运行以下命令: java-version 1. 注释:java -version显示当前安装的Java版本,如果安装成功,您将看到Java 11的版本信息。 4. 设置环境变量 (可选) 虽然Java可以直接使用,但设置环境变量会让您的系统更易用,特别是在需要多个Java版本时。输入以下命令配置JAVA_HOME变量: echo"export JAVA_HOME=/usr/lib/jvm/java-...
Start by updating the packages to the latest version available. sudo apt update sudo apt upgrade By default Ubuntu 22.04 repositories include two OpenJDK packages, Java Runtime Environment (JRE) and Java Development Kit (JDK). To check the available packages you can use the following command. s...
It may happen that you need older versions of Java for your project. Because the commands shown above only install the latest version of either the JDK or the JRE, you need to specifically install the older versions. But no worries! We got you covered! Installing Java 8 (JDK & JRE) To...
How to Set Default Java Version on Ubuntu 22.04 If you have multiple versions of Java installed and want to set either Java 11|Java 17|Java 18 as the default, run the command below; copysudo update-alternatives --config java Sample output; copy There are 3 choices for the alternative java...
openjdk version"11.0.14"2022-01-18 OpenJDK Runtime Environment(build11.0.14+9-Ubuntu-0ubuntu2)OpenJDK64-Bit Server VM(build11.0.14+9-Ubuntu-0ubuntu2, mixed mode, sharing) You may need the JDK in addition to the JRE in order to compile and run some specific Java-based software. To ...
Installing Oracle Java 7 On Ubuntu version 12.04 or 13.04+ The good news is you can install Oracle Java 7 easily and make it as the default source implementation of the Java platform. First, grab Oracle Java 7 directly fromOracle Java download page: ...
Then, depending on the version you want to install, execute one of the following commands: Oracle JDK 6 This is an old version but still in use. sudo apt-get install oracle-java6-installer Oracle JDK 7 This is the latest stable version. ...
The easiest option for installing Java is using the version packaged with Ubuntu. Specifically, this will install OpenJDK 8, the latest and recommended version. First, update the package index. sudo apt-get update Next, install Java. Specifically, this command will install the Java Runtime Envir...
That's pretty much all there is to installing Java on Ubuntu. If you want, you can set a default version of Java. To do this, type: sudo update-alternatives --config java. You'll then be able to see the version numbers, and if you want to choose one, press the number listed and...
Install jre on ubuntu Enter ‘Y’ or ‘y’ when prompted. Once finished, you will then have the latest Java Runtime Environment (JRE) package installed. You will be able to run Java based software. If however you need to install a specific version, you can write openjdk-8-jre or open...