-If I use the 64 bit Oracle java javac compiler to produce class files, will those classes

run on a 32 bit Oracle java runtime or not?

-I have used JMenu.setMNemonic(KeyEvent.VK_alt); to enable the alt key as a default

mnemonic key to open a JMenu.  Without programming an EventListener implementation,

is it possible to set a mnemonic, but one function all like this, to close my JMenu as well?

-Is it possible to instantiate a

java.util.Timer

javax.swing.Timer

javax.management.timer.Timer

to work in NanoSeconds, or even pico seconds or further, and not just MilliSeconds?

Or will I have to program my own, or look at a separate open source offering?