question: void addCell ( Component cell , boolean isHeader , CellConstraint constraint ) { if ( isHeader ) { headers . addElement ( cell ) ; } currentRow . addElement ( cell ) ; if ( currentRow . size ( ) > maxColumn ) { maxColumn = currentRow . size ( ) ; } if ( constraint != null ) { constraints . put ( cell , constraint ) ; } }
target:  Adds the given component as a cell to the end of the current row of the table