- 1 year ago
How can I run java on Windows?
To run Java on Windows, you need to follow these steps:
Install Java Development Kit (JDK): Download the JDK installer for Windows from the official Oracle website (https://www.oracle.com/java/technologies/javase-jdk11-downloads.html) or an alternative OpenJDK distribution. Run the installer and follow the instructions to complete the installation. Note the installation directory of the JDK.
Set Java Environment Variables: After installing the JDK, you need to set the
JAVA_HOME
environment variable and add the JDK'sbin
directory to the system'sPATH
variable. This allows Windows to locate the Java executable. Here's how to do it:- Open the Start menu, right-click on "Computer" or "This PC," and select "Properties."
- Click on "Advanced system settings" or "Advanced" in the System Properties window.
- In the System Properties window, click on the "Environment Variables" button.
- In the Environment Variables window, under "System variables," click "New" to add a new variable.
- Set the variable name as
JAVA_HOME
and the variable value as the installation directory of the JDK (e.g.,C:\Program Files\Java\jdk-11
). - Select the "Path" variable from the list of System variables and click "Edit."
- Append
;%JAVA_HOME%\bin
to the existing value. Make sure to include a semicolon (;) before%JAVA_HOME%\bin
. - Click "OK" to save the changes and close the windows.
Open Command Prompt: Open the Command Prompt by typing "cmd" in the Windows search bar and selecting "Command Prompt" from the search results. This will open a new Command Prompt window.
Verify Java Installation: To verify that Java is installed correctly, run the following command in the Command Prompt:
java -version
This command should display the installed Java version and other related information. If you see the version details, it means Java is successfully installed.
Run Java Applications: To run a Java application or execute a Java class, navigate to the directory containing the Java source code or compiled
.class
files using thecd
command in the Command Prompt. Once inside the correct directory, you can use thejava
command followed by the class name or the name of the Java file to run the program. For example:java HelloWorld
This command executes the
HelloWorld
class or file, assuming it is present in the current directory.
By following these steps, you should be able to install Java and run Java applications on your Windows system.