java - Apache POI Excel row color is only black and doesn't change -


i trying make excel files background 1 row white , other aqua color. reason whatever color changes black.

private void writetable(table table, row row, cellstyle style){     if(row.getrownum() % 2 == 0) {         style.setfillbackgroundcolor(indexedcolors.aqua.getindex());         style.setfillpattern(cellstyle.solid_foreground);     }     style.setwraptext(true);     cell cell = row.createcell(0);     cell.setcellvalue(table.index);     cell.setcellstyle(style);      //and continues other cells }

it doesn't change whatever do, if try grey_25_percent black. here's picture of excel file

if setting foreground color, use

cellstyle.setfillpattern(fillpatterntype.solid_foreground);

if setting background color, use

style.setfillpattern(fillpatterntype.thick_backward_diag);

or

style.setfillpattern(fillpatterntype.thin_backward_diag);

the foreground , background colors seem 'stack' (red + blue = purple) if set foreground fill pattern before background fill pattern, not other way round. there several other fill patterns can choose from. note color not applied if not change default fill pattern.


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