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?

Stevoisiak · Accepted Answer · 2019-04-04T14:33:08.670

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

Java Control Panel (Windows)

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

Select About to view your current version of Java.

Command Line (Windows)

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

Type java -version and press Enter

Control Panel (Windows)

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

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

Terminal (MacOS)

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

Type java -version and press Enter

Sources

These methods show different versions even on the same machine. Some say v7.0, some say v1.7... — Mike B, Feb 19 '20 at 02:26
@mblakesley: that's not a difference; see https://stackoverflow.com/questions/2411288/java-versioning-and-terminology-1-6-vs-6-0-openjdk-vs-sun especially the second-high-voted answer https://stackoverflow.com/a/2411663/2868801 . For the 'modular' versions j9 up, starting in 2017, they finally dropped the '1.' prefix. — dave_thompson_085, Aug 27 '21 at 02:23

score 2 · Answer 2 · edited Aug 24 '20 at 18:30

2

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

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

edited Aug 24 '20 at 18:30

Worthwelle

4,538
11
21
32

answered Aug 24 '20 at 17:49

santosh

121
2

Nick Manitaras · Answer 3 · 2023-04-13T07:37:28.990

2

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

edited Apr 13 '23 at 07:37

answered Apr 11 '23 at 11:25

Nick Manitaras

21
3

score 1 · Answer 4 · answered Nov 03 '20 at 13:07

1

In windows open command prompt using cmd

Then, type the command java -version

Then, click enter. You will see your java version

answered Nov 03 '20 at 13:07

KFam

11
1

You're correct. However, this answer has been posted already by another user. – Aulis Ronkainen Nov 03 '20 at 15:30

score 0 · Answer 5 · answered Aug 27 '21 at 00:48

0

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.

answered Aug 27 '21 at 00:48

Kris Stern

161
1
4