sudo apt-get update

sudo dpkg -i {downloaded.deb file}

openjdk-8-jre-headless_8u45-b14-1_amd64.deb 

openjdk-8-jre_8u45-b14-1_amd64.deb 

openjdk-8-jdk_8u45-b14-1_amd64.deb 

sudo apt-get -f install

sudo update-alternatives --config java

sudo update-alternatives --config javac

sudo apt-get install git-core gnupg flex bison gperf build-essential \

  zip curl zlib1g-dev gcc-multilib g++-multilib libc6-dev-i386 \

  lib32ncurses5-dev x11proto-core-dev libx11-dev lib32z-dev ccache \

  libgl1-mesa-dev libxml2-utils xsltproc unzip