J2ME\u65b9\u9762\u5f00\u53d1\u7684\u8d44\u6599\uff0c\u786e\u5b9e\u662f\u5c11\u4e4b\u53c8\u5c11\uff0c\u4e00\u822c\u7ed9\u65b0\u624b\u63a8\u8350\u7684\u90fd\u662f\u738b\u68ee\u5148\u751f\u7684\u300aPDA\u4e0e\u624b\u673a\u5f00\u53d1\u5165\u95e8\u300b\u4e00\u4e66\uff0c\u7136\u800c\u8be5\u4e66\u5176\u5b9e\u5e76\u4e0d\u9002\u5408\u65b0\u4eba\u9605\u8bfb\uff0c\u8be5\u4e66\u7684\u524d\u51e0\u7ae0\u82b1\u4e86\u5f88\u5927\u7bc7\u5e45\u6765\u8bb2\u89e3\u547d\u4ee4\u884c\u8c03\u8bd5J2ME\u7a0b\u5e8f\u7684\u65b9\u6cd5\u548c\u5f88\u591a\u8981\u70b9\uff0c\u5176\u5b9e\u8fd9\u4e9b\u4e1c\u897f\uff0c\u4f5c\u4e3a\u4e00\u4e2a\u521d\u7ea7\u7684J2ME\u5f00\u53d1\u8005\u6765\u8bf4\uff0c\u5b8c\u5168\u6ca1\u6709\u5fc5\u8981\u5b66\u4e60\u548c\u638c\u63e1\uff0c\u53cd\u800c\u53ea\u4f1a\u7ed9\u81ea\u5df1\u5e73\u6dfb\u5f88\u591a\u8d1f\u62c5\u3002\u73b0\u5728\u505aJ2ME\u5f00\u53d1\uff0c\u5927\u591a\u90fd\u6709\u4e86IDE\uff08\u96c6\u6210\u5f00\u53d1\u73af\u5883\uff09\uff0c\u6bd4\u5982JB\uff0cEclipse\u4ec0\u4e48\u7684\uff0c\u5c31\u7b97\u662f\u7528\u6700\u7b80\u5355\u7684WTK\uff0c\u4e5f\u4e0d\u9700\u8981\u8fdb\u884cpath\u7684\u914d\u7f6e\u7b49\u64cd\u4f5c\uff0c\u6240\u4ee5\u521d\u5b66\u8005\u5b8c\u5168\u53ef\u4ee5\u8df3\u8fc7\u8fd9\u4e9b\u5185\u5bb9\uff0c\u76f4\u63a5\u4e0a\u624b\u3002\u6211\u7684\u8ba4\u4e3a\uff0c\u505a\u7a0b\u5e8f\u5f00\u53d1\uff0c\u91cd\u5728\u5b9e\u8df5\u7ecf\u9a8c\uff0c\u800c\u4e0d\u662f\u7406\u8bba\u7814\u7a76\uff0c\u56e0\u6b64\uff0c\u65b0\u4eba\u5b8c\u5168\u53ef\u4ee5\u76f4\u63a5\u4eceJ2ME\u7684\u7a0b\u5e8f\u6d41\u7a0b\u5165\u624b\uff0c\u76f4\u63a5\u8fdb\u5165\uff0c\u800c\u4e0d\u9700\u8981\u53bb\u4e86\u89e3\u592a\u591a\u57fa\u672c\u6982\u5ff5\uff0c\u6bd4\u5982\u4ec0\u4e48\u662fAPI\uff0c\u4ec0\u4e48\u662fMIDP\uff0c\u4ec0\u4e48\u662fJDK\u7b49\u7b49\u3002\u8fd9\u4e9b\u4e1c\u897f\u6211\u5230\u73b0\u5728\u4e5f\u4e0d\u662f\u5f88\u6e05\u695a\uff0c\u4f46\u5e76\u4e0d\u5f71\u54cd\u6211\u8fdb\u884c\u5f00\u53d1\uff0c\u6211\u662f\u8bb2\u7a76\u5b9e\u7528\u4e3b\u4e49\u7684\uff0c\u56e0\u6b64\uff0c\u672c\u6587\u7684\u57fa\u8c03\u5c31\u5728\u4e8e\u8bb2\u8ff0\u4e00\u4e9b\u5b9e\u7528\u7684\u5f00\u53d1\u65b9\u6cd5\u3002\u53e6\u5916\u9996\u5148\u8981\u58f0\u660e\uff1a\u672c\u6587\u4e2d\u7684\u4e00\u5207\u5f00\u53d1\u8c03\u8bd5\u90fd\u662f\u5728WTK\u73af\u5883\u4e0b\u8fdb\u884c\u7684\uff0c\u8bf7\u8bfb\u8005\u6ce8\u610f\u3002
\u4e00\uff0e\u5b66\u4e60J2ME\u9700\u8981\u7684\u57fa\u7840\u77e5\u8bc6
J2ME\u672c\u8eab\u662fJava\u8bed\u8a00\u7684\u4e00\u90e8\u5206\uff0c\u56e0\u6b64\uff0c\u5bf9Java\u8bed\u8a00\u6709\u4e00\u5b9a\u4e86\u89e3\u662f\u5fc5\u8981\u7684\uff0c\u800cJava\u8bed\u8a00\u672c\u8eab\u662f\u9762\u5411\u5bf9\u8c61\u7f16\u7a0b\u7684\u4e00\u79cd\u8bed\u8a00\uff0c\u56e0\u6b64\uff0c\u5bf9\u7c7b\u4e0e\u5bf9\u8c61\u7684\u6982\u5ff5\u8981\u6709\u5fc5\u8981\u7684\u4e86\u89e3\uff0c\u800c\u8fd9\u4e9b\u5185\u5bb9\u5728\u672c\u6587\u4e2d\u5c31\u4e0d\u8fdb\u884c\u4ecb\u7ecd\u4e86\u3002\u53e6\u5916\uff0c\u672c\u6587\u884c\u6587\u4e2d\u5bf9API\u7684\u4ecb\u7ecd\u5f88\u7b80\u7565\uff0c\u56e0\u6b64\uff0c\u8bfb\u8005\u5e94\u8be5\u81ea\u5df1\u591a\u67e5\u9605API\u4e2d\u7684\u76f8\u5173\u5185\u5bb9\u3002
\u4e8c\uff0eJ2ME\u5f00\u53d1\u73af\u5883\u7b80\u4ecb
J2ME\u7684\u5f00\u53d1\u73af\u5883\u5982\u524d\u6587\u6240\u8ff0\uff0c\u76ee\u524d\u4e3b\u8981\u6709JB\uff0cEclipse\uff0cWTK\u4e09\u79cd\u65b9\u5f0f\uff0c\u5176\u4e2d\u524d\u9762\u4e24\u8005\u90fd\u662f\u96c6\u6210\u5f00\u53d1\u73af\u5883\uff0c\u5728\u7f16\u7a0b\u4e0a\u6bd4\u8f83\u65b9\u4fbf\uff0c\u6709\u667a\u80fd\u8054\u60f3\u7b49\u529f\u80fd\uff0c\u800cWTK\u76f8\u5bf9\u53ea\u63d0\u4f9b\u4e86\u624b\u52a8\u7f16\u8bd1\u548c\u6253\u5305\uff0c\u5e76\u4e14\u6ca1\u6709Debug\u529f\u80fd\u3002\u4f46WTK\u4e0d\u9700\u8981\u591a\u4f59\u7684\u914d\u7f6e\uff0c\u5bf9\u5404\u79cd\u6a21\u62df\u5668\u53ef\u4ee5\u8bf4\u662f\u5373\u63d2\u5373\u7528\uff0c\u800c\u4e14\u5728WTK\u4e0b\u7684\u7a0b\u5e8f\u76ee\u5f55\u7b80\u6d01\u660e\u4e86\uff0c\u65b9\u4fbf\u67e5\u8be2\u3002\u8fd9\u51e0\u79cd\u5f00\u53d1\u73af\u5883\u5404\u6709\u957f\u77ed\u5904\uff0c\u6240\u4ee5\u5927\u5bb6\u53ef\u4ee5\u81ea\u5df1\u9009\u62e9\uff0c\u4e0d\u8fc7\u5bf9\u65b0\u624b\u6765\u8bf4\uff0c\u8fd8\u662f\u5efa\u8bae\u91c7\u7528WTK\uff0c\u56e0\u4e3a\u521a\u63a5\u89e6J2ME\u5f00\u53d1\uff0c\u4e0e\u5176\u628a\u65f6\u95f4\u82b1\u5728\u914d\u7f6e\u4e0a\uff0c\u8fd8\u4e0d\u5982\u82b1\u5728\u7f16\u7a0b\u4e0a\u3002
\u4e09\uff0eJ2ME\u7a0b\u5e8f\u6d41\u7a0b
\u6211\u7684\u611f\u89c9\uff0c\u6bcf\u95e8\u8bed\u8a00\u90fd\u6709\u81ea\u5df1\u7684\u56fa\u5b9a\u683c\u5f0f\uff0c\u5c31\u8ddf\u5199\u6587\u7ae0\u7684\u51e0\u8981\u7d20\u4e00\u6837\uff0c\u603b\u6709\u5f00\u5934\uff0c\u7ed3\u5c3e\u7b49\u7b49\u3002\u800c\u4e86\u89e3\u4e00\u95e8\u8bed\u8a00\u7684\u683c\u5f0f\uff0c\u662f\u5b66\u4e60\u8fd9\u95e8\u8bed\u8a00\u6700\u5148\u8981\u638c\u63e1\u7684\u5185\u5bb9\u3002
\u5982\u679c\u628a\u7a0b\u5e8f\u6d41\u7a0b\u6bd4\u505a\u662f\u4e00\u4e2a\u7ba1\u9053\u5de5\u7a0b\u7684\u8bdd\uff0c\u90a3\u4e48\u6bcf\u95e8\u8bed\u8a00\u91cc\u90fd\u6709\u4e00\u4e2a\u7ba1\u9053\u7684\u5165\u53e3\uff0c\u5728J2ME\u91cc\uff0c\u8fd9\u4e2a\u5165\u53e3\u5c31\u662fMIDlet\u7c7b\uff0c\u8fd9\u4e2a\u7c7b\u4e00\u822c\u4e5f\u79f0\u4e3aJ2ME\u7684\u4e3b\u7c7b\uff0c\u6bcf\u4e2a\u7a0b\u5e8f\uff0c\u90fd\u6709\u4e00\u4e2a\u6216\u591a\u4e2a\u56fa\u5b9a\u7684\u4e3b\u7c7b\uff0c\u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u53ea\u8c08\u4e00\u822c\u7684\u60c5\u51b5\uff0c\u5373\u53ea\u6709\u4e00\u4e2aMIDlet\u4e3b\u7c7b\u7684\u60c5\u51b5\uff0c\u5927\u5bb6\u770bAPI\u5373\u53ef\u77e5\u9053\uff0cMIDlet\u7c7b\u6709\u51e0\u4e2a\u56fa\u5b9a\u65b9\u6cd5\uff0cstartApp(),pauseApp(),destroyApp()\uff0c\u8fd9\u4e9b\u65b9\u6cd5\u5c31\u50cf\u662f\u7ba1\u9053\u5de5\u7a0b\uff08\u4ee5\u4e0b\u7684\u8bb2\u8ff0\u91cc\uff0c\u6211\u90fd\u628a\u7f16\u7a0b\u6bd4\u4f5c\u662f\u7ba1\u9053\u5de5\u7a0b\uff09\u4e2d\u7684\u51e0\u4e2a\u5173\u952e\u9600\u95e8\uff0c\u4e00\u4e2aJ2ME\u7a0b\u5e8f\u542f\u52a8\u540e\uff0c\u4fbf\u5148\u7ecf\u5386MIDlet\u7684\u6784\u9020\u65b9\u6cd5\uff0c\u7136\u540e\u8fdb\u5165startApp()\u65b9\u6cd5\uff0c\u5f53\u6709\u7279\u6b8a\u60c5\u51b5\u6302\u8d77\u7684\u65f6\u5019\uff0c\u4fbf\u4f1a\u8fdb\u5165pauseApp\u65b9\u6cd5\uff0c\u5f53\u7a0b\u5e8f\u7ed3\u675f\u65f6\uff0c\u4fbf\u7ecf\u7531destroyApp\u65b9\u6cd5\u9000\u51fa\u3002\u4e00\u4e2aJ2ME\u7a0b\u5e8f\u53ef\u4ee5\u6ca1\u6709\u5176\u4ed6\u7c7b\uff0c\u4f46\u4e0d\u80fd\u6ca1\u6709MIDlet\u7c7b\uff0c\u53ea\u8981\u6709\u4e00\u4e2a\u5b8c\u6574\u7684\u4e3b\u7c7b\uff0c\u4fbf\u662f\u4e00\u4e2a\u5b8c\u6574\u7684J2ME\u7a0b\u5e8f\u3002\u6bd4\u5982\u975e\u5e38\u7cbe\u5178\u7684"HelloWorld"\uff0c\u4fbf\u53ea\u6709\u4e00\u4e2aMIDlet\u3002<\/p>\n
\u6211\u89c9\u5f97\uff0cJ2ME\u5b9e\u9645\u4e0a\u662f\u4e00\u4e2a\u5f88\u6807\u51c6\u7684\u987a\u5e8f\u6d41\u7a0b\u8bed\u8a00\uff0cJ2ME\u4e2d\u6ca1\u6709\u771f\u6b63\u7684\u591a\u7ebf\u7a0b\uff0c\u5f88\u591a\u60c5\u51b5\u4e0b\uff0c\u4e00\u4e2aJ2ME\u7a0b\u5e8f\u7684\u8fd0\u884c\uff0c\u6211\u4eec\u90fd\u53ef\u4ee5\u5bf9\u4ed6\u7684\u6d41\u7a0b\u8fdb\u884c\u5b8c\u5168\u7684\u8ddf\u8e2a\u3002\u8fd9\u5728\u8c03\u8bd5\u65b9\u9762\u662f\u975e\u5e38\u65b9\u4fbf\u7684\u3002<\/p>\n
\u5728\u8fd9\u91cc\u8fd8\u8981\u89e3\u91ca\u4e00\u70b9\uff0cJ2ME\u7a0b\u5e8f\u4e2d\uff0c\u5c4f\u5e55\u5bf9\u8c61\u662f\u4e00\u4e2a\u6bd4\u8f83\u91cd\u8981\u7684\u5bf9\u8c61\uff0c\u4f60\u7684\u6240\u6709\u64cd\u4f5c\uff0c\u4f60\u6240\u8981\u8868\u8fbe\u7684\u610f\u601d\uff0c\u90fd\u9700\u8981\u5728\u5c4f\u5e55\u4e0a\u63cf\u7ed8\u51fa\u6765\uff0c\u56e0\u6b64\uff0c\u5bf9\u5c4f\u5e55\u7684\u64cd\u4f5c\u4e5f\u662f\u6700\u57fa\u672c\u548c\u6700\u91cd\u8981\u7684\u4e00\u4e2a\u64cd\u4f5c\uff0c\u56e0\u6b64\uff0cJ2ME\u7a0b\u5e8f\u7684\u64cd\u4f5c\u5176\u5b9e\u5c31\u662f\u5bf9Display\u548cDisplay\u4e0a\u7684Displayable\uff08\u5305\u62ecForm\uff0cTextBox\uff0cList\uff0cCanvas\u7b49\u7b49\uff09\u5bf9\u8c61\u8fdb\u884c\u63a7\u5236\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u8ba9\u7a0b\u5e8f\u5728\u5408\u9002\u7684\u65f6\u5019\uff0c\u628a\u9700\u8981\u7684Displayable\u663e\u793a\u5728\u5c4f\u5e55\u4e0a\u3002\u4f7f\u7528\u7684\u65b9\u6cd5\uff0c\u5373\u662fDisplay.setCurrent()\u65b9\u6cd5\u3002<\/p>\n
\u5728\u5c4f\u5e55\u5bf9\u8c61\u7684\u64cd\u4f5c\u4e0a\uff0c\u6211\u8981\u89e3\u91ca\u4e00\u4e0b\uff0cJ2ME\u9ed8\u8ba4\u7684\u5c4f\u5e55\u53ea\u6709\u4e00\u4e2a\uff0c\u5373\u662f\u5f53\u524d\u5c4f\u5e55\uff0c\u6240\u6709\u64cd\u4f5c\u90fd\u662f\u5bf9\u5f53\u524d\u5c4f\u5e55\u8fdb\u884c\u64cd\u4f5c\uff0c\u56e0\u6b64\uff0c\u5f53\u4f60\u5728\u4e3b\u7c7b\u4e2d\u5c06\u4e00\u4e2aCanvas\u5bf9\u8c61\u8bbe\u7f6e\u4e3a\u5f53\u524d\u5c4f\u5e55\u540e\uff0c\u5219\u4e3b\u7c7b\u5df2\u7ecf\u5904\u4e8e\u8131\u5c4f\u72b6\u6001\uff0c\u8131\u5c4f\u72b6\u6001\u4e0b\u7684\u5bf9\u8c61\u65e0\u6cd5\u8fdb\u884c\u76f4\u63a5\u64cd\u4f5c\u3002\u8fd9\u4e00\u70b9\u9700\u8981\u6ce8\u610f\u3002\u6240\u6709\u5916\u754c\u7684\u64cd\u4f5c\u5747\u53ea\u80fd\u4f5c\u7528\u4e8e\u5f53\u524d\u5c4f\u5e55\u4e0a\u663e\u793a\u7684Displayable\u5bf9\u8c61\uff0c\u65e0\u8bba\u662fForm\uff0cList\uff0c\u6216\u8005\u662fCanvas\u3002\u6b64\u65f6\u5bf9\u8131\u5c4f\u7c7b\u7684\u64cd\u4f5c\u53ea\u80fd\u901a\u8fc7\u9759\u6001\u65b9\u6cd5\u6216\u8005\u662f\u8be5\u7c7b\u7684\u4e00\u4e2a\u5b9e\u4f8b\u6765\u8fdb\u884c\u3002<\/p>\n
J2ME\u7684\u6e38\u620f\u4e2d\u6700\u7b80\u5355\u7684\u4e00\u79cd\u6e38\u620f\u6d41\u7a0b\u662f\u8fd9\u6837\uff0c\u5373\u4e00\u4e2a\u4e3b\u7c7b\u548c\u4e00\u4e2aCanvas\u7c7b\uff0c\u4e3b\u7c7b\u5165\u53e3\u5904\u5b9a\u4e49\u4e00\u4e2aCanvas\u5bf9\u8c61\uff0c\u5e76\u4e14\u6b64Canvas\u5bf9\u8c61\u7ee7\u627f\u4e00\u4e2aRunnable\u63a5\u53e3\uff0c\u518d\u5b9a\u4e49\u4e00\u4e2a\u57fa\u4e8e\u6b64\u5bf9\u8c61\u7684\u7ebf\u7a0b\uff0c\u7136\u540e\u5c06\u6b64Canvas\u5bf9\u8c61\u8bbe\u4e3a\u5f53\u524d\u5c4f\u5e55\u5bf9\u8c61\uff0c\u5e76\u542f\u52a8\u7ebf\u7a0b\uff0c\u5373\u7528\u7ebf\u7a0b\u7684start()\u65b9\u6cd5\uff0c\u542f\u52a8\u7ebf\u7a0b\u540e\uff0cCanvas\u91cc\u7684run\u65b9\u6cd5\u4fbf\u5f00\u59cb\u8fd0\u884c\uff0c\u800crun\u65b9\u6cd5\u901a\u5e38\u8981\u7528repaint()\u65b9\u6cd5\u6765\u5237\u5c4f\uff0c\u56e0\u6b64\u6d41\u7a0b\u5c31\u662f\u6309paint()->run->paint()…..\u8fd9\u6837\u7684\u8fc7\u7a0b\u5f80\u590d\uff0c\u5176\u4e2d\u5982\u679c\u8fd8\u6709\u952e\u76d8\u8f93\u5165\uff0c\u5219keyPressed()\u7b49\u65b9\u6cd5\u5c31\u7a7f\u63d2\u5728\u4e2d\u95f4\u3002\u57fa\u672c\u4e0aJ2ME\u7684\u7a0b\u5e8f\u5c31\u662f\u6309\u8fd9\u6837\u7684\u6d41\u7a0b\u6765\u8d70\uff0c\u56e0\u6b64\u5728\u5f00\u53d1\u548c\u8c03\u8bd5\u4e2d\u53ea\u8981\u5bf9\u8fd9\u4e2a\u6d41\u7a0b\u8fdb\u884c\u5fc5\u8981\u7684\u8ddf\u8e2a\u5c31\u53ef\u4ee5\u4e86\u3002
\u56db\uff0eJ2ME\u4e2d\u5e38\u7528\u7684\u7c7b
J2ME\u4e2d\u5e38\u7528\u7684\u7c7b\u6709MIDlet\uff0cForm\uff0cList\uff0cCanvas\uff0cString\uff0cCommand,Graphics\u7b49\u7b49\u3002
\u5176\u4e2dGraphics\u4f5c\u4e3a\u6e38\u620f\u5f00\u53d1\u4e2d\u7684\u6838\u5fc3\u7c7b\uff0c\u81ea\u7136\u9700\u8981\u719f\u7ec3\u7684\u638c\u63e1\u3002
\u5728Graphics\u4e2d\u5982\u4e0b\u7684\u91cd\u8981\u65b9\u6cd5\u9700\u8981\u638c\u63e1\uff1a
setColor(int \u8bbe\u7f6e\u7684\u989c\u8272)
setFont(Font \u8bbe\u7f6e\u7684\u5b57\u4f53)
drawRect(int \u8d77\u70b9\u5750\u6807x,int \u8d77\u70b9\u5750\u6807y,int \u5bbd,int \u9ad8)
fillRect(int \u8d77\u70b9\u5750\u6807x,int \u8d77\u70b9\u5750\u6807y,int \u5bbd,int \u9ad8)
drawImage(Image \u8981\u753b\u7684\u56fe\u5f62\u5bf9\u8c61,int \u8d77\u70b9\u5750\u6807x,int\u8d77\u70b9\u5750\u6807y,int \u57fa\u70b9\u7c7b\u578b)
drawLine(int \u8d77\u70b9\u5750\u6807x,int\u8d77\u70b9\u5750\u6807y,int \u7ec8\u70b9\u5750\u6807x,int \u7ec8\u70b9\u5750\u6807y)
drawString(String \u8981\u5199\u7684\u5b57\u7b26\u4e32, int \u8d77\u70b9\u5750\u6807x,int\u8d77\u70b9\u5750\u6807y,int \u57fa\u70b9\u7c7b\u578b)
\u5728\u8fd9\u91cc\u8981\u8bf4\u660e\u4e00\u4e0b\u4ec0\u4e48\u662f\u57fa\u70b9\u7c7b\u578b\uff0c\u57fa\u70b9\u662f\u6807\u5fd7\u4f60\u8bbe\u7f6e\u7684\u8d77\u70b9\u5750\u6807\u5728\u6574\u4e2a\u8981\u7ed8\u5236\u7684\u5bf9\u8c61\uff08\u4e0d\u8bba\u662f\u56fe\u50cf\u8fd8\u662f\u6587\u5b57\uff09\u4e2d\u7684\u4f4d\u7f6e\uff0c\u5982\u5de6\u4e0a\uff0c\u53f3\u4e0b\uff0c\u6b63\u4e2d\u95f4\u7b49\u7b49\u3002
\u5e38\u7528\u7684\u503c\u67090\u621620\uff1a\u5de6\u4e0a\uff0c17\uff1a\u6b63\u4e2d\u95f4\uff0c24\uff1a\u53f3\u4e0a\uff0c36\uff1a\u5de6\u4e0b\uff0c40\uff1a\u53f3\u4e0b\u3002<\/p>\n
\u9664\u6b64\u4e4b\u5916\uff0c\u8fd8\u6709\u51e0\u4e2a\u91cd\u8981\u65b9\u6cd5
addCommand,removeCommand\uff0c\u8fd9\u4e24\u4e2a\u65b9\u6cd5\u662f\u5bf9Command\u7684\u6dfb\u52a0\u548c\u53d6\u6d88\u7684\u64cd\u4f5c\uff0c\u5f88\u5e38\u7528\u3002
\u800c\u8c08\u5230Command\uff0c\u81ea\u7136\u5c31\u8981\u6d89\u53ca\u5230commandListener\u8fd9\u4e2a\u63a5\u53e3\uff0c\u6309\u94ae\u7684\u76d1\u542c\u9700\u8981\u901a\u8fc7\u8fd9\u4e2a\u63a5\u53e3\u6765\u8fdb\u884c\uff0c\u4e5f\u5c31\u662f\u8981\u91cd\u8f7d\u63a5\u53e3\u4e2d\u7684commandAction()\u65b9\u6cd5\u3002\u4e0d\u8fc7\u5728\u4f7f\u7528\u8fd9\u4e2a\u63a5\u53e3\u7684\u65f6\u5019\uff0c\u4e0d\u8981\u5fd8\u4e86\u5bf9\u5f53\u524d\u7684\u5bf9\u8c61\u8bbe\u7f6esetCommandListener(this)\u3002
\u53e6\u5916\uff0c\u5bf9\u4e8eString\u7c7b\uff0csubstring\u65b9\u6cd5\u5e94\u8be5\u638c\u63e1
\u800c\u5bf9\u4e8eForm\u8fd9\u4e9b\u9ad8\u7ea7\u63a7\u4ef6\uff0c\u53ef\u7528\u65b9\u6cd5\u4e0d\u591a\uff0c\u770b\u770bAPI\u5373\u53ef\u3002
\u4e94\uff0eJ2ME\u4e2d\u7684\u7ebf\u7a0b
J2ME\u4e2d\u7684\u7ebf\u7a0b\u662fThread\u7c7b\uff0c\u800c\u5b9e\u73b0\u7ebf\u7a0b\u6709\u4e24\u79cd\u65b9\u6cd5\uff0c\u4e00\u79cd\u662f\u7ee7\u627fRunnable\u63a5\u53e3\uff0c\u4e00\u79cd\u662fTimer\u548cTimerTask\u3002\u800c\u4e0d\u7ba1\u662f\u54ea\u79cd\u7ebf\u7a0b\uff0c\u5176\u672c\u8d28\u90fd\u662f\u5728\u8fd0\u884c\u5176\u4e2d\u7684run\u65b9\u6cd5\u3002\u5728\u8fd9\u91cc\u8981\u6ce8\u610f\uff0cRunnable\u63a5\u53e3\u7684run\u65b9\u6cd5\u548cTimerTask\u7684run\u65b9\u6cd5\u53c8\u662f\u4e0d\u540c\u7684\uff0c\u56e0\u4e3a\u4ed6\u4eec\u7684\u8fd0\u884c\u673a\u5236\u4e0d\u540c\u3002Runnable\u63a5\u53e3\u662f*\u7ebf\u7a0b\u7684\u4f11\u7720\u6216\u7b49\u5f85\u6765\u5b9e\u73b0\u7ebf\u7a0b\u7684\u5237\u65b0\uff0c\u800cTimerTask\u662f\u6309\u7167\u4e8b\u5148\u7ed9\u5b9a\u7684\u65f6\u95f4\u95f4\u9694\u6765\u81ea\u52a8\u5237\u65b0\u3002\u5bf9Runnable\u63a5\u53e3\uff0c\u4e00\u65e6run\u65b9\u6cd5\u7ed3\u675f\u540e\uff0c\u5219\u7ebf\u7a0b\u5c31\u7ed3\u675f\u4e86\uff0c\u56e0\u6b64Runnable\u7ebf\u7a0b\u91cc\u7684run\u65b9\u6cd5\u8981\u5199\u6210\u5faa\u73af\u65b9\u5f0f\uff0c\u4e00\u822c\u662fwhile(isRunning)\u7684\u5f62\u5f0f\uff0c\u8981\u7ed3\u675f\u7684\u65f6\u5019\u628aisRunning\u8bbe\u4e3afalse\uff0c\u800cTimerTask\u5219\u4e0d\u7528\uff0c\u56e0\u4e3a\u4ed6\u662f\u5b9a\u65f6\u5237\u65b0\u3002\u4f46\u8fd9\u6837\u4e5f\u6709\u4e2a\u95ee\u9898\uff0c\u5c31\u662f\u5982\u679cTimerTask\u7684run\u65b9\u6cd5\u5199\u5f97\u8fc7\u957f\uff0c\u6267\u884c\u65f6\u95f4\u8d85\u8fc7\u4e86\u8bbe\u7f6e\u7684\u7ebf\u7a0b\u95f4\u9694\u65f6\u95f4\uff0c\u5c31\u4f1a\u51fa\u73b0\u7ebf
\n\u7a0b\u91cd\u53e0\u7684\u60c5\u51b5\u3002\u7ebf\u7a0b\u91cd\u53e0\u4f1a\u9020\u6210\u8bf8\u5982\u6e38\u620f\u901f\u5ea6\u7a81\u7136\u52a0\u5feb\u7b49Bug\u3002
\u5728Runnable\u63a5\u53e3\u5b9a\u4e49\u7684\u7ebf\u7a0b\u91cc\uff0c\u6709\u4e24\u79cd\u7b49\u5f85\u65b9\u6cd5\uff0c\u4e00\u79cd\u662fwait\uff0c\u4e00\u79cd\u662fsleep\uff0c\u5982\u679c\u4f7f\u7528wait\u65b9\u6cd5\uff0c\u5219\u8981\u6ce8\u610f\u5728\u7ebf\u7a0brun\u65b9\u6cd5\u91cc\uff0c\u7528synchonized\u6807\u5fd7\u7b26\u5c06\u8be5\u7ebf\u7a0b\u8bbe\u7f6e\u4e3a\u540c\u6b65\u9501\u5b9a\u72b6\u6001\uff0c\u5426\u5219\u4f1a\u51fa\u73b0java.lang.IllegalMonitorStateException\u5f02\u5e38\uff0c\u5927\u81f4\u610f\u601d\u662f\u7ebf\u7a0b\u5f53\u524d\u8bf7\u6c42\u7684\u76d1\u89c6\u5668\u5bf9\u8c61\u4e0d\u80fd\u54cd\u5e94\uff0c\u56e0\u4e3a\u88ab\u522b\u7684\u7ebf\u7a0b\u5360\u7528\u4e86\u3002<\/p>\n
\u7ebf\u7a0b\u5728J2ME\u91cc\u975e\u5e38\u91cd\u8981\uff0c\u4e00\u5207\u52a8\u6001\u6548\u679c\uff08\u5f53\u7136\u8fd9\u662f\u6e38\u620f\u7684\u524d\u63d0\uff09\u90fd\u662f\u901a\u8fc7\u7ebf\u7a0b\u6765\u64cd\u4f5c\uff0c\u56e0\u6b64\uff0c\u5bf9\u7ebf\u7a0b\u7684\u63a7\u5236\u662f\u503c\u5f97\u7814\u7a76\u7684\u4e00\u4e2a\u95ee\u9898\u3002\u5982\u4f55\u4f18\u5316\u4ee3\u7801\uff0c\u4f7f\u7ebf\u7a0b\u80fd\u591f\u5728\u8db3\u591f\u77ed\u7684\u95f4\u9694\u65f6\u95f4\u5185\u6b63\u5e38\u5237\u65b0\uff0c\u6362\u8a00\u4e4b\uff0c\u8fd9\u5c31\u662f\u5927\u5bb6\u8ba8\u8bba\u7684FPS\u95ee\u9898\u3002\u7a0b\u5e8f\u4f18\u5316\u505a\u5f97\u597d\uff0c\u5219\u7ebf\u7a0b\u95f4\u9694\u65f6\u95f4\u53ef\u4ee5\u8db3\u591f\u77ed\uff0c\u4f7f\u5f97FPS\u53ef\u4ee5\u8db3\u591f\u9ad8\uff0c\u6e38\u620f\u7684\u6d41\u7545\u5ea6\u5f53\u7136\u5c31\u8d8a\u9ad8\u3002
\u516d\uff0eJ2ME\u5f00\u53d1\u4e2d\u7684\u597d\u4e60\u60ef
1. \u591a\u5199\u6ce8\u91ca\uff0c\u5b8c\u5907\u7684\u6ce8\u91ca\u4e0d\u7ba1\u662f\u5bf9\u4f60\u81ea\u5df1\uff0c\u8fd8\u662f\u5bf9\u522b\u4eba\uff0c\u90fd\u662f\u5f88\u6709\u597d\u5904\u7684\uff0c\u5728\u8c03\u8bd5\u4e2d\u4e5f\u4f1a\u8d77\u5f88\u5927\u7684\u5e2e\u52a9\u3002
2. \u5728\u91cd\u8981\u6d41\u7a0b\u7684\u5404\u4e2a\u73af\u8282\u8bbe\u7f6e\u4e00\u4e9b\u76d1\u542c\u70b9\uff0c\u5176\u5b9e\u5f88\u7b80\u5355\uff0c\u5c31\u662f\u7528symstem.out.println()\u6765\u8f93\u51fa\u4e00\u4e9b\u6807\u5fd7\u7b26\u53f7\u5c31\u53ef\u4ee5\u4e86\uff0c\u8fd9\u6837\u53ef\u4ee5\u76d1\u542c\u4f60\u7684\u7a0b\u5e8f\u5728\u8fd0\u884c\u7684\u65f6\u5019\uff0c\u8d70\u5230\u54ea\u4e00\u6b65\u3002
3. \u4e0d\u8981\u5199\u592a\u591a\u7684\u7c7b\uff0c\u5c3d\u91cf\u6574\u5408\u8d44\u6e90\uff0c\u4e0d\u7528\u7684\u53d8\u91cf\u6216\u8005\u65b9\u6cd5\uff0c\u5c3d\u91cf\u53bb\u6389\u3002
4. \u719f\u7ec3\u638c\u63e1\u5404\u79cd\u5e38\u89c1\u7684\u5f02\u5e38\uff0c\u4e0d\u8981\u592a\u4f9d\u8d56\u4e8e\u95ee\u522b\u4eba\u548c\u7ffb\u4e66\uff0c\u8fd9\u4e9b\u5e94\u8be5\u662f\u4e00\u4e2a\u5408\u683c\u7684\u7a0b\u5e8f\u5458\u5e94\u8be5\u719f\u7ec3\u4e8e\u5fc3\u7684\u4e1c\u897f\u3002
5. \u5bf9\u4e0d\u719f\u6089\u7684\u7c7b\uff0c\u5e94\u8be5\u591a\u5199\u5c0f\u4ee3\u7801\u6765\u5b9e\u9a8c\u5176\u7528\u6cd5\uff0c\u522b\u4eba\u8bb2\u7684\u6c38\u8fdc\u4e0d\u5982\u81ea\u5df1\u7814\u7a76\u51fa\u6765\u7684\u7ed3\u679c\u7262*\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
J2ME\u65b9\u9762\u5f00\u53d1\u7684\u8d44\u6599\uff0c\u786e\u5b9e\u662f\u5c11\u4e4b\u53c8\u5c11\uff0c\u4e00\u822c\u7ed9\u65b0\u624b\u63a8\u8350\u7684\u90fd\u662f…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"","_lmt_disable":"","footnotes":""},"categories":[101],"tags":[],"class_list":["post-337","post","type-post","status-publish","format-standard","hentry","category-college-life"],"_links":{"self":[{"href":"https:\/\/fanhaijun.com\/index.php?rest_route=\/wp\/v2\/posts\/337","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fanhaijun.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fanhaijun.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fanhaijun.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fanhaijun.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=337"}],"version-history":[{"count":0,"href":"https:\/\/fanhaijun.com\/index.php?rest_route=\/wp\/v2\/posts\/337\/revisions"}],"wp:attachment":[{"href":"https:\/\/fanhaijun.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=337"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fanhaijun.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=337"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fanhaijun.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=337"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}