You can run Java threads in parallel on multiple CPUs, but only if you use a native-threads library for Java instead of the green threads option. (The green thread implementation does all thread ...

Virtual threads take the responsibility for allocating system resources out of your application code and into the JVM. Here's a first look at virtual threads in Java 21.

Java applications that can benefit directly from multi-CPU resources include application servers such as BEA's Weblogic, IBM's Websphere, or the open-source Glassfish and Tomcat application server.

The benefits of virtual threads. Unlike traditional OS threads, Java virtual threads are exceptionally lightweight in both memory footprint and context-switching overhead. A Java application can ...