How do I check what version of Java I have installed?

Question

I want to check what version of Java is installed on my PC before installing the latest Java update. How can I do this?

Answer 1

You can check your version of Java with any of the following methods.

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Java Control Panel (Windows)

1. Open the Start Menu and select Control Panel.
2. From the Control Panel, select Programs -> Java to open the Java Control Panel.

3. Select About to view your current version of Java.

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Command Line (Windows)

1. Press ⊞ Win+R and type cmd to open the Command Prompt.

2. Type java -version and press Enter

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Control Panel (Windows)

Note: This method may give inaccurate results if Java's PATH has not been updated.

1. Open the Start Menu and select Control Panel.
2. From the Control Panel, select Programs -> Programs and Features.
3. Scroll down the list of programs until you find the most recently installed version of Java

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Terminal (MacOS)

1. In the Finder, search for Terminal and launch Terminal.app

2. Type java -version and press Enter

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Sources

• Tech FAQ - How to Check the Java Version
• Columbia - How to check what Java version you have

Answer 2

1. Open CMD (In Windows click Start then type cmd, Command Prompt or PowerShell) and execute the following commands.
2. For multiple java installations: wmic product where "name like 'Java%'" get name, version
3. For default java installation: java -version

Answer 3

The methods below will help you to check the Java version in Linux:

• ps -ef|grep -i JAVA
• java -version
• which java

Answer 4

In windows open command prompt using cmd

Then, type the command java -version

Then, click enter. You will see your java version

Answer 5

Checking Java version on Windows PowerShell, simply use the command:

java -version

Be careful there is only one dash in the command to be run.