Macro uni_jnihelpers::get_java_class

macro_rules! get_java_class {
    ($env:expr, $class_name:expr) => { ... };
}

At the point of instantiaction the macros creates global cache to access java class by name.

let class: Result<jni::objects::JClass<'static>, uni_jnihelpers::JniError>;
class = get_java_class!(jni_env, "my/class/full/Name");