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Returns whether this {@code Enumeration} has more elements.

分支限界算法求最大团问题，java源码，分支限界法的一个经典问题解决。(A branch and limit method for solving the problem of the maximum mass)

自己动手写网络爬虫第一章，学会如何自己编写爬虫程序，java程序开发(Write himself reptiles first chapter, learn how to write their own crawlers, java application development)

这是一个简单的java桌面应用软件。主要应用于酒店点餐和管理操作。能帮助到java的初学者(This is a simple java desktop application software. Mainly used in hotels ordering and management operations. Can help to java beginners)

说明：  简单实现抽签功能。通过两个数组的定义及借助random方法实现(Draw a simple function to achieve. Through the definition and use of two arrays of random method)

SelectorProvider is an abstract base class that declares methods for providing instances of DatagramChannel, Pipe, java.nio.channels.Selector , ServerSocketChannel, and SocketChannel.

3.设计一个幻灯片播放窗口，在窗口中点击鼠标时，在红、绿、蓝三种颜色的面板之间切换。程序文件命名为Exe8_3.java。(3. Design a slideshow window, click the mouse, in between red, green, and blue switch panel in the window. Program file named Exe8_3.java.)

spring demo as spring boot

正则匹配工具，可匹配任意字符，支持匹配替换，支持对各种标示符的特别处理，界面化操作，简单易用(Regular matching tool to match any character, support matching replacement support special treatment for a variety of identifiers, interface operation, easy to use)

程序随机产生20—50根火柴，由人与计算机轮流拿，每次拿的数量不超过3根，拿到最后一根为胜。(20-50 program randomly generates a match, the person with the computer take turns, each time the number does not take more than three, to get the last one wins.)