Eclipse Temurin

ApplicationEclipse Adoptium

Also called adoptium, adoptopenjdk, temurin, openjdk

Eclipse AdoptiumProductivity

A popular OpenJDK build from Eclipse Adoptium. The runtime is java.exe. It is not Oracle Java as the only option, and it is not a browser plugin anymore.

What you need to know

Temurin is an OpenJDK build. java.exe is not a browser plugin.

Eclipse Temurin is Adoptium's OpenJDK. java.exe is the runtime. Oracle Java is a different vendor build. The Eclipse IDE is eclipse.exe. The old browser plugin is gone.

What is it?: Popular OpenJDK build
Only Oracle Java?: No. Temurin is another JDK
Browser plugin?: No. That era is over

Feex says

If java.exe is on PATH, I would run java -version and read the Temurin or Oracle string. I would not hunt a browser plugin. That plugin era is over.

What is Eclipse Temurin?

Eclipse Temurin is Adoptium's OpenJDK distribution. java.exe runs Java programs. It is not Oracle's JDK exclusively, and it is not the Eclipse IDE.

If you have never used it

If a README said install a JDK, Eclipse Temurin from adoptium.net is a common OpenJDK build. java.exe is the runtime. It is not a browser plugin. Oracle also ships JDKs. Those are a different vendor and license. eclipse.exe is the IDE, not this runtime.

What is it used for?

Run Java applications

java.exe starts a JVM. A leftover java.exe in System32 from an old Oracle install can steal PATH.

Compile with a JDK

javac.exe comes with the JDK image. A JRE-only folder will not compile.

Point IDEs at this home

JAVA_HOME to the Temurin folder. IntelliJ and Eclipse can each pick a different JDK.

Who is it for?

People who need a free OpenJDK on Windows
Shops that left Oracle Java and moved to Adoptium
Anyone who thinks java.exe is still a browser add-on

Current status

Eclipse Temurin (2017) is a current java runtime and jdk from Eclipse Adoptium. The vendor still points Windows users at https://adoptium.net/.

How old is it?

AdoptOpenJDK started in 2017 after Oracle changed Java licensing. The project moved to Eclipse Adoptium and the Temurin builds. The old Java browser plugin is gone. A 2008 Java.com plugin guide is history.

Versions

Major channels first. Exact build numbers are not all verified here.

LTS JDK

Latest

System requirements

Values follow the publisher's public guidance. Workload still changes the real need.

Minimum

Minimum system requirements
Operating system	A current 64-bit Windows 10 or Windows 11 release, per Adoptium
RAM	The JRE is modest. The app heap is what you configure

Resource profile

CPU demand: Follows what you open inside the app
RAM demand: Follows documents, tabs, or libraries

Installed processes

These executables belong to this product when it is installed.

Installed processes
java.exe	Temurin Java runtime for that install
javac.exe	Compiler when you installed a JDK, not only a JRE

Startup components

Windows does not add java.exe as an inbox service. A vendor app or scheduled task can start a JVM.

File locations

Common Eclipse Temurin locations
Typical install	C:\Program Files\Eclipse Adoptium\jdk-*\

File formats

JARCLASS

Common problems

Several java.exe copies

Oracle, Temurin, and a vendor JRE can all be named java.exe. where.exe java names which one launched.

People open Eclipse IDE to "install Java"

adoptium.net is the JDK. eclipse.org/downloads is the IDE.

Getting unstuck

java -version and where.exe java

Temurin should say Eclipse Adoptium or Temurin. An Oracle string is a different install.

Set JAVA_HOME to the Temurin folder

IDEs and Maven read that variable. A Store Python alias will not help.

Install from adoptium.net, not a random JDK pack

Adoptium hosts the MSI and API. A Java runtime toolbar bundle is junk.

Alternatives

Oracle JDK if your shop requires it. Microsoft Build of OpenJDK and Amazon Corretto are other OpenJDK builds. Eclipse IDE is not a substitute runtime.

Official help and downloads

Start with the vendor. Random exe sites are not a support channel.

Official contacts
Download	adoptium.net/ Official installer or vendor page
Help	adoptium.net/docs/ Vendor support
Official site	adoptium.net/ Start here, not a random exe host
Temurin releases	adoptium.net/temurin/releases/ LTS and latest JDK builds

Related hardware

The JVM heap is what you set. A 64-bit PC is required for current JDKs. A GPU is only relevant if that Java app uses one.

Technical details

Vendor version numbers change. This article does not pin a build.

Sources and verification

Reviewed by Feex editorial. Last verified August 2026 Status: Feex Reviewed. How we research.

Eclipse Temurin official site · Vendor product page
Eclipse Temurin help · Vendor support
Adoptium documentation · How Temurin is built and installed
Foxhole process map · First-party samples on Windows PCs. Not a lab benchmark.

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