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Sun, Aug 28, 2022 3:45 pm

Setting the path variable for Java

I had installed Java on a Windows 10 system as part of the installation of the Eclipse integrated development environment (IDE), which did not add the directory where the java.exe and javac.exe executable files were installed. I could temporarily add the directory where Eclipse installed those files to the path environment variable—see Running java from an Eclipse installation from the command line—but I didn't want to continue to have to do that every time I wanted to compile a Java program at a command prompt or run one from a command-line interface (CLI). So I added the path to the executable files to the system-wide path environment variable so it would be permanent and apply to all accounts on the system.

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Sun, Aug 28, 2022 1:47 pm

Setting JAVA_HOME for Gradle

While trying to set up Gradle, a software develpment build automation tool, on a Microsoft Windows 10 system, when I ran the gradle.bat file in the gradle bin directory, I saw the message below:

C:\Users\Jim\Downloads\gradle-7.5.1-bin\gradle-7.5.1\bin>gradle.bat

ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.

Please set the JAVA_HOME variable in your environment to match the
location of your Java installation.

C:\Users\Jim\Downloads\gradle-7.5.1-bin\gradle-7.5.1\bin>

I had installed Java with the Eclipse integrated development environment (IDE) previously and the java.exe executable was installed beneath the C:\Users\Jim\.p2\pool\plugins\org.eclipse.justj.openjdk.hotspot.jre.full.win32.x86_64_18.0.1.v20220515-1614\jre\ directory, so I created a JAVA_HOME environment variable pointing to that directory that applied to all accounts on the system. You can create a temporary JAVA_HOME environment variable for the account under which you are currently logged in from a command line interface (CLI) as noted at Running java from an Eclipse installation from the command line, but I wanted to create a permanent environment variable so I typed advanced system settings in the Windows "Type here to search" field and then clicked on View advanced system settings when I saw that listed.

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