Here are some useful download sites for Java developers. I’ve generally chosen the open source and/or free download version of tools as these are the ones I use most of the time.

The master copy of this page is at https://darwinsys.com/java/downloads.html

Note: W M L means Windows, Mac and Linux downloads. Default (or J) is pure-Java download. Some offer both!

Getting Java

Java runtime (for running applications and/or for running in the browser) W M L https://www.java.com

OpenJDK download: W M L https://jdk.java.net/

Oracle JDK: W M L https://www.oracle.com/technetwork/java/javase/downloads/ Licensing issues may apply!

OpenBSD/NetBSD/FreeBSD: in your system’s ports/packages tree:

# pkg_add -vU jdk-11 # e.g., on OpenBSD

Java Build Tools

For new projects you should probably use Maven as your build tool: https://maven.apache.org/ (download links for binary and source)

Or, for Maven with an easier-to-use config file, Kobalt https://beust.com/kobalt/ (Kobalt is introduced in Java Magazine)

Or maybe Gradle https://gradle.org

The oldest build tool, ant, is still available at https://ant.apache.org (download links for binary and source), but its use is in decline due to its extremely verbose build files; it’s been called "the assembly language of build tools".

Integrated Development Environments

The "big 3" Java IDEs all have plug-in support for lots of languages and formats. My personal favorite is Eclipse, but for Android work I have to use Android Studio, built on IntelliJ.

Eclipse Download: W M L https://www.eclipse.org/downloads/

IntelliJ IDea Download: https://www.jetbrains.com/idea/download/

NetBeans Download: https://netbeans.org/downloads/

Java EE App Server

WildFly https://wildfly.org/downloads/ WildFly is the project once known as "JBoss Application Server".

TomEE https://tomee.apache.org/ TomEE (pronounced like "Tommy") is the standard Apache Tomcat Java-powered web server, with JAR files already added into it to make it a full Java EE server.

GlassFish Download https://glassfish.java.net/download.html

Databases

PostgreSQL: W M L etc https://www.postgresql.org/download/

MySQL: W M L etc https://dev.mysql.com/downloads/mysql/

Web Services Code

Jersey examples: https://github.com/jersey/jersey/tree/master/examples

SoapUI download W M L https://www.soapui.org/downloads/latest-release.html

See Also

https://github.com/IanDarwin/javasrc (and other repos there) - General Java examples.