Give official website Download: https://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
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1. First, look at your downloaded oracle official website jdk file original name: JDK file back just downloaded name marked x64 on behalf of a 64-bit JDK, if not marked, you are 32-bit JDK (must be guaranteed to file official website to download Formerly known as Oh); of course, this is just the official website to download the file, not including the file name manually change, such as: dk-8u102-windows-i586 is what 32-bit or 64-bit is not marked x64, it means that 32-bit?. 64 are later identified with x64; is 32 bits with no;
2. Install the JDK, pay attention to change the installation directory. (This is my directory structure)
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3. With environment variables (the purpose of)
Into the system (the shortcut key is win + pause), then Advanced System Settings
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Into the environment configuration
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Variable names generally written JAVA_HOME, variable values to fill in the bin directory of the java installation directory (pictured above), can be determined
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To find the path, click Edit, shortcut keys Ctrl + end, so that the mouse cursor to the last face, and then add an English ";" in the end, add% JAVA_HOME% \ bin (ps: Why, equivalent to a reference in the path here just the new java JAVA_HOME path, because the path to store a lot of path execution path of development tools here, later want to change is not easy to find, why they lead JAVA_HOME, since as long as change JAVA_HOME on it)
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With over here, we win + R shortcut to a DOS window to look at the command java -version version number, if it means the following figure with success, to mention a mouth here: with the global environment is to be able to access the computer java . Thank you
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