class SpaceAge { SpaceAge(double seconds) { throw new UnsupportedOperationException("Delete this statement and write your own implementation."); } double getSeconds() { throw new UnsupportedOperationException("Delete this statement and write your own implementation."); } double onEarth() { throw new UnsupportedOperationException("Delete this statement and write your own implementation."); } double onMercury() { throw new UnsupportedOperationException("Delete this statement and write your own implementation."); } double onVenus() { throw new UnsupportedOperationException("Delete this statement and write your own implementation."); } double onMars() { throw new UnsupportedOperationException("Delete this statement and write your own implementation."); } double onJupiter() { throw new UnsupportedOperationException("Delete this statement and write your own implementation."); } double onSaturn() { throw new UnsupportedOperationException("Delete this statement and write your own implementation."); } double onUranus() { throw new UnsupportedOperationException("Delete this statement and write your own implementation."); } double onNeptune() { throw new UnsupportedOperationException("Delete this statement and write your own implementation."); } }