To use Java 21, or build applications on an older version of the Eclipse IDE, you must install your preferred version of Java separately and register it as a Java runtime in Eclipse’s preferences ...

Which Java IDE is best? Compare IntelliJ IDEA , Eclipse, and NetBeans for features, usability, and compatibility with your favorite tools and frameworks.

A JRE or JDK must be available The only prerequisite to install Eclipse is a modern Linux or Windows operating system and a compatible JDK installation, with preference given to Java 8 versions and ...