Java技术代码的相关内容

文章 2017-11-23 来自：开发者社区

JAVA技术：代码实现验证码图片的生成

Servlet生成验证码图片 1 package com.logcd.servlet; 2 3 import java.awt.Color; 4 import java.awt.Font; 5 import java.a...

文章 2017-05-02 来自：开发者社区

Java核心技术卷I基础知识3.6.6　码点与代码单元

3.6.6　码点与代码单元 Java字符串由char值序列组成。从3.3.3节“char类型”已经看到，char数据类型是一个采用UTF-16编码表示Unicode码点的代码单元。大多数的常用Unicode字符使用一个代码单元就可以表示，而辅助字符需要一对代码单元表示。 length方法将返回采用UTF-16编码表示的给定字符串所需要的代码单元数量。例如：要想得到实际的长度，即码点...

文章 2016-05-16 来自：开发者社区

JAVA：将反射技术应用于工厂模式(Factory)和单例模式(Singleton)的简单代码

反射技术大量用于Java设计模式和框架技术，最常见的设计模式就是工厂模式(Factory)和单例模式(Singleton)。参考URL： http://blog.csdn.net/xiaohai798/article/details/11640427 用接口来沟通不同程序的开发进度，不必等上游程序写好代码之后，再注入后面流程的程序员。且在实现上，可以用配置文件灵活变更，而不用重编译整个项目。 ....

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