jframe - How identify the selected frame in java? -


because displaying multiple images in java programm, each image new jframe. need identify selected jframe in oder make changes on displayed image , show in same jframe.

so, how recognize last selected jframe ?

i suggest use other layout such cardlayout share same display space multiple panel instead of using multiple jframe.

see the use of multiple jframes, good/bad practice?

if want stick current approach create global static reference of type jframe keep reference of selected jframe.

use focuslistener keep track of selected jfarme

so, how recognize last selected jframe ?

keep references of opened jframe , iterate check jframe#isfocused() or jframe#isactive()


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