Requirements
Download an
JDK
gz file.
https://www.oracle.com/technetwork/java/javase/downloads/index.htmlDownload
Eclipse IDE installer
gz file.
https://www.eclipse.org/downloads/download.php?file=/oomph/epp/2018-12/R/eclipse-inst-linux64.tar.gz
you can select an mirror site for downloading it.
Config JDK
Extract and Install Java
tar -xvf ~/Downloads/jdk1.8.0_201.tar.gz
Create an folder to store it.
sudo mkdir /usr/lib/jvm/jdk1.8.0_201
Move extracted package to the directory.
sudo mv jdk1.8.0_201*/* /usr/lib/jvm/jdk1.8.0_201/
Run the commands below to configure java.
sudo update-alternatives --install "/usr/bin/java" "java" "/usr/lib/jvm/jdk1.8.0_201//bin/java" 1010
sudo update-alternatives --install "/usr/bin/javac" "javac" "/usr/lib/jvm/jdk1.8.0_201//bin/javac" 1010
sudo update-alternatives --install "/usr/bin/javaws" "javaws" "/usr/lib/jvm/jdk1.8.0_201//bin/javaws" 1010
Create Java Environment Variables
.
New an file.
sudo vim /etc/profile.d/javajdk.sh
Copy this lines to javajdk.sh
export J2SDKDIR=/usr/lib/jvm/jdk1.8.0_201
export J2REDIR=/usr/lib/jvm/jdk1.8.0_201/jre
export PATH=$PATH:/usr/lib/jvm/jdk1.8.0_201/bin:/usr/lib/jvm/jdk1.8.0_201/db/bin:/usr/lib/jvm/jdk1.8.0_201/jre/bin
export JAVA_HOME=/usr/lib/jvm/jdk1.8.0_201
export DERBY_HOME=/usr/lib/jvm/jdk1.8.0_201/db
Make it effective.
source /etc/profile.d/javajdk.sh
Test if successful.
Run the commandjava -version
, it will show messages like this
java version "1.8.0_201"
Java(TM) SE Runtime Environment (build 1.8.0_201-b09)
Java HotSpot(TM) 64-Bit Server VM (build 25.201-b09, mixed mode)
if it, Congratulations!
Install Eclipse
Extract eclipse installer
gz file, then just run the eclipse-inst
executable file.
or run the command on eclipse installer
directiry
./eclipse-inst
.
Next, it is some easy steps!
Add an icon on application lancher
Step1: change current directiry to /usr/share/applicaitons
cd /usr/share/applicaitons
Step2: new a Java.desktop
file.
Input the lines:
[Desktop Entry]
Encoding=UTF-8
Name=Java #name it
Comment=Eclipse-Java
Exec=/path/eclipse #your path
Icon=/path/icon.xpm #your path
Terminal=false
StartupNotify=true
Type=Application
Categories=Application;Development;
Step3: Give it execution permission.
Run the command:
sudo chmod +x Java.desktop
Reference
https://websiteforstudents.com/install-oracle-java-jre-jdk-on-ubuntu-18-04-lts-beta/
This is my first post, if there are any errors, please correct me:)
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