以下的例子中包含所有你所需要的： 两个简单MIDIet程序的源代码，一个存储在JAR文件中的表单文件（MANIFEST），一个JAVA文件描述符文件（.jad），MIDIet的图象文件（.png），还有一个用于运行MIDIet程序和编译，预检，创建JAR文件的DOS批处理文件。
源代码1：
| /*---------------------------------------------------- * www.CoreJ2ME.com * * Simple MIDlet1 *---------------------------------------------------*/ import javax.microedition.midlet.*; import javax.microedition.lcdui.*; public class MIDlet1 extends MIDlet implements CommandListener { private Display display; // Reference to Display object private TextBox tbxMain; // A Textbox to display a message private Command cmdExit; // A Command to exit the MIDlet // The constructor public MIDlet1() { display = Display.getDisplay(this); cmdExit = new Command("Exit", Command.SCREEN, 1); tbxMain = new TextBox("Welcome", "Core J2ME", 50, 0); tbxMain.addCommand(cmdExit); tbxMain.setCommandListener(this); } // Called by application manager to start the MIDlet. public void startApp() { display.setCurrent(tbxMain); } // A required method public void pauseApp() { } // A required method public void destroyApp(boolean unconditional) { } // Check to see if our Exit command was selected public void commandAction(Command c, Displayable s) { if (c == cmdExit) { destroyApp(false); notifyDestroyed(); } } } |
源代码2：
| /*---------------------------------------------------- * www.CoreJ2ME.com * * Simple MIDlet2 *---------------------------------------------------*/ import javax.microedition.midlet.*; import javax.microedition.lcdui.*; public class MIDlet2 extends MIDlet implements CommandListener { private Display display; // Reference to Display object private Form frmMain; // The main form private TextField txfName; // A text field to prompt for name private Command cmdExit; // A Command to exit the MIDlet // The constructor public MIDlet2() { display = Display.getDisplay(this); cmdExit = new Command("Exit", Command.SCREEN, 1); txfName = new TextField("Name:", "", 10, TextField.ANY); frmMain = new Form("Sample Form"); frmMain.addCommand(cmdExit); frmMain.append(txfName); frmMain.setCommandListener(this); } // Called by application manager to start the MIDlet. public void startApp() { display.setCurrent(frmMain); } // A required method public void pauseApp() { } // A required method public void destroyApp(boolean unconditional) { } // Check to see if our Exit command was selected public void commandAction(Command c, Displayable s) { if (c == cmdExit) { destroyApp(false); notifyDestroyed(); } } } |
mainfest.mf 文件（要存到JAR文件里）：
| MIDlet-Name: TwoMIDlets MIDlet-Version: 1.0 MIDlet-Vendor: Core J2ME Technology MIDlet-1: MIDlet1,/image1.png, MIDlet1 MIDlet-2: MIDlet2,/image2.png, MIDlet2 MicroEdition-Configuration: CLDC-1.0 MicroEdition-Profile&: MIDP-1.0 |
MIDlet.jad 文件
| MIDlet-Name: TwoMIDlets MIDlet-Version: 1.0 MIDlet-Vendor: Core J2ME Technology MIDlet-Description: Packaging multiple MIDlets MIDlet-Jar-URL: MIDlet.jar MIDlet-Jar-Size: 3144 MIDlet-1: MIDlet1,/image1.png, MIDlet1 MIDlet-2: MIDlet2,/image2.png, MIDlet2 |
Emulator的显示结果：
