With one simple line of code, Java’s JOptionPane enables a program to prompt the user with a Windows-based input dialog box, and return any user input as a String.

For example, you right-click cmd.exe and select Run as administrator. A User Account Control (UAC) dialog box prompts you for your user name and password.

Q: Here’s my problem. Whenever I open a Word document, I get this message: “The command cannot be performed because a dialog box is open. Click OK, then close open dialog boxes to continue ...

A Field dialog box will appear. Inside the dialog box, there are various fields to choose from in the Field Name list. Select a field from the Field Name list on the left.