This week's book giveaway is in the Mac OS forum. We're giving away four copies of a choice of "Take Control of Upgrading to Yosemite" or "Take Control of Automating Your Mac" and have Joe Kissell on-line! See this thread for details.
What kind of window are You talking about ? Is it java.awt.Window or javax.swing.JWindow or javax.swing.JFrame ? I am asking because I cannot find resizeTo() method in any of these classes ! If You mean javax.swing.JFrame.resize(), it is better not to use it because it's deprecated.
Hints: To resize window use jFrame.setSize(100,100) method. To maximize window use jFrame.setExtendedState(JFrame.MAXIMIZED_BOTH).