Eclipse 搭建 J2ME 開發環境完整教學：EclipseME + WTK 2.2 圖文步驟

所需軟體下載

• Eclipse 3.1：eclipse.org
• Sun Java WTK 2.2：java.sun.com
• EclipseME 1.2.3：eclipseme.org

安裝路徑規劃

• Eclipse：D:\eclipse3.1
• WTK 2.2：D:\wtk2.2（需打補丁）
• EclipseME：D:\eclipseme1.2.3

EclipseME 整合步驟

1. 啟動 Eclipse → Help → Software Updates → Find and Install
2. 選 Search for new features to install → Next
3. 點 New Archived Site → 選 eclipseme1.2.3.zip → Finish
4. 重新啟動 Eclipse

WTK 整合配置

1. Window → Preferences → J2ME → Platform Component
2. 選 Wireless Toolkits → 右鍵 Add Wireless Toolkit
3. 選 WTK 2.2 安裝目錄 (D:\wtk2.2) → Finish

建立測試專案驗證

1. File → New → Project → J2ME → J2ME Midlet Suite
2. 專案名：testJ2ME
3. 新建 HelloWorldMIDlet 類別：

package com.agile.j2me.core;

import javax.microedition.midlet.MIDlet;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.TextBox;

public class HelloWorldMIDlet extends MIDlet {
    private TextBox tBox;
    
    public HelloWorldMIDlet() {
        tBox = new TextBox("測試程式", "hellWorld", 20, 0);
    }
    
    protected void startApp() {
        Display.getDisplay(this).setCurrent(tBox);
    }
    protected void pauseApp() {}
    protected void destroyApp(boolean unconditional) {}
}

4. 右鍵專案 → Run As → Emulated J2ME Midlet
5. 模擬器顯示 "hellWorld" 即配置成功

常見問題排查

• WTK 路徑含中文/空格 → 移至純英文路徑
• EclipseME 版本與 Eclipse 不匹配 → 確認版本對應關係
• 模擬器無法啟動 → 檢查 WTK bin 目錄下 emulator.exe 是否可執行