Set Java PATH



PATH Environment Variable - Windows

You can run Java applications just fine without setting the PATH environment variable. Or, you can optionally set it as a convenience.
Set the PATH environment variable if you want to be able to conveniently run the executables from any directory without having to type the full path of the command. If you do not set the PATH variable, you need to specify the full path to the executable every time you run it, such as:
C:\Java\jdk1.8.0\bin\javac MyClass.java
The PATH environment variable is a series of directories separated by semicolons (;). Microsoft Windows looks for programs in the PATH directories in order, from left to right. You should have only one bin directory for the JDK in the path at a time (those following the first are ignored), so if one is already present, you can update that particular entry.
The following is an example of a PATH environment variable:
C:\Java\jdk1.8.0\bin;C:\Windows\System32\;C:\Windows\;C:\Windows\System32\Wbem
It is useful to set the PATH environment variable permanently so it will persist after rebooting. To make a permanent change to the PATH variable, use the System icon in the Control Panel. The precise procedure varies depending on the version of Windows:

Windows 7:
  1. From the desktop, right click the Computer icon.
  2. Choose Properties from the context menu.
  3. Click the Advanced system settings link.
  4. Click Environment Variables. In the section System Variables, find the PATH environment variable and select it. Click Edit.
  5. In the Edit System Variable window, specify the value of the PATH environment variable. Click OK. Close all remaining windows by clicking OK.
 
Windows 10
  1. From the desktop, right click the This PC icon.
  2. Choose Properties from the context menu.
  3. Click the Advanced system settings link.
  4. Click Environment Variables. In the section System Variables, find the PATH environment variable and select it. Click Edit.
  5. In the Edit environment variable window, click on New and specify the value of the PATH environment variable. Click OK. Close all remaining windows by clicking OK.

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