Linux下安装Java环境

太过爱你忘了你带给我的痛 2022-09-26 03:17 197阅读 0赞

一：今天研究一下在Linux下安装Java环境，以下为Oracle官网提示，分为tar包和yum安装两种方式。
    Installation of the 64-bit JDK on Linux Platforms
    This procedure installs the Java Development Kit (JDK) for 64-bit Linux, using an archive binary file (.tar.gz).
    These instructions use the following file:
    <span style="white-space:pre">	</span>jdk-7u<version>-linux-x64.tar.gz
    1. Download the file. Before the file can be downloaded, you must accept the license agreement. The archive binary can be installed by anyone (not only root users), in any location that you can write to. However, only the root user can install the JDK into the system location.
    2. Change directory to the location where you would like the JDK to be installed. Move the .tar.gz archive binary to the current directory.
    3. Unpack the tarball and install the JDK.
      # tar zxvf jdk-7u<version>-linux-x64.tar.gz
    The Java Development Kit files are installed in a directory called jdk1.7.0_<version> in the current directory.
    4. Delete the .tar.gz file if you want to save disk space.
    Installation of the 64-bit JDK on RPM-based Linux Platforms
    This procedure installs the Java Development Kit (JDK) for 64-bit RPM-based Linux platforms, such as Red Hat and SuSE, using an RPM binary file (.rpm) in the system location. You must be root to perform this installation.
    These instructions use the following file:
        jdk-7u<version>-linux-x64.rpm
    1. Download the file. Before the file can be downloaded, you must accept the license agreement.
    2. Become root by running su and entering the super-user password.
    3. Uninstall any earlier installations of the JDK packages.
        # rpm -e <package_name>
    4. Install the package.
    To upgrade a package:
        # rpm -Uvh jdk-7u<version>-linux-x64.rpm
    5. Delete the .rpm file if you want to save disk space.
    6. Exit the root shell. No need to reboot.
    二：配置环境变量
    打开/etc/profile（vim /etc/profile）
    在最后面添加如下内容：
    JAVA_HOME=/usr/java/jdk1.7.0_79
    CLASSPATH=.:$JAVA_HOME/lib.tools.jar
    PATH=$JAVA_HOME/bin:$PATH
    export JAVA_HOME CLASSPATH PATH
    四：配置文件重新生效 
        # source /etc/profile
    本文参考 :http://docs.oracle.com/javase/7/docs/webnotes/install/linux/linux-jdk.html#install-64-rpm