||This article does not cite any sources. (December 2009)
Under the Whyte notation for the classification of steam locomotives, 2-12-2 represents the wheel arrangement of two leading wheels on one axle (usually in a leading truck), twelve powered and coupled driving wheels on six axles, and two trailing wheels on one axle (usually in a trailing truck).
Other equivalent classifications are:
This wheel arrangement is infrequently called "Javanic", after the use of large 2-12-2Ts in Java.