Pay attention to the asterisk before the numbers on the left and if the correct one is not set choose the correct one by typing the number of it and pressing enter. Press enter to keep the current choice, or type selection number: * 0 /usr/lib/jvm/java-7-openjdk-amd64/jre/bin/java 1071 auto modeġ /usr/lib/jvm/java-7-openjdk-amd64/jre/bin/java 1071 manual modeĢ /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java 1069 manual mode

You get something like this: There are 2 choices for the alternative java (providing /usr/bin/java). You get something like this (in a 32-bit environment -i386 postfix instead of -amd64): java-1.7.0-openjdk-amd64 1071 /usr/lib/jvm/java-1.7.0-openjdk-amd64 Check which JDK-Versions are available on your system perform:.Sudo apt-get install -t jessie-backports openjdk-8-jdk So you have to rely on Debian Backports repository and add the following lines to the end of your /etc/apt/sources.list file: The version 8 of OpenJDK is not available in main stable repository of Debian Jessie.

Debian install java