3 files changed, 21 insertions, 0 deletions
diff --git a/java/jau/direct_bt/DBTAdapter.java b/java/jau/direct_bt/DBTAdapter.java
index 56139e14..f9d7183f 100644
--- a/java/jau/direct_bt/DBTAdapter.java
+++ b/java/jau/direct_bt/DBTAdapter.java
@@ -290,6 +290,9 @@ public class DBTAdapter extends DBTObject implements BTAdapter
     private native byte initializeImpl(final byte btModeInt);
 
     @Override
+    public final native boolean isInitialized();
+
+    @Override
     public final HCIStatusCode reset() {
         return HCIStatusCode.get( resetImpl() );
     }
diff --git a/java/jni/direct_bt/DBTAdapter.cxx b/java/jni/direct_bt/DBTAdapter.cxx
index b5bd1083..259686c3 100644
--- a/java/jni/direct_bt/DBTAdapter.cxx
+++ b/java/jni/direct_bt/DBTAdapter.cxx
@@ -890,6 +890,17 @@ jbyte Java_jau_direct_1bt_DBTAdapter_initializeImpl(JNIEnv *env, jobject obj, jb
     return (jbyte) number(HCIStatusCode::INTERNAL_FAILURE);
 }
 
+jboolean Java_jau_direct_1bt_DBTAdapter_isInitialized(JNIEnv *env, jobject obj) {
+    try {
+        BTAdapter *adapter = jau::getJavaUplinkObject<BTAdapter>(env, obj);
+        jau::JavaGlobalObj::check(adapter->getJavaObject(), E_FILE_LINE);
+        return adapter->isInitialized();
+    } catch(...) {
+        rethrow_and_raise_java_exception(env);
+    }
+    return JNI_FALSE;
+}
+
 jbyte Java_jau_direct_1bt_DBTAdapter_resetImpl(JNIEnv *env, jobject obj) {
     try {
         BTAdapter *adapter = jau::getJavaUplinkObject<BTAdapter>(env, obj);
diff --git a/java/org/direct_bt/BTAdapter.java b/java/org/direct_bt/BTAdapter.java
index eff93a62..bc54586d 100644
--- a/java/org/direct_bt/BTAdapter.java
+++ b/java/org/direct_bt/BTAdapter.java
@@ -490,6 +490,13 @@ public interface BTAdapter extends BTObject
     public HCIStatusCode initialize(final BTMode btMode);
 
     /**
+     * Returns true, if this adapter has already been {@link #initialize(BTMode)} 'ed. Otherwise false.
+     *
+     * This helps avoiding re-initializing, if not so desired.
+     */
+    boolean isInitialized();
+
+    /**
      * Reset the adapter.
      * <p>
      * The semantics are specific to the HCI host implementation,