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What is the relationship of the Apache Tomcat open-source application server to the J2EE SDK?

April 26, 2017Apache application j2ee relationship SDK server Tomcat

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What is the relationship of the Apache Tomcat open-source application server to the J2EE SDK?

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Tomcat is based on the original implementation of the JavaServer Pages (JSP) and Java Servlet specifications, which was donated by Sun to the Apache Software Foundation in 1999. Sun continues to participate in development of Tomcat at Apache, focusing on keeping Tomcat current with new versions of the specifications coming out of the Java Community Source Process. Sun adapts and integrates the then-current Tomcat source code into new releases of the J2EE SDK. However, since Tomcat evolves rapidly at Apache, there are additional differences between the JSP and Servlet implementations in the J2EE SDK and in Tomcat between J2EE SDK releases. Tomcat source and binary code is governed by the ASF license, which freely allows deployment and redistribution.