package device.usbPlayer; import device.Device; public class UsbPlayer implements Device { private int Lautstaerke = 0; public void setLautstaerke(int ls) { if (ls <= 100) { Lautstaerke = ls; } } public int getLautstaerke() { return Lautstaerke; } @Override public void louder() { if(Lautstaerke < 100) { Lautstaerke += 1; } else { Lautstaerke = 100; } } @Override public void quieter() { if(Lautstaerke > 0) { Lautstaerke -= 1; } else { Lautstaerke = 0; } } @Override public int getVolume() { return 0; } @Override public void next() { } @Override public void prev() { } @Override public String getInfoText() { return null; } @Override public String[] getOptions() { return new String[0]; } @Override public String[] getItemList() { return new String[0]; } @Override public String play() { return null; } }