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Guide to GNU gcj

10.9.2 Static methods

Static Java methods are invoked in CNI using the standard C++ syntax, using the :: operator rather than the . operator.

For example:

jint i = java::lang::Math::round((jfloat) 2.3);

C++ method definition syntax is used to define a static native method. For example:

#include <java/lang/Integer> java::lang::Integer* java::lang::Integer::getInteger(jstring str) { ... }