Editing Generic programming (section)

====Generics in Java====<!-- This section is linked from [[Comparison of Java and C++]] -->
{{Main|Generics in Java}}

Support for the ''generics'', or "containers-of-type-T" was added to the [[Java programming language]] in 2004 as part of J2SE 5.0. In Java, generics are only checked at compile time for type correctness. The generic type information is then removed via a process called [[type erasure]], to maintain compatibility with old [[JVM]] implementations, making it unavailable at runtime.{{sfn|Bloch|2018|loc=§Item 28: Prefer lists to arrays|p=126}} For example, a <code>List&lt;String&gt;</code> is converted to the raw type <code>List</code>. The compiler inserts [[Type conversion|type casts]] to convert the elements to the <code>String</code> type when they are retrieved from the list, reducing performance compared to other implementations such as C++ templates.