Installation configuration for Oracle JDK under Mac

I used to use the direct command. Brew Cask install Java, install the following version of Java:

?  ~  $ Ls-lh ' which Java ' lrwxr-xr-x  1 root  wheel    74B 19:07/usr/bin/java Works/javavm.framework/versions/current/commands/java?  ~  $ Java-versionjava Version "1.8.0_51" Java (tm) SE Runtime Environment (build 1.8.0_51-b16) Java HotSpot (TM) 64-bit SE RVer VM (build 25.51-b03, Mixed mode)

I wanted to install JDK1.7, so I downloaded jdk-7u80-macosx-x64.dmg from Oracle.

Next do not want to write, reproduced from http://www.bjhee.com/mac-jdk.html, but according to the situation of cyper made adjustments:
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The installation of Oracle JDK in Mac system is simple, but some of them are different from Linux, so make a record. This example uses JDK 1.7, also Java SE 7, as an example. However, different versions are basically the same way of installation.

1. Download JDK

Download the JDK from the official website "http://www.oracle.com/technetwork/java/javase/downloads/index.html". Remember that it is the JDK, do not download the JRE, this will lack a lot of developed libraries. Select the Mac OS x package, in this case the "jdk-7u80-macosx-x64.dmg" file is downloaded.

1. Installing the JDK

DMG Package installation is quite simple, just double-click the DMG file, follow the prompts to continue. After installation, you can find the Java settings in System Preferences. Here, we don't need to modify any settings.

2. Configuring Environment variables

We are going to add the Java command to the system environment variable "PATH". On Mac, Java is installed by default in the "/library/java/javavirtualmachines/jdk1.7.0_80.jdk/contents/home/" directory. Note that the middle "jdk1.7.0_80.jdk" directory will change depending on the version.

Open the ". Bash_profile" file in the user directory

$ VI ~/.bash_profile

Add the following configuration

0 S	Export Java_home =/library/java/javavirtualmachines/jdk1.7.0_80.jdk/contents/home ExportPATH=$Java_home/bin:$PATH

Enter the following command to make the configuration take effect immediately

$ source ~/.bash_profile

After seeing the information below, it proves that the JDK has been installed successfully.

?  ~  $ Java-versionjava Version "1.7.0_80" Java (tm) SE Runtime Environment (build 1.7.0_80-b15) Java HotSpot (TM) 64-bit SE RVer VM (build 24.80-b11, mixed mode)?  ~  $

Installation configuration for Oracle JDK under Mac