How can I install open JDK 7 on Ubuntu 18.04?

Question

I need openjdk to build my Android ROM, but I can't install it. I installed Oracle JDK but it doesn't work.

Answer 1

First install OpenJDK7:

sudo add-apt-repository ppa:openjdk-r/ppa
sudo apt-get update
sudo wget -P ~/Downloads http://ftp.de.debian.org/debian/pool/main/o/openjdk-7/openjdk-7-jdk_7u161-2.6.12-1_amd64.deb
sudo wget -P ~/Downloads http://ftp.de.debian.org/debian/pool/main/o/openjdk-7/openjdk-7-jre_7u161-2.6.12-1_amd64.deb
sudo wget -P ~/Downloads http://ftp.de.debian.org/debian/pool/main/o/openjdk-7/openjdk-7-jre-headless_7u161-2.6.12-1_amd64.deb
sudo wget -P ~/Downloads http://ftp.de.debian.org/debian/pool/main/libj/libjpeg-turbo/libjpeg62-turbo_1.5.2-2+b1_amd64.deb
sudo update-alternatives --config java
cd ~/Downloads
sudo dpkg -i *.deb
sudo apt install -f
#choose Java7
sudo update-alternatives --config java 

Now install Maven:

sudo apt-get install maven

Install Eclipse Luna 4.4.2 SR2

sudo su
cd /opt
sudo wget -P ~/Downloads http://download.eclipse.org/technology/epp/downloads/release/luna/SR2/eclipse-jee-luna-SR2-linux-gtk.tar.gz
tar -xvf eclipse*.tar.gz

Now edit the eclipse.ini file:

sudo nano /opt/eclipse/eclipse.ini  <br/>

and change:

If you run in Performance Issues, find for your self the best XMS/XMX Range

Texteditor start

-startup
plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar
--launcher.library
plugins/org.eclipse.equinox.launcher.gtk.linux.x86_64_1.1.300.v20150602-1417
-product
org.eclipse.epp.package.jee.product
--launcher.defaultAction
openFile
-showsplash
org.eclipse.platform
--launcher.XXMaxPermSize
1024m
--launcher.defaultAction
openFile
--launcher.appendVmargs
-vmargs
-Dosgi.requiredJavaVersion=1.7
-XX:MaxPermSize=4096m
-Xms2048m
-Xmx4096m
#Texteditor end

Now run eclipse:

cd /usr/local/bin 
echo 'ECLIPSE=/opt/eclipse/eclipse' >eclipse 
echo 'exec $ECLIPSE "$@"' >>eclipse 
chmod +x eclipse
exit
eclipse

Add eclipse to the Desktop:

sudo nano /opt/eclipse/eclipse.desktop

and add:

[Desktop Entry]
Type=Application
Name=Eclipse
Comment=Eclipse Integrated Development Environment
Icon=/opt/eclipse/icon.xpm
Exec=/opt/eclipse/eclipse
Terminal=false
Categories=Development
StartupWMClass=Eclipse

Save and exit and execute:

sudo chmod +x /opt/eclipse/eclipse.desktop
sudo cp /opt/eclipse/eclipse.desktop ~/Schreibtisch
sudo mkdir ~/.local/share/applications
sudo cp /opt/eclipse/eclipse.desktop ~/.local/share/applications

Wilffly 8.2.1 sudo su sudo wget -P /opt https://download.jboss.org/wildfly/8.2.1.Final/wildfly-8.2.1.Final.tar.gz cd /opt tar -xvzf wildfly*.tar.gz sudo mv wildfly-8.2.1.Final wildfly Add Management-User sudo /opt/wildfly/bin/add-user.sh

sudo nano /opt/wildfly/standalone/configuration/mgmt-users.properties

Wildfly Verknüpfungen erstellen sudo wget -P /opt/wildfly/bin https://api.jujucharms.com/v5/precise/wildfly-5/icon.svg sudo nano /opt/wildfly/bin/wildflyapplicationserver.desktop

[Desktop Entry] Type=Application Name=Wildfly Standalone 8.2.1 Comment=Wildfly Application Server authored by JBoss Icon=/opt/wildfly/bin/icon.svg Exec=/opt/wildfly/bin/standalone.sh Terminal=true Categories=Development StartupWMClass=Wildfly

sudo chmod +x /opt/wildfly/bin/wildflyapplicationserver.desktop sudo cp /opt/wildfly/bin/wildflyapplicationserver.desktop ~/Schreibtisch sudo cp /opt/wildfly/bin/wildflyapplicationserver.desktop ~/.local/share/applications