How to find the java update version?

Question

I have a jre installed installed in my windows.

When I use the command java -version

I get the output -

java version "1.7.0"
Java(TM) SE Runtime Environment (build 1.7.0-b147)
Java HotSpot(TM) Client VM (build 21.0-b17, mixed mode)

I can see only the major version 1.7. How to know which version of JRE update it is ?

Its already showing Java(TM) SE Runtime Environment (build 1.7.0-b147) What else you need? — Subodh Joshi
– Subodh Joshi, Commented Sep 11, 2015 at 14:35
There is no 147 in jre 1.7 update versions . And I thought b147 is the build number. — J V
– J V, Commented Sep 11, 2015 at 14:37

user1438038 · Accepted Answer · 2015-09-11 14:43:45Z

9

Calling java -version will give you the installed version, including the update number (here: 51):

java version "1.7.0_51"
Java(TM) SE Runtime Environment (build 1.7.0_51-b13)
Java HotSpot(TM) 64-Bit Server VM (build 24.51-b03, mixed mode)

It seems like you have the base version installed, so there is no update number:

java version "1.7.0"
Java(TM) SE Runtime Environment (build 1.7.0-b147)
Java HotSpot(TM) Client VM (build 21.0-b17, mixed mode)

answered Sep 11, 2015 at 14:43

user1438038

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Comments

Techidiot · Accepted Answer · 2015-09-11 14:40:07Z

3

I guess the build gives you the update you have.

You can try this as well-

java -fullversion

Version number translation: 1.6.0_34 is, in English, Java 6 Update 34

answered Sep 11, 2015 at 14:40

Techidiot

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3 Comments

J V Over a year ago

That gives me -- java full version "1.7.0-b147"

Einstein Over a year ago

I think this means that you have the release version of Java 7

Techidiot Over a year ago

Just a simple "Google" of your version string will give you the answer - 404techsupport.com/2011/07/java-7-0-download

StephaneM · Accepted Answer · 2015-09-11 14:44:47Z

2

Looking at this page from the release note: http://www.oracle.com/technetwork/java/javase/jdk7-naming-418744.html

It seems you have the 1st java 7 version.

Oracle periodically makes updates available and, when an update occurs, the version string will also include the update version number. So, JDK 7 update 4, or JDK 7u4, will have the version string "1.7.0_4".

answered Sep 11, 2015 at 14:44

StephaneM

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Einstein · Accepted Answer · 2015-09-11 14:46:18Z

0

Normally the jre folder is named something like 1.VersionNumber.0_UpdateNumber

For 64 bit you can find this folder under C:\Program Files (x86)\Java

If your version Number just look like this: 1.VersionNumber.0, this means that you have the first release of given Java Version.

edited Sep 11, 2015 at 14:46

answered Sep 11, 2015 at 14:36

Einstein

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1 Comment

J V Over a year ago

The problem is somebody renamed the folder to jre.

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