In Java, once you set the Java array size it is fixed, and it can’t be changed. This puts Java in sharp contrast to other programming languages like JavaScript where arrays resize dynamically.

The JTable class offers rich functionality for grid-like data display. This Java tip addresses common display issues related to dynamically changing such things as scroll bars, column width, and ...

Java has no notion of a "current working directory" per se IIRC - user.dir is not always set to the directory the user started the app from. You can find that however - search in Google groups.