They are not updated with the latest security patches and are not recommended for use in production. WARNING: These older versions of the JRE and JDK are provided to help developers debug issues in older systems. The JDK includes tools useful for developing and testing programs written in the Java programming language and running on the Java TM platform. The JDK is a development environment for building applications using the Java programming language. Java SE 8 Archive Downloads (JDK 8u202 and earlier)