[{“Name”:“Java SE 1.1”,“GroupName”:null},{“Name”:“Java SE 1.2”,“GroupName”:null},{“Name”:“Java SE 1.3”,“GroupName”:null},{“Name”:“Java SE 1.4”,“GroupName”:null},{“Name”:“Java SE 5”,“GroupName”:null},{“Name”:“Java SE 6”,“GroupName”:null},{“Name”:“Java SE 7”,“GroupName”:null},{“Name”:“Java SE 8”,“GroupName”:null},{“Name”:“Java SE 9 (Early Access)”,“GroupName”:null}]
The Symantec JIT compiler was available in the Sun Java from 1.1.5 onwards, but it had problems.
The Hotspot JIT compiler was added to Sun Java in 1.2.2 as a plugin. In Java 1.3, JIT was enabled by default.
(Source: http://stackoverflow.com/questions/692136/when-did-java-get-a-jit-compiler)