r##"impl ControlStateChange for JavaCallback {
    #[allow(unused_mut)]
    fn on_state_changed(&self, a0: ControlItem, a1: bool) {
        swig_assert_eq_size!(::std::os::raw::c_uint, u32);
        swig_assert_eq_size!(::std::os::raw::c_int, i32);
        let env = self.get_jni_env();
        if let Some(env) = env.env {
            let mut a0: jobject = <jobject>::swig_from(a0, env);
            let mut a1: jboolean = if a1 { 1 as jboolean } else { 0 as jboolean };
            unsafe {
                (**env).CallVoidMethod.unwrap()(
                    env,
                    self.this,
                    self.methods[0usize],
                    a0,
                    a1 as ::std::os::raw::c_uint,
                );
                if (**env).ExceptionCheck.unwrap()(env) != 0 {
                    log::error!(concat!(
                        stringify!(on_state_changed),
                        ": java throw exception"
                    ));
                    (**env).ExceptionDescribe.unwrap()(env);
                    (**env).ExceptionClear.unwrap()(env);
                }
            };
        }
    }
}"##;