2323
2424package com .iluwatar .event .queue ;
2525
26+ import org .slf4j .Logger ;
27+ import org .slf4j .LoggerFactory ;
28+
2629import java .io .File ;
2730import java .io .IOException ;
2831
3841 *
3942 */
4043public class Audio {
44+ private static final Logger LOGGER =LoggerFactory .getLogger (Audio .class );
45+ private static final Audio INSTANCE =new Audio ();
4146
4247private static final int MAX_PENDING =16 ;
4348
@@ -55,7 +60,7 @@ public class Audio {
5560 }
5661
5762public static Audio getInstance () {
58- return SingletonHolder . getAudioInstance () ;
63+ return INSTANCE ;
5964 }
6065
6166/**
@@ -141,14 +146,11 @@ private void update() {
141146clip .open (audioStream );
142147clip .start ();
143148 }catch (LineUnavailableException e ) {
144- System .err .println ("Error occoured while loading the audio: The line is unavailable" );
145- e .printStackTrace ();
149+ LOGGER .trace ("Error occoured while loading the audio: The line is unavailable" ,e );
146150 }catch (IOException e ) {
147- System .err .println ("Input/Output error while loading the audio" );
148- e .printStackTrace ();
151+ LOGGER .trace ("Input/Output error while loading the audio" ,e );
149152 }catch (IllegalArgumentException e ) {
150- System .err .println ("The system doesn't support the sound: " +e .getMessage ());
151- e .printStackTrace ();
153+ LOGGER .trace ("The system doesn't support the sound: " +e .getMessage (),e );
152154 }
153155 }
154156
@@ -172,11 +174,4 @@ public PlayMessage[] getPendingAudio() {
172174return pendingAudio ;
173175 }
174176
175- private static class SingletonHolder {
176- private static final Audio INSTANCE =new Audio ();
177-
178- static Audio getAudioInstance () {
179- return INSTANCE ;
180- }
181- }
182177}