question: void addFillComponents ( Container panel , int [ ] cols , int [ ] rows ) { Dimension filler = new Dimension ( 10 , 10 ) ; boolean filled_cell_11 = false ; CellConstraints cc = new CellConstraints ( ) ; if ( cols . length > 0 && rows . length > 0 ) { if ( cols [ 0 ] == 1 && rows [ 0 ] == 1 ) { panel . add ( Box . createRigidArea ( filler ) , cc . xy ( 1 , 1 ) ) ; filled_cell_11 = true ; } } for ( int index = 0 ; index < cols . length ; index ++ ) { if ( cols [ index ] == 1 && filled_cell_11 ) { continue ; } panel . add ( Box . createRigidArea ( filler ) , cc . xy ( cols [ index ] , 1 ) ) ; } for ( int index = 0 ; index < rows . length ; index ++ ) { if ( rows [ index ] == 1 && filled_cell_11 ) { continue ; } panel . add ( Box . createRigidArea ( filler ) , cc . xy ( 1 , rows [ index ] ) ) ; } }
target:  Adds fill components to empty cells in the first row and first column of the grid. This ensures that the grid spacing will be the same as shown in the designer.