question: public TransparentGlassPanePanel ( ImageIcon icon , String text , Color backgroundColor , float transparency ) { setLayout ( new GridBagLayout ( ) ) ; GridBagConstraints gbc = new GridBagConstraints ( ) ; gbc . gridy = 0 ; gbc . gridx = 0 ; JLabel iconLabel = new JLabel ( icon ) ; add ( iconLabel , gbc ) ; gbc . gridy += 1 ; label = new JLabel ( text ) ; add ( label , gbc ) ; if ( transparency > 1 ) { transparency = 1 ; } else if ( transparency < 0 ) { transparency = 0 ; } Color transparentColor = new Color ( backgroundColor . getRed ( ) , backgroundColor . getGreen ( ) , backgroundColor . getBlue ( ) , ( int ) ( transparency * 255 ) ) ; setBackground ( transparentColor ) ; setOpaque ( false ) ; }
target:  Creates a transparent panel with a loading icon and a text.