在Ubuntu环境下安装多个JDK版本也是很常见的,今天我们以Open JDK8与Open JDK11为例来介绍一下多JDK版本如何切换。 在目录/etc/jvm/中创建一个脚本文件,内容如下,并命名为switch-java-version.sh #The set-default-java program is used to switch the Java version
If you have multiple Java versions installed on your Ubuntu system, you can check which version is set as the default one by typing:java -versionCopy To change the default version, use the update-alternatives command: sudo update-alternatives --config javaCopy...
How to install Sun Java in Ubuntu 10 . 04Name, UserMe, RememberPassword, ResetHelp, ForumPosts, TodayCouncil, ForumReply, NewTools, ThreadModes, DisplayLynx, Lucid
If you are planning to use the current version of Java, which at the time of this writing is Openjdk 11.0.18 you can use the following two commands to either install the default JRE which stands for Java Runtime Envoirement or the JDK which stands for Java Developement Kit and is usuall...
sudo apt install default-jdk Once the installation is completed you can verify the Java version using the following command. java -version You will receive an output similar to the one below. javac 11.0.15 Now you have installed Java Development Kit on your Ubuntu 22.04. ...
Option 1 — Installing the Default JRE/JDK One option for installing Java is to use the version packaged with Ubuntu. By default, Ubuntu includes Open JDK 11, which is an open-source variant of the JRE and JDK. To install the OpenJDK version of Java, first update youraptpackage index: ...
Checking Java Version To find out which Java version is installed on your system, run the java -version command:java -versionCopy The command will display the default Java version: openjdk 11.0.8 2020-07-14 OpenJDK Runtime Environment (build 11.0.8+10-post-Ubuntu-0ubuntu120.04) OpenJDK ...
To set JAVA_HOME, open your terminal and typeexport JAVA_HOME=/path/to/java. Replace/path/to/javawith the actual path to your Java installation. How do I permanently set the JAVA_HOME variable in Ubuntu? To permanently set JAVA_HOME, add the export command to your~/.bashrcor~/.profile...
java --version javac --version Verify Java in Ubuntu If the installation was successful, you should see the version of Java you installed displayed in the terminal. Managing Multiple Java Versions in Ubuntu Having multiple versions ofJavainstalled allows you to test and develop applications using ...
java - versionCommand 'java' not found, but can be installed with: sudo apt install default-jre If the command indicates that Java is not found, proceed with the next steps. Update Ubuntu’s package listing As with all Ubuntu software installs, it’s a good idea to update your Ubuntu ...