安裝JDK 1. 更新apt-get: $ sudo apt-get update 2. 安裝jdk: $ sudo apt-get install openjdk-8-jdk 部分eclipse現只支持jdk8,且安裝jdk9會有error,詳見: https://askubuntu.com/qu ...
- 安裝JDK
1. 更新apt-get:
$ sudo apt-get update
2. 安裝jdk:
$ sudo apt-get install openjdk-8-jdk
部分eclipse現只支持jdk8,且安裝jdk9會有error,詳見:
3. JDK版本切換:
$ sudo update-alternatives --config java
Differencebetween auto mode and manual mode in update-alternatives:
In Auto Mode, will select the generic name of the programautomatically based on the Priority value of the alternatives; The one with thehighest priority gets set as the generic name.
In Manual Mode, will set the generic name as the userselected alternative irrespective of the Priority value of the alternatives,hence the name "manual".
Java alternatives(sudoupdate-alternatives --config java) Change auto mode:
Make the priorityof /usr/lib/jvm/java-8-oracle/jre/bin/java higher that the rest to automatically enable it asdefault java binary.
$ sudoupdate-alternatives --install /usr/bin/java java/usr/lib/jvm/java-8-oracle/jre/bin/java 1100
4. 確認當前java 版本:
$ java -version
5. 添加環境變數:
$ sudo vim /etc/profile
export JAVA_HOME="/usr/lib/jvm/java-8-openjdk/jre/bin"
$ source /etc/profile
- 安裝eclipse
1. 查看系統版本:
$ uname -a
Linux ubuntu 4.4.0-96-generic #119-Ubuntu SMP Tue Sep12 14:59:54 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
2. 官網下載:
http://www.eclipse.org/downloads/eclipse-packages/
3. 解壓 (免安裝版)
4. 運行“eclipse”
5. Window ->Perspective -> Customize Perspective 調整成自己習慣的perspective。
6. Lock to launcher 或者 添加圖標。