Commands not all working in J2ME app - java-me

Question

Part of my j2me project involves use of the filesystem, so I'm starting with a simple file browser. The current issue I'm facing is the implementation of the command processor. To wit:
<CODE>
public void commandAction(Command c, Displayable d) {
if (c.getLabel().equals("Exit")) {
notifyDestroyed();
}
// File retrieval code (or call to it) to go here later.
if (c.getLabel().equals("Enter")) {
current_name = getRidOfTrailingSlash(current_name)
+ "/" + mainscreen.getString(mainscreen.getSelectedIndex());
// + "/" + "MemoryCard/";
System.exit(0);
if (! setName(current_name)) {
dirlist = rootlist;
current_name = "/";
}
showDirs();
}
if (c.getLabel().equals("Up Dir")) {
if (current_name.equals("/")) return;
current_name = getRidOfTrailingSlash(current_name);
if (setName(current_name)) current_name = current_fc.getPath();
else current_name = "/";
if (current_name.equals("/")) dirlist = rootlist;
else {
try {
dirlist = current_fc.list();
} catch (IOException ioe) {}
}
showDirs();
}
if (c.getLabel().equals("Create")) {
System.exit(1);
// Create code to be added later
}
if (c.getLabel().equals("Delete")) {
System.exit(2);
// Delete code to be added later
}
} // End of command actions
</CODE>
I am working on debugging the code for "Enter", and plan to write the code for "Create" and "Delete" at a later date. So for now I have them exit to an expected Security exception.
The code that sets up the commands is as follows:
<CODE>
public String getRidOfTrailingSlash(String s) {
if (s.equals("/")) return "";
int len = s.length();
String end = s.substring(len - 1);
if (end.equals("/")) s = s.substring(len - 2);
return s;
}
public List makeFileList(Enumeration names, String[] cmds) {
int i,s,cmdtype;
String c;
List l = new List(current_name, List.EXCLUSIVE);
while (names.hasMoreElements()) {
c = (String) names.nextElement();
l.append(c, null);
}
s = cmds.length;
for (i=0; i<s; i++) {
c = cmds[i];
if (c.equalsIgnoreCase("Exit")) {
cmdtype = Command.EXIT;
} else
if (c.equalsIgnoreCase("Up Dir")) {
cmdtype = Command.BACK;
} else {
cmdtype = Command.BACK;
}
// I've also tried using ITEM, OK, and one or two other
// command types for the default. Same effect.
l.addCommand(new Command(c, cmdtype, 1));
}
return l;
}
private void showDirs() {
String commands[] = { "Enter", "Up Dir", "Create", "Delete", "Exit" };
mainscreen = makeFileList(dirlist, commands);
mainscreen.setCommandListener(this);
Display.getDisplay(this).setCurrent(mainscreen);
}
</CODE>
My current issue is that the commands are not all being executed. "Exit" and "Up Dir" are working properly. However, the other three commands don't function at all in the Emulator. They show up in the menus, but selecting them does absolutely nothing when they should be routing the program flow through the System.exit() calls. If I select any of these any number of times, "Up Dir" and "Exit" still work afterward. Furthermore, the select function in the file list doesn't do anything either.
On the phone that I'm writing this for (An LG Rumor Reflex), the select function (checking and unchecking items in the list) works, as do the commands "Create", "Delete", "Up Dir", and "Exit". However, the "Enter" command doesn't even appear in the menu!
What am I doing wrong, and why the different behavior on the phone versus the Emulator?