pack : Java Glossary

pack

pack resizes the Window to the minimum size to satisfy the preferred size of each of the components in the layout, then computes the layout by calling validate. pack also ensures the peers of the Window and its parent are present by calling addNotify if necessary. In constrast validate uses the current size of the Window.

pack is a method of Window, and validate of Container. Thus you can use pack on Frames but not Panels. validate works on Panels and Frames.

pack makes its Window displayable but not necessarily visible. Displayable means it has been hooked into the native GUI, any peer objects have been created, and addNotify has been called.

Sun’s Javadoc on pack package : available:

on the web at java.sun.com
in the current JDK 1.6.0_17 or in the old JDK 1.5.0_22 on your local Windows J: drive.

invalidate
revalidate
validate

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