linux 安装jdk11

linux 安装jdk11

1. 安装Java 11

	sudo apt install openjdk-11-jdk

2.检查jdk版本

	java -version

3.输出看起来像下面这样：

	openjdk version "11.0.9.1" 2020-11-04
	OpenJDK Runtime Environment (build 11.0.9.1+1-Ubuntu-0ubuntu1.20.04)
	OpenJDK 64-Bit Server VM (build 11.0.9.1+1-Ubuntu-0ubuntu1.20.04, mixed mode, sharing)

4.配置环境变量

1. 使用vim或vi指令打开profile文件：

	vim /etc/profile

2. 将以下代码粘贴进去：

	JAVA_HOME=/usr/lib/jvm/java-11-openjdk-amd64
	CLASSPATH=$JAVA_HOME/lib
	PATH=$JAVA_HOME/bin:$PATH
	export PATH JAVA_HOME CLASSPATH

	如果没有权限保存，执行下边名字输入密码即可

	# :w ! sudo tee % 

3. 重新加载/etc/profile

	source /etc/profile

查看Java版本：

java -version

openjdk version "11.0.9.1" 2020-11-04
OpenJDK Runtime Environment (build 11.0.9.1+1-post-Uos-1deb10u2)
OpenJDK 64-Bit Server VM (build 11.0.9.1+1-post-Uos-1deb10u2, mixed mode, sharing)

查看gradle版本：

./gradle --version

Build time:   2021-08-17 09:59:03 UTC
Revision:     a773786b58bb28710e3dc96c4d1a7063628952ad
Kotlin:       1.5.21
Groovy:       3.0.8
Ant:          Apache Ant(TM) version 1.10.9 compiled on September 27 2020
JVM:          11.0.9.1 (Uos 11.0.9.1+1-post-Uos-1deb10u2)
OS:           Linux 5.10.50-amd64-desktop amd64