Tomcat may refer to:

Animals

Science and technology

Media

Apache Tomcat, often referred to as Tomcat, is an open-source web server developed by the Apache Software Foundation (ASF). Tomcat implements several Java EE specifications including Java Servlet, JavaServer Pages (JSP), Java EL, and WebSocket, and provides a "pure Java" HTTP web server environment for Java code to run in.

Tomcat is developed and maintained by an open community of developers under the auspices of the Apache Software Foundation, released under the Apache License 2.0 license, and is open-source software.

Components

Tomcat 4.x was released with Catalina (a servlet container), Coyote (an HTTP connector) and Jasper (a JSP engine).

Catalina

Catalina is Tomcat's servlet container. Catalina implements Sun Microsystems' specifications for servlet and JavaServer Pages (JSP). In Tomcat, a Realm element represents a "database" of usernames, passwords, and roles (similar to Unix groups) assigned to those users. Different implementations of Realm allow Catalina to be integrated into environments where such authentication information is already being created and maintained, and then use that information to implement Container Managed Security as described in the Servlet Specification.

Tomcat (German: Kater) is a 2016 Austrian drama film directed by Händl Klaus. It was shown in the Panorama section at the 66th Berlin International Film Festival.

Cast

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"Mean" is a song written and recorded by American country pop singer-songwriter Taylor Swift for her third studio album, Speak Now (2010). Produced by Swift alongside Nathan Chapman, the song was sent to country radio in the United States on March 13, 2011, as the third single from Speak Now. "Mean" garnered mixed to positive reviews from critics for its lyrical detail and profound country sound. The song received commercial success in the United States and Canada, debuting at number 11 on the Billboard Hot 100 and number ten on the Canadian Hot 100. The song also appeared on the Australian Singles Chart at number 45.

The song's accompanying music video was directed by Declan Whitebloom, who developed the concept together with Swift. It received mixed reviews from critics who perceived ambivalent messages in the video, despite the prevalent self-empowerment and anti-bullying themes. "Mean" was performed for the first time by Swift at the 46th Annual Academy of Country Music Awards on April 3, 2011. The song won the Grammy Awards for Best Country Song and Best Country Solo Performance at the 54th Grammy Awards.Rolling Stone Magazine ranked Mean as #24 on their list of the 100 greatest country songs of all time. Taylor Swift was tied up in the music video for mean.

In mathematics and statistics, the arithmetic mean (pronunciation: /ˌærɪθˈmɛtɪk ˈmiːn/, stress on third syllable of "arithmetic"), or simply the mean or average when the context is clear, is the sum of a collection of numbers divided by the number of numbers in the collection. The collection is often a set of results of an experiment, or a set of results from a survey. The term "arithmetic mean" is preferred in some contexts in mathematics and statistics because it helps distinguish it from other means, such as the geometric mean and the harmonic mean.

In addition to mathematics and statistics, the arithmetic mean is used frequently in fields such as economics, sociology, and history, and it is used in almost every academic field to some extent. For example, per capita income is the arithmetic average income of a nation's population.

While the arithmetic mean is often used to report central tendencies, it is not a robust statistic, meaning that it is greatly influenced by outliers (values that are very much larger or smaller than most of the values). Notably, for skewed distributions, such as the distribution of income for which a few people's incomes are substantially greater than most people's, the arithmetic mean may not accord with one's notion of "middle", and robust statistics, such as the median, may be a better description of central tendency.

Mean is the fifth and final album by the California-based hard rock band Montrose and released in 1987. It has much more of a glam metal sound than previous Montrose albums.

According to Ronnie Montrose, singer Johnny Edwards and drummer James Kottak were still officially in the band Buster Brown at the time of the recording of Mean. They later played together in the first line-up of the band Wild Horses.

Guitarist Ronnie Montrose and bassist Glenn Letsch played together in the band Gamma both before and after this album.

It features the song "M for Machine" which was written as a potential song for the 1987 American cyberpunk action film RoboCop, directed by Paul Verhoeven.

Drummer James Kottak would go on to join the original line-up of hard rock/glam metal band Kingdom Come, remaining with that band during their most commercially successful period, prior to reconnecting with Edwards in Wild Horses. After leaving Wild Horses, Edwards became the frontman for Foreigner on their 1991 album, Unusual Heat.