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J2ME开发步骤-汉土网络
摘要: J2ME开发步骤-汉土网络
J2ME开发步骤
</td> </tr> <tr> <td colspan="3" align="center"></td> </tr> <tr> <td colspan="3" class="text">在使用Motorola SDK之前必须安装JDK，Standard Edition。请从 http://java.sun.com/products/jdk 下载JDK，并按照Sun的指导安装到PC中。
3. 安装Motorola SDK 注意：安装程序需要口令，请向Motorola公司索取。
4. 编写第一个程序 tutorials"中，用编辑器创建文件"HelloWorld.java"。
<table cellSpacing=0 cellPadding=4> <tr> <td>/*
* HelloWorld.java
*
* June 27, 2000
*
* ? Copyright 2000 Motorola, Inc. All Rights Reserved.
* This notice does not imply publication.
*/
package com.mot.j2me.midlets.tutorials;
import javax.microedition.lcdui.*;
import javax.microedition.midlet.*;
/**
* A simple Hello World midlet
*
* @see MIDlet
*/
public class HelloWorld extends MIDlet {
/**
* Main application screen
*/
private Form mainScreen;
/**
* A reference to the Display
*/
private Display myDisplay;
/**
* Creates a screen for our midlet
*/
HelloWorld() {
myDisplay = Display.getDisplay(this);
mainScreen = new Form("Hello World");
/*
* Create a string item
*/
StringItem strItem = new StringItem("Hello", "This is a J2ME MIDlet.");
mainScreen.append(strItem);
}
/**
* Start the MIDlet
*/
public void startApp() throws MIDletStateChangeException {
myDisplay.setCurrent(mainScreen);
}
/**
* Pause the MIDlet
*/
public void pauseApp() {
}
/**
* Called by the framework before the application is unloaded
*/
public void destroyApp(boolean unconditional) {
}
} </td></tr></table>
5. 编译
编译"HelloWord"
1. 在命令行窗口中，进入目录"
2. 输入"compileAll commotj2memidletsutorialsHelloWorld.java"
6. 运行
运行"HelloWord"
2. 输入"runEmul com.mot.j2me.midlets.tutorials.HelloWorld" </td> </tr> <tr>
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