1. Download jdk1.8.0_111
Official website download address: http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
Screenshot below:
2. Copy and unzip operation
Copy the downloaded file (usually under the download path) to the /usr/local/java path: The
command is as follows:
- Go to the download path
ubuntu @ ubuntu :~$ cd /home/ubuntu/download
ubuntu @ ubuntu :~/download$ - Make a copy
create the java directory:
ubuntu @ ubuntu :~/download $ cd /usr/local
ubuntu @ ubuntu :/usr/local$ sudo mkdir java
copy:
ubuntu @ ubuntu :/$ sudo cp /home/ ubuntu /download/jdk- 8u131-linux-x64.tar.gz /usr/local/java
[sudo] ubuntu 's password: (enter your own user's password here) - Unzip the tar file
ubuntu @ ubuntu :/$ cd /usr/local/java
ubuntu @ ubuntu :/usr/local/java$ sudo tar -zxvf jdk-8u131-linux-x64.tar.gz
At this point jdk is extracted to the current path Under jdk1.8.0_131
delete the installation package
ubuntu @ ubuntu :/usr/local/java$ su rm jdk-8u131-linux-x64.tar.gz
3. Configure environment variables
- Use gedit to open the environment variable configuration file bashrc
ubuntu @ ubuntu :/usr/local/java$ sudo gedit ~/.bashrc - Add the following code at the end of the file
export JAVA_HOME=/usr/local/java/ jdk1.8.0_131
export JRE_HOME=${JAVA_HOME}/jre
export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib
export PATH= ${JAVA_HOME}/bin:$PATH
save file - 使该文件生效
ubuntu@ubuntu:/usr/local/java$ source ~/.bashrc
到此所有配置已完成
4. 验证jdk是否安装成功
- 命令如下
ubuntu@ubuntu:/usr/local/java$ java -version - 显示如下，则表示成功
Java(TM) SE Runtime Environment (build 1.8.0_131-b11)
Java HotSpot(TM) 64-Bit Server VM (build 25.131-b11, mixed mode)
<<注意>> 下载的时候尽量不要用wget 下载的文件容易不完整