DefaultMixers.java 文件源码

private static boolean testMixers(Mixer.Info[] infos,
                                  String providerClassName) {
    boolean allOk = true;

    for (int i = 0; i < infos.length; i++) {
        Mixer mixer = null;
        try {
            mixer = AudioSystem.getMixer(infos[i]);
        } catch (NullPointerException e) {
            out("Exception thrown; Test NOT failed.");
            e.printStackTrace();
        }
        for (int j = 0; j < lineClasses.length; j++) {
            if (mixer.isLineSupported(new Line.Info(lineClasses[j]))) {
                allOk &= testMixer(mixer, lineClasses[j],
                                   providerClassName);
            }
        }
    }
    return allOk;
}