JEP 238: Multi-Release JAR Files extends the JAR file format to allow multiple, Java-release-specific versions of class/resource files to coexist in the same archive. This upgrade makes it easier ...

Packaging Java web apps as WARs Like JAR, the Web Application ARchive (WAR), the default format for packaging Java web apps, isn't particularly special. When the Servlet and JavaServer Pages ...

Embedded Tomcat example Another key element of an embedded Tomcat server is the executable file. As long as a computer has the JRE installed and JAVA_HOME configured, you can run an embedded Tomcat ...

Oracle says that starting with April 18, 2017, Java (JRE) will treat all JAR files signed with the MD5 algorithm as unsigned, meaning they'll be considered insecure and blocked from running.