?? immutableimagedemo.java
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package immutableimagedemo;import javax.microedition.lcdui.*;import javax.microedition.midlet.*;public class immutableImageDemo extends MIDlet implements CommandListener{ private Display display; private ImageCanvas myCanvas; private Command arrayCmd = new Command("從數(shù)組讀取", Command.SCREEN, 1); private Command fileCmd = new Command("從文件讀取", Command.SCREEN, 1); private Command streamCmd = new Command("從輸入流讀取",Command.SCREEN, 1); private Command transCmd = new Command(" 翻轉(zhuǎn)圖像", Command.SCREEN, 1); private Command clarityCmd= new Command(" 透明圖像", Command.SCREEN, 1); private Command exitCmd = new Command(" 退出", Command.SCREEN, 1); public immutableImageDemo() { myCanvas = new ImageCanvas(); display = Display.getDisplay(this); myCanvas.addCommand(arrayCmd); myCanvas.addCommand(fileCmd); myCanvas.addCommand(streamCmd); myCanvas.addCommand(transCmd); myCanvas.addCommand(clarityCmd); myCanvas.addCommand(exitCmd); myCanvas.setCommandListener(this); } public void startApp() { display.setCurrent(myCanvas); } public void pauseApp() { } public void destroyApp(boolean unconditional) { } public void commandAction(Command cmd, Displayable disp) { if(cmd == exitCmd){ destroyApp(false); notifyDestroyed(); return; } if (cmd == arrayCmd){ myCanvas.type = myCanvas.ARRAY; } else if(cmd == fileCmd){ myCanvas.type = myCanvas.FILE; } else if(cmd == streamCmd){ myCanvas.type = myCanvas.STREA; } else if(cmd == transCmd){ myCanvas.type = myCanvas.TRANS; } else if(cmd == clarityCmd){ myCanvas.type = myCanvas.CLARITY; } myCanvas.repaint(); }}?? 快捷鍵說明
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