我了解核心 Java 和 Android 的知识。现在我想学习J2ME。
开始J2ME需要哪些工具？
我读了一些入门教程，例如 http://www.roseindia.net /j2me/java-platform-micro-edition.shtml 在本教程中，我读到我需要下载
sun_java_wireless_toolkit-2_5_1-windows (WTK) 以及 java.
但是在 Oracle 网站中，当我检查 j2me 部分时，他们说下载 sun_java_me_sdk-3_0-win 并启动。这是启动J2me 的第一点。以及这两者有什么区别。任何好的网站链接都会非常有帮助。
提前致谢
I have knowledge of core Java and Android. now I wish to learn J2ME.
What are the tools are needed for start with J2ME.
and I read some tutorial for starting like http://www.roseindia.net/j2me/java-platform-micro-edition.shtml In this tutorial I read that I need to download
sun_java_wireless_toolkit-2_5_1-windows (WTK) along with java.
But in Oracle site when I check for j2me section they are saying to download sun_java_me_sdk-3_0-win and start . so which is first point to start J2me. and what the diffrence in both of these two .Any good site link to refer will be very helpful.
Thanks in Advance
发布评论
评论（3）
如果您需要针对实际设备进行开发，则需要下载 2.5 版本的 WTK，因为只有少数 J2ME 设备支持 J2M2 3.0（如果有）。您可以在此处下载 WTK 2.5：http://www.oracle.com/technetwork/java/javasebusiness/downloads/java-archive-downloads-javame-419430.html#sun_java_wireless_toolkit-2.5.2_01b-oth-JPR
2.5与 3.0 的显着不同再次：使用 3.0 进行开发对于现有设备没有用处。
以下是 2.5 的功能概述：
http://www.oracle.com/ technetwork/java/download-135801.html
据我所知，您发布的教程是一个很好的起点。
If you need to develop for real-world devices you will need to download the 2.5 version of the WTK, as there are only a few J2ME devices which support J2M2 3.0 (if any). You can download WTK 2.5 here: http://www.oracle.com/technetwork/java/javasebusiness/downloads/java-archive-downloads-javame-419430.html#sun_java_wireless_toolkit-2.5.2_01b-oth-JPR
2.5 differs significantly from 3.0 and again: developing with 3.0 is of no use for existing devices.
Here's an overview of the feature of 2.5:
http://www.oracle.com/technetwork/java/download-135801.html
As fas as I can see, the tutorial you posted is a good starting point.
我想建议您阅读j2me完整参考..因为您已经了解了core java，所以学习J2ME非常容易...，J2ME SDK3与J2ME WTK 2.5.2略有不同，
检查以下网址以了解更多信息或从 Java Microedition 开始：
http://www.daniweb.com/software-development/mobile -开发/线程/302854/646446#post646446
I would like to suggest you to read j2me complete reference ..as you know core java already it is very easy to learn J2ME...,J2ME SDK3 is just little different from J2ME WTK 2.5.2 ,
check the following url for learn more or start with Java Microedition :
http://www.daniweb.com/software-development/mobile-development/threads/302854/646446#post646446
要开始开发，您需要一个 IDE，它是一种软件应用程序，为计算机程序员进行软件开发提供全面的设施。我建议您使用 Netbeans，您可以从此处下载：NetBeans IDE 下载捆绑包 并选择支持 Java ME 的捆绑包（因此您不再需要下载 Java ME SDK，您将随 Netbeans 一起获取它）。
接下来您需要按照教程中的内容安装无线工具包。您可以从以下位置获取：Sun Java Wireless Toolkit 2.5.2_01 for CLDC
该工具包包括开发人员带来高效和成功的无线应用程序所需的仿真环境、性能优化和调整功能、文档和示例。
现在您已准备好开始。
以下是一些可以帮助您开始使用的链接：
无线开发教程第一部分
J2ME 教程，第 1 部分：创建MIDlet
摩托罗拉 A780 手机 J2ME 入门指南
部署无线 Java 应用程序
To start developing you need a IDE ,is a software application that provides comprehensive facilities to computer programmers for software development. I suggest you Netbeans, which you can download from here : NetBeans IDE Download Bundles and select a bundle which support Java ME(So you no longer need to download Java ME SDK,you'll get it along with Netbeans).
The next thing you need is to install the wireless toolkit as you read in the tutorial. Which you can get from :Sun Java Wireless Toolkit 2.5.2_01 for CLDC
The toolkit includes the emulation environments, performance optimization and tuning features, documentation, and examples that developers need to bring efficient and successful wireless applications.
Now you are ready to start .
Here are some links that can help you to start with :
Wireless Development Tutorial Part I
J2ME Tutorial, Part 1: Creating MIDlets
Guide to getting started in J2ME for the Motorola A780 phone
Deploying Wireless Java Applications