How To Set Java In Environment Variable Windows 10

Details: Written by; Last Updated on 27 April 2022 | Print Electronic mail

In this article, you will empathise the details nigh JAVA_HOME environment variable and how to set information technology on Windows 10.

What is JAVA_HOME?

Past convention, JAVA_HOME is the proper noun of an environment variable on the operating system that points to the installation directory of JDK (Java Development Kit) or JRE (Java Runtime Environs) – thus the name Coffee Home. For example:

JAVA_HOME = c:\Program Files\Java\jdk1.viii.0_201

Why is JAVA_HOME needed?

To develop Java applications, you need to update the PATH surroundings variable of the operating organization so development tools similar Eclipse, NetBeans, Tomcat… tin be executed because these programs need JDK/JRE to function. And then the PATH environment variable should include JAVA_HOME:

PATH = Other Paths + JAVA_HOME

Other paths are fix by various programs installed in the operating system. If thePATH environment variable doesn't incorporate a path to JRE/JDK, a Java-based program might not be able to run. For example, typing java in the command prompt showing this fault:

'java' is not recognized as an internal or external control, operable program or batch file.

error java command

Or Eclipse will fail to launch:

Eclipse launch error no Java home found

How to prepare JAVA_HOME on Windows 10

Here are the visual steps to properly set value for the JAVA_HOME and update thePATH surround variables in guild to setup Java development environment on your estimator:

one. Firstly, you need to identify the Java home directory, which is typically under C:\Programme Files\Javadirectory. Open My Computer and navigate to this directory, you volition run into:

Java home directory

Here, the home of JDK is under C:\Program Files\Java\jdk1.80_201. The version number may vary, depending on the JDK you lot installed.

ii. Open the Organization Surroundings Variables dialog by typing environment in the search area on Start bill of fare. Click the suggested item Edit the organization surroundings variables:

start menu open system environment variable dialog

The System Backdrop dialog appears, click the button Environment Variables.

System properties dialog

Then you will see this dialog:

Environment Variables dialog

three. Create the JAVA_HOME environment variable past clicking the New push button at the lesser. In the New Organisation Variable form, enter the name and value every bit follows:

New JAVA HOME system variable

Click OK, and you will encounter the JAVA_HOME variable is added to the list.

4. Update the PATH system variable. In the Environment Variables dialog, select the Path variable and click Edit:

Edit Path variable

And so in the Edit surroundings variable dialog, double click on the empty row only beneath the last text line, and enter %JAVA_HOME%\bin as follows:

Edit Path variable for Java home

The per centum signs tell Windows that it refers to a variable – JAVA_HOME, and the \bin specifies the location of coffee.exe and javac.exe programs which are used to run and compile Coffee programs, likewise equally other tools in the JDK.

Click OK button to close all the dialogs, and y'all're all set. Now y'all can open Eclipse or NetBeans to verify. Or open a command prompt and type in javac –version, you should run across:

verify java home

NOTES:

You can add the path to the bin directory of Java home direct into the PATH variable. Simply it's strongly recommend to follow the above steps to setup a JAVA_HOME variable considering many Java programs depend on it.

When you installed a JDK, you might not need to update the organization variable because the installer already did it for y'all.

Learn more:

How to prepare environment variables for Java using command line
How to write, compile and run a hello world Java program for beginners
What are JVM, JRE and JDK
How to check Java version

Virtually the Author:

Nam Ha Minh is certified Java programmer (SCJP and SCWCD). He started programming with Java in the time of Java 1.4 and has been falling in love with Coffee since and so. Make friend with him on Facebook and watch his Java videos you lot YouTube.

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