java:field

(java:field class-or-object "fieldName")

Reads a field by reflection: with a class-name string it reads a static field (such as a constant), and with a java object it reads that instance's field. Returns the marshalled value. Part of the JVM-only java interop package — available on the interpreter and in JVM-compiled classes, not on the WASM backend. See the Java interop guide.

The static constant Integer.MAX_VALUE is read and marshalled to a rontolisp integer.