android/sample: simplify as lint suggested

android/ijkplayer/ijkplayer-java/src/main/java/tv/danmaku/ijk/media/player/IjkLibLoader.java

@@ -17,6 +17,6 @@
 package tv.danmaku.ijk.media.player;
 
 public interface IjkLibLoader {
-    public void loadLibrary(String libName) throws UnsatisfiedLinkError,
+    void loadLibrary(String libName) throws UnsatisfiedLinkError,
             SecurityException;
 }

android/ijkplayer/ijkplayer-java/src/main/java/tv/danmaku/ijk/media/player/IjkMediaPlayer.java

@@ -899,7 +899,6 @@ public final class IjkMediaPlayer extends AbstractMediaPlayer {
 
             default:
                 DebugLog.e(TAG, "Unknown message type " + msg.what);
-                return;
             }
         }
     }
@@ -943,8 +942,8 @@ public final class IjkMediaPlayer extends AbstractMediaPlayer {
         mOnControlMessageListener = listener;
     }
 
-    public static interface OnControlMessageListener {
-        public String onControlResolveSegmentUrl(int segment);
+    public interface OnControlMessageListener {
+        String onControlResolveSegmentUrl(int segment);
     }
 
     /*
@@ -1016,8 +1015,8 @@ public final class IjkMediaPlayer extends AbstractMediaPlayer {
      * MediaCodec select
      */
 
-    public static interface OnMediaCodecSelectListener {
-        public String onMediaCodecSelect(IMediaPlayer mp, String mimeType, int profile, int level);
+    public interface OnMediaCodecSelectListener {
+        String onMediaCodecSelect(IMediaPlayer mp, String mimeType, int profile, int level);
     }
     private OnMediaCodecSelectListener mOnMediaCodecSelectListener;
     public void setOnMediaCodecSelectListener(OnMediaCodecSelectListener listener) {

android/ijkplayer/ijkplayer-java/src/main/java/tv/danmaku/ijk/media/player/annotations/CalledByNative.java

@@ -31,5 +31,5 @@ public @interface CalledByNative {
     /*
      * If present, tells which inner class the method belongs to.
      */
-    public String value() default "";
+    String value() default "";
 }
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