public static SplicingIdGenerator instance() { if (instance == null) { synchronized (SplicingIdGenerator.class) { if (instance == null) { instance = new SplicingIdGenerator(); } } } return instance; }
public static SplicingIdGenerator instance() { if (instance == null) { synchronized (SplicingIdGenerator.class) { if (instance == null) { instance = new SplicingIdGenerator(); } } } return instance; }