title: NullPointerException when trying to play sound
body: <p>I'm having a simple program that plays a sound when running it.</p>
  <p>code:</p>
  <pre><code>public static void main(String[] args) {
       try {
              AudioInputStream audioInputStream = AudioSystem.getAudioInputStream(Main.class.getResource(&quot;ProgramAudio\\chechen.wav&quot;));
              Clip clip = AudioSystem.getClip();
              clip.open(audioInputStream);
              clip.start();
              
          } catch (Exception ex) {
              ex.printStackTrace();
          }
  }
  </code></pre>
  <p>Error:</p>
  <pre><code>java.lang.NullPointerException
  at java.base/java.util.Objects.requireNonNull(Objects.java:222)
  at java.desktop/javax.sound.sampled.AudioSystem.getAudioInputStream(AudioSystem.java:1032)
  at aChatProgramAudio.audio2.main(audio2.java:13)
  </code></pre>
  <p>Maybe the given directory has something to do with it but it does exists.</p>