Ubuntu16.04安装oracle-java8-installer

时间:2023-02-04 06:31:15

本篇博客参考

1. 安装默认JRE/JDK

  • 更新
 sudo apt-get update
  • 检查是否安装了Java
java -version
  • 如果返回The program java can be found in the following packages,说明电脑上并没有安装Java,请执行:
sudo apt-get install default-jre
  • 这将会安装JRE(Java Runtime Environment),如果需要安装JDK(Java Development Kit)的话,请执行:
sudo apt-get install default-jdk

安装Oracle JDK

sudo apt-get install python-software-properties
sudo add-apt-repository ppa:webupd8team/java
sudo apt-get update

安装oracle-java8-installer

sudo apt-get install oracle-java8-installer

Setting the "JAVA_HOME"

sudo update-alternatives --config java
  • 返回结果如下:
There are 2 choices for the alternative java (providing /usr/bin/java).

  Selection    Path                                            Priority   Status
------------------------------------------------------------
  0            /usr/lib/jvm/java-8-oracle/jre/bin/java          1081      auto mode
  1            /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java   1081      manual mode
* 2            /usr/lib/jvm/java-8-oracle/jre/bin/java          1081      manual mode

Press <enter> to keep the current choice[*], or type selection number: 

含义:

  1. /usr/lib/jvm/java-8-oracle
  2. /usr/lib/jvm/java-8-openjdk-amd64
  3. /usr/lib/jvm/java-8-oracle
  • 复制路径信息,并修改/etc/environment文件:
sudo gedit /etc/environment
  • 在最后一行添加:
JAVA_HOME="YOUR_PATH"
  • 然后执行:
source /etc/environment
  • 测试
echo $JAVA_HOME

Ubuntu16.04安装oracle-java8-installer

大功告成!