A partial fix to issue 24.

- Rename AudioEngine.java, AudioEngine3D.java and AudioEngine3DL2.java to abstract class.


git-svn-id: https://svn.java.net/svn/j3d-core-utils~svn/trunk@25 9497e636-51bd-65ba-982d-a4982e1767a5

1 files changed, 3 insertions, 9 deletions

diff --git a/src/classes/share/com/sun/j3d/audioengines/AudioEngine.java b/src/classes/share/com/sun/j3d/audioengines/AudioEngine.java
index 8d4d36f..c61115d 100644
--- a/src/classes/share/com/sun/j3d/audioengines/AudioEngine.java
+++ b/src/classes/share/com/sun/j3d/audioengines/AudioEngine.java
@@ -55,7 +55,7 @@ import javax.media.j3d.*;
  * NOTE: AudioEngine developers should not subclass this class directly.
  * Subclass AudioEngine3DL2 instead.
  */
-public class AudioEngine implements AudioDevice {
+public abstract class AudioEngine implements AudioDevice {
 
     /*
      * This device's UNIX file descriptor
@@ -107,19 +107,13 @@ public class AudioEngine implements AudioDevice {
      * Code to initialize the device
      * @return flag: true is initialized sucessfully, false if error
      */
-    public boolean initialize() {
-        // Expected to be over-ridden by extending class
-        return true;
-    }
+    public abstract boolean initialize();
 
     /**
      * Code to close the device
      * @return flag: true is closed sucessfully, false if error
      */
-    public boolean close() {
-        // Expected to be over-ridden by extending class
-        return true;
-    }
+    public abstract boolean close();
 
     /*  
      * Audio Playback Methods