Working with Colors in Apache POI and Aspose.Cells

Aspose.Cells - Working with Colors

Aspose.Cells provides a class, Workbook, that represents a Microsoft Excel file. The Workbook class contains a WorksheetCollection that allows access to each worksheet in the Excel file. A worksheet is represented by the Worksheet class. The Worksheet class provides a Cellscollection. Each item in the Cells collection represents an object of the Cell class.

Aspose.Cells provides the setStyle method in the Cell class that is used to set a cell’s formatting. Also, the Style object of the Style class can be used to configure font settings.

Java

 //Accessing cell from the worksheet

Cell cell = cells.get("B2");

Style style = cell.getStyle();

//Setting the foreground color to yellow

style.setBackgroundColor(Color.getYellow());

//Setting the background pattern to vertical stripe

style.setPattern(BackgroundType.VERTICAL_STRIPE);

//Saving the modified style to the "A1" cell.

cell.setStyle(style);

// === Setting Foreground ===

//Adding custom color to the palette at 55th index

Color color = Color.fromArgb(212,213,0);

workbook.changePalette(color,55);

//Accessing cell from the worksheet

cell = cells.get("B3");

//Adding some value to the cell

cell.setValue("Hello Aspose!");

//Setting the custom color to the font

style = cell.getStyle();

Font font = style.getFont();

font.setColor(color);

cell.setStyle(style);

Apache POI SS - HSSF XSSF - Working with Colors

CellStyle class is available to set background and fillpattern settings.

Java

 // Aqua background

CellStyle style = wb.createCellStyle();

style.setFillBackgroundColor(IndexedColors.AQUA.getIndex());

style.setFillPattern(CellStyle.BIG_SPOTS);

Cell cell = row.createCell((short) 1);

cell.setCellValue("X");

cell.setCellStyle(style);

// Orange "foreground", foreground being the fill foreground not the font color.

style = wb.createCellStyle();

style.setFillForegroundColor(IndexedColors.ORANGE.getIndex());

style.setFillPattern(CellStyle.SOLID_FOREGROUND);

cell = row.createCell((short) 2);

cell.setCellValue("X");

cell.setCellStyle(style);

Download Running Code

• GitHub

Download Sample Code

• GitHub

For more details, visit Colors and Background Patterns.