UML发展了很多年了，为什么用的人还是这么少？

对你这种论调........

再和你争就是我傻了.....

你应该知道你是不是小孩子了。
我不支持使用UML已经说明原因了。
你不明白我说什么，还老是叫呼。
有意思吗？

直接说对方不懂这种回答太没意思, 而且这种回答永远无敌 ^_^

我是很希望有人能对lz "从软件开发的实际来看，用了UML并没有挺高软件开发的速度，也没有提高软件开发的可理解性，更没有提高软件的质量。" 这种论调用具体例子作出正面反驳,而不是空口讲道理

1.在用算法描述一个复杂的业务逻辑时，如果不用UML来描述帮助理清思路我想不到用其他东西。
2.这种辅助的UML图同时也能保证代码质量。
^-^
我发现很多概念都是理解层次的问题。

这里提供一个支持UML的例子。。
“糊涂虫3000” 可以去下面这个链接看看。。里面几乎所有的项目都有提供use case diagrams, class diagrams, sequence diagrams/activity diagrams..
"http://software.topcoder.com/catalog/c_showroom.jsp"..
看看人家是怎么开发的..

这个UML的好处不是一两句话能说清楚的。 拿个最简单的来说吧。 设计系统的时候用到的那些设计模式，你是直接看code容易理解呢，还是看class diagram好理解？

看它的图，你觉得你能更好的理解吗？
特别是类图。这么多接口一看就很乱。
这个还只是包含了4个变量，少量接口的类。
如果多了呢？还能看吗？
下面是其中的一个图：

乱吗？乱在何处？
为什么不能更好的理解。 类图加上sequence diagram, 我们就可以知道类之间的相互炒作的流程。。总比你看代码从一个类跳到另一个类简单吧。

请问我要记住所有的类图吗？
你这个是最简单的图了，看起来都费劲了。
那复杂点的图怎么描述？
如果方法有1000个，你还能用UML来描述吗？
请问要多大面积的纸？

“请问要多大面积的纸？"
亏你还是编程的。 你不会用电脑来看啊。 你知道这个世界上有电脑软件的东西吗?
我下面给出一些商业的UML 工具. 有大有小的。
如果说UML没有用的话，那下面这些软件工具，又是被人开发出来，然后拿来卖钱是干什么用的！！你也自己可以去google或者wiki一下。

当然如果你觉得，没用的必要，那我也没话说了。。



List of Commercial/Proprietary UML tools

Potential users can freely download versions of most of the following tools; such versions usually impose limits in capability and/or by a time-period.
AgileJ StructureViews: custom reverse-engineered class-diagrams — Java/Eclipse/XP. (Formerly marketed as "Modelistic".)
Altova UModel: GUI UML editor, supports UML 2.2, code engineering in Java, C#, and Visual Basic, imports and exports XMI
Apollo for Eclipse:supports UML 2.0 and Java 5. Integrates with the Eclipse IDE
Artisan Studio: multi-user, multi-site modelling; supports UML 2.1 and OMG SysML 1.1; code synchronization for C, C++, C#, Java, Ada, SPARK Ada; supports MDA and simulation of dynamic behavior
Avolution: ABACUS 3.x is a general modeling tool that supports UML amongst many other open standards and notations.
BLU AGE: an MDA compliant software workbench that enables 100% automated transformation of your UML 2.X diagrams into Java EE and .Net Enterprise business applications.
Blueprint Software Modeler: An integrated software-modeling environment with UML 2.1 modeling, OCL 2.0, meta-modeling and profiles; based on Eclipse
Borland Together: UML modelling tool, integrated with Eclipse and with MS VS.NET 2005. Supports UML 2.0 and MDA, OCL, MOF.
Cadifra UML Editor: UML diagram editor for Windows
CaseComplete: Use Case and Requirements management tool including Use Case diagrams
ConceptDraw 7: diagramming tool for Windows and Mac, supports UML 2.0
Creately - Online Diagramming: a web-based collaboratively UML tool for Windows, Linux and Mac that sports a WYSIWYG interface
Enterprise Architect – UML 2.1 tool with forward- and reverse-engineering and integration with Visual Studio 2005 and Eclipse. Extensible through addins and modeling technologies.
eRequirements: free web-based requirements-management tool
Fooboard - free web based UML diagramming and collaboration tool
GatherSpace: Online/On-Demand Use Case and Requirements Management
Gliffy: Desktop application feel in a web-based UML diagramming solution
idungu: web-based UML diagramming solution
Imagix 4D - C, C++ and Java reverse engineering / program comprehension tool generating UML Class Diagrams.
JUDE: object-oriented analysis and design with UML and Mindmap. JUDE/Community, though free to use, does not provide open source.
Konesa: Canyon Blue's collaborative modelling tool
MacA&D: UML and requirements-management for Mac OS X
MagicDraw UML: UML 2.0 tool with forward- and reverse-engineering and support for many plugin products for MDA. Integrates with many IDEs, including Eclipse and NetBeans. Supports SysML.
MasterCraft (software): a suite of tools from Tata Consultancy Services Limited which support object-oriented analysis and design using UML for development of MDA-based application-software. The tool-suite consists of IDE-based modelers which allow for UML-based modeling.
Metamill: a round-trip UML tool for C++, C# and Java. Runs under Windows and Linux.
MicroGOLD WithClass: UML modeling tool that can generate code and reverse engineer C++, Java, Delphi, VB, IDL, Perl, PHP, C#, and VB.net. Works with EJB.
Microsoft Visio:– a diagramming tool that also supports UML (Stencil and Template for UML 2.2)
MyEclipse: An Eclipse-based IDE. Professional Edition includes UML solutions.
North State Software: NSF is a highly extensible, software development framework for implementing UML 2.0 State Machines, including run-time engine with threading, timer, and trace utilities.
Objecteering: provides complete coverage of model-driven development (UML 2.0, MDA). A free (as in beer) edition is available.
OmniGraffle: for Mac OS X.
OptimalJ: a model-driven development environment for Java.
Pacestar UML Diagrammer: supports UML 2.0
Poseidon for UML: commercial version of ArgoUML - supports UML 2.0
PowerDesigner: by Sybase; supports UML 2.0, data-modeling, business-process modeling - round trip engineering
Rational Rose: by Rational Software (sold to IBM in 2003); supports UML 1.x.
Rational Rose XDE: an "eXtended Development Environment" in the tradition of Rational Rose; supports UML 1.x
Rational Software Architect: Eclipse-based UML 2.0 tool by the Rational Division of IBM
SDMetrics: a UML-design quality-measurement and design-rule-checking tool
Select Architect: a BPM/UML/MDA platform for Microsoft Windows, running on a scalable repository it integrates with Eclipse and VS.NET
sinelaboreRT - generates human readable c-code from state-charts especially targeting embedded systems
SmartDraw: UML-diagram tool for Microsoft Windows
System Architect: supports UML integrated with other notations and methods in an Enterprise Architecture environment.
Telelogic Rhapsody: supports UML 2.0 and SysML for embedded and real-time systems markets
Telelogic TAU: supports UML 2.0 and SysML
TopCoder UML Tool tool designed and developed entirely by the TopCoder Community to model sequence, class, use case, and activity diagrams. Free and open-source but with a specific license agreement.
Trace Modeler: an easy-to-use and smart editor for UML sequence diagrams. It's lightweight, portable and ensures diagrams are always visually pleasing and structurally correct.
Use Case Studio: a use-case authoring tool by Rewritten Software. Free for educational use.
Visustin: reverse-engineers UML activity-diagrams and flow-charts
Visual Paradigm for UML: supports UML 2.1, data modeling, business modeling and reverse engineering of source code and databases
Visible Analyst for UML: supports UML 2.1, enterprise architecture, strategic planning, structured analysis and design, data modeling, real-time modeling business modeling and forward and reverse engineering of source code and databases; common repository and multi-user by design, www.visible.com
WinA&D: UML and requirements management for Microsoft Windows
yalips: modeling tool that also supports brainstorming and gantt project management
Visual Use Case: Use Case and Diagramming tool
Model Realization: A Java code generation tool. It supports UML 2.0 and Java 5
Zeligsoft CX: An adaptive, non-prescriptive toolkit utilizing domain-specific modeling and code generation. An Eclipse plugin.

就像网瘾标准一样的东西

很多人在代码中滥用接口就是UML惹的祸。这玩意应该标明，不适合初学者