question: @ Override public void paintValue ( Graphics gfx , Rectangle box ) { gfx . drawString ( m_matrix . size ( ) + " x " + m_matrix . size ( ) + " cost matrix" , box . x , box . y + box . height ) ; }
target:  Paints a graphical representation of the object. For the cost matrix it prints out the text "X x X matrix", where X is the size of the matrix.