考虑线程安全的情况下最完美的单例实现

[Java] 纯文本查看 复制代码

public class SingletonInitiOnDemand {

private SingletonInitiOnDemand() {
};

private static class SingletonHolder {
private static final SingletonInitiOnDemand INSTANCE = new SingletonInitiOnDemand();
}

public static SingletonInitiOnDemand getInstance() {
return SingletonHolder.INSTANCE;
}
}