+void be_java_coal_set_debug(be_java_coal_t *c, int n, const char *dbg)
+{
+#if 0
+ JNIEnv *jni = c->env->jni;
+ jmethodID mid = c->mth_ids[mth_set_debug];
+ jstring str;
+
+ str = (*jni)->NewStringUTF(jni, dbg);
+ CHECK(c->env);
+ (*jni)->CallVoidMethod(jni, c->obj, mid, (jint) n, str);
+ CHECK(c->env);
+#endif
+}
+
+void be_java_coal_forbid_color(be_java_coal_t *c, int n, int col)