question: protected boolean drawTopBorder ( Component c , Graphics g , int x , int y , int width , int height ) { if ( super . drawTopBorder ( c , g , x , y , width , height ) && frame . isResizable ( ) ) { g . setColor ( getFrameShadow ( ) ) ; g . drawLine ( CORNER_SIZE - 1 , y + 1 , CORNER_SIZE - 1 , y + 4 ) ; g . drawLine ( width - CORNER_SIZE - 1 , y + 1 , width - CORNER_SIZE - 1 , y + 4 ) ; g . setColor ( getFrameHighlight ( ) ) ; g . drawLine ( CORNER_SIZE , y , CORNER_SIZE , y + 4 ) ; g . drawLine ( width - CORNER_SIZE , y , width - CORNER_SIZE , y + 4 ) ; return true ; } return false ; }
target:  Draws the InternalFrameBorder's top border.