config default java version sudo update-alternatives --config java config path vim ~/.bashrc export JAVA_HOME=/path/to/your/java export PATH=$PATH:$JAVA_HOME/bin source ~/.bashrc check java environment variables echo $JAVA_HOME # Should display the Java installation path echo $PATH # Should...
1. 打开Ubuntu终端 首先,您需要打开Ubuntu的终端。在Ubuntu中,您可以通过快捷键Ctrl + Alt + T快速打开终端。 2. 更新Ubuntu软件包列表 在安装任何软件包之前,建议先更新Ubuntu的软件包列表,以确保您安装的是最新版本的软件包。在终端中输入以下命令来更新软件包列表: bash sudo apt update 3. 安装Java开发工具...
JAVA_HOME=/usr/java/jre1.7.0_67 由于ubuntu中可能会有默认的jdk,如openjdk,所以,为了使默认使用的是我们安装的jdk,还要进行如下工作。 执行 update-alternatives --install/usr/bin/java java /usr/java/jre1.7.0_67/bin/java300update-alternatives --install/usr/bin/javac javac /usr/java/jre1.7.0_6...
Javais a widely used programming language that has become an essential tool for developing and running applications on various platforms. If you are a developer or a system administrator using Ubuntu 20.04, you may need to install Java on your machine to run Java-based applications or develop Ja...
java -version You will receive an output similar to the one below. openjdk version "11.0.15" 2022-04-19 OpenJDK Runtime Environment (build 11.0.15+10-Ubuntu-0ubuntu0.22.04.1) OpenJDK 64-Bit Server VM (build 11.0.15+10-Ubuntu-0ubuntu0.22.04.1, mixed mode, sharing) ...
echo$JAVA_HOME If it returns the just set path, the environment variable has been set successfully. If it doesn't, please make sure you followed all steps correctly. Submitted by:Koen Vlaswinkel 来源:https://www.digitalocean.com/community/tutorials/how-to-install-java-on-ubuntu-with-apt-get...
export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib export PATH=${JAVA_HOME}/bin:$PATH 保存退出,然后输入下面的命令来使之生效 source~/.bashrc 4.配置默认JDK 由于一些Linux的发行版中已经存在默认的JDK,如OpenJDK等。所以为了使得我们刚才安装好的JDK版本能成为默认的JDK版本,我们还要进行下面的配置。
Command 'java' not found, but can be installed with: sudo apt install default-jre # version 2:1.11-72build1, or sudo apt install openjdk-11-jre-headless # version 11.0.14+9-0ubuntu2 sudo apt install openjdk-17-jre-headless # version 17.0.2+8-1 ...
JAVA { string version string home string environment_variable } SYSTEM { string os string package_manager string PATH } JAVA ||--o|| SYSTEM : uses 结语 通过上述步骤,您已经成功在Ubuntu系统上安装了Java 11,并进行了必要的环境配置。安装完成后,您可以开始学习Java编程,或是使用Java进行开发工作。希望...
http://itsfoss.com/install-java-ubuntu-1404/ Check if Java is already installed in UbuntuOpen a terminal and use the following command: java -versionIf you see an output like the one below, it means you don’t have Java installed: ...