Dropdown Menu takes up more space

[tjingboem]

With FlatLaf the Dropdown Menu takes up more space.

[DevCharly]

This is because in FlatLaf the JComboBox has a minimum width of 72px by default.

You can disable minimum width for all combo boxes with e.g.:

UIManager.put( "ComboBox.minimumWidth", 0 );

of for single combo box with:

myComboBox.putClientProperty( "JComponent.minimumWidth", 0 );

[kunstmusik]

Thank you very much @DevCharly for the guidance!