3. DoubleBufferPanel.
- By Dilshan De Silva and Susan Pearson
- March 14, 2000
Listing 3. DoubleBufferPanel.
class MyApp extends Frame { ...
// decide if we want to use double buffering explicitly or rely on pjava
EContainer p = null;
Class comp = Component.class;
try {
Method dblchk = comp.getMethod (
"isDoubleBuffered", new Class [0]);
// method exists
Boolean chk = (Boolean) dblchk.invoke (this, null);
if (chk.booleanValue()) {
// no need for double buffering ourselves
p = new EContainer ();
}
}
catch (NoSuchMethodException x) {
}
if (p == null) {
// check if we made one, else force double buffering
p = new DoubleBufferPanel ();
}
...
}