Menu1public class Menu1 extends Frame
| Fields Summary |
|---|
| String[] | flavors | | TextField | t | | MenuBar | mb1 | | Menu | f | | Menu | m | | Menu | s | | CheckboxMenuItem[] | safety | | MenuItem[] | file | | MenuBar | mb2 | | Menu | fooBar | | MenuItem[] | other | | Button | b |
| Constructors Summary |
|---|
public Menu1()
for(int i = 0; i < flavors.length; i++) {
m.add(new MenuItem(flavors[i]));
// Add separators at intervals:
if((i+1) % 3 == 0)
m.addSeparator();
}
for(int i = 0; i < safety.length; i++)
s.add(safety[i]);
f.add(s);
for(int i = 0; i < file.length; i++)
f.add(file[i]);
mb1.add(f);
mb1.add(m);
setMenuBar(mb1);
t.setEditable(false);
add("Center", t);
// Set up the system for swapping menus:
add("North", b);
for(int i = 0; i < other.length; i++)
fooBar.add(other[i]);
mb2.add(fooBar);
|
| Methods Summary |
|---|
| public boolean | action(java.awt.Event evt, java.lang.Object arg)
if(evt.target.equals(b)) {
MenuBar m = getMenuBar();
if(m == mb1) setMenuBar(mb2);
else if (m == mb2) setMenuBar(mb1);
}
else if(evt.target instanceof MenuItem) {
if(arg.equals("Open")) {
String s = t.getText();
boolean chosen = false;
for(int i = 0; i < flavors.length; i++)
if(s.equals(flavors[i])) chosen = true;
if(!chosen)
t.setText("Choose a flavor first!");
else
t.setText("Opening "+ s +". Mmm, mm!");
}
else if(evt.target.equals(file[1]))
System.exit(0);
// CheckboxMenuItems cannot use String
// matching; you must match the target:
else if(evt.target.equals(safety[0]))
t.setText("Guard the Ice Cream! " +
"Guarding is " + safety[0].getState());
else if(evt.target.equals(safety[1]))
t.setText("Hide the Ice Cream! " +
"Is it cold? " + safety[1].getState());
else
t.setText(arg.toString());
}
else
return super.action(evt, arg);
return true;
| | public boolean | handleEvent(java.awt.Event evt)
if(evt.id == Event.WINDOW_DESTROY)
System.exit(0);
else
return super.handleEvent(evt);
return true;
| | public static void | main(java.lang.String[] args)
Menu1 f = new Menu1();
f.resize(300,200);
f.show();
|
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