java.lang.Error: Unresolved compilation problem:
The method setCommandListener(CommandListener) in the type Displayable is not applicable for the arguments (heloow)
at heloow. <init> (+9)
at java.lang.Class.runCustomCode(+0)
at com.sun.midp.midlet.MIDletState.createMIDlet(+19)
at com.sun.midp.midlet.Scheduler.schedule(+52)
at com.sun.midp.main.Main.runLocalClass(+28)
at com.sun.midp.main.Main.main(+116)
Execution completed.
700767 bytecodes executed
6 thread switches
740 classes in the system (including system classes)
3630 dynamic objects allocated (99144 bytes)
2 garbage collections (85424 bytes collected)
------解决方案--------------------------------------------------------
Command 没有setCommandListener()的方法，只有Displayable的子类才有setCommandListener()方法．