java (providing /usr/bin/java).
Selection Path Priority Status ------------------------------------------------------------ * 0 /usr/lib/jvm/java-6-openjdk-amd64/jre/bin/java 1061 auto mode 1 /usr/lib/jvm/java-6-openjdk-amd64/jre/bin/java 1061 manual mode 2 /usr/lib/jvm/java-7-openjdk-amd64/jre/bin/java 1051 manual mode
Press enter to keep the current choice[*], or type selection number: 2 update-alternatives: using /usr/lib/jvm/java-7-openjdk-amd64/jre/bin/java to provide /usr/bin/java (java) in manual mode root@debian7:/home/user# uname -a tested on : Linux debian7 3.2.0-4-amd64 #1 SMP Debian 3.2.60-1+deb7u3 x86_64 GNU/Linux if you have no java installed go: apt-get install openjdk-7-jre openjdk-7-sdk;
if you are getting this error:
user@debian7:~$ /Applications/eclipse/eclipse
(java:4054): GLib-GObject-WARNING **: cannot register existing type `GdkDisplayManager'
you need to terminal:
export SWT_GTK3=0 source: https://bugs.eclipse.org/bugs/show_bug.cgi?id=430736
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