Java单例模式及其多线程下的实现，包括六种线程安全实现和一种非线程安全实现(经典懒汉式)。

This is an example of a DMC implementation. In this project we use the singleton design pattern and use a basic thread-locking protection (double checked locking).

A generalized lightweight set of lambda interfaces and some implementations that adds the necessary functionality that is not available in the standard sdk.