How do I change the background color of a cell in Apache POI?

getIndex()); backgroundStyle. setFillPattern(CellStyle. SOLID_FOREGROUND); backgroundStyle. setBorderBottom(CellStyle.

How do I get cell style in Apache POI?

Most used methods

setFont. set the font for this style.
setDataFormat. set the data format (must be a valid format)
setAlignment. set the type of horizontal alignment for the cell.
set the type of vertical alignment for the cell.
setWrapText. Set whether the text should be wrapped.
getDataFormat. get the index of the format.

How do I bold a cell in Excel in Java?

There exists a method “setCellStyle” in the class Cell, that takes an object of type HSSFCellStyle , which we can use for formatting. You can do anything with HSSFCellStyle, and we are going to see how to make cell bold with HSSFCellStyle. Let us get started. Create a workbook and worksheet to start with.

How do you assign a value to a cell in Excel in Java?

Steps to update excel file will be:

Open excel file in input mode (inputstream)
Use POI API and read the excel content.
Update cell’s value using different setCellValue methods.
Close the excel input file (inputstream)
Open same excel file in output mode (outputstream)
Write content of updated workbook in output file.

What is foreground and background color in Excel?

By default, the foreground or text color is black in MS Excel. You can change it as per your need from Home tab » Font group » Foreground color. Also you can change the foreground color by selecting the cell Right click » Format cells » Font Tab » Color.

How do you change the width of a cell in Excel in Java?

Setting the Width of a Column Set the width of a column by calling the Cells collection’s setColumnWidth method. The setColumnWidth method takes the following parameters: Column index, the index of the column that you’re changing the width of. Column width, the desired column width.

How do you make a cell style?

Quickly format a range of cells by choosing a table style.

For example, select cell B2 below.
On the Home tab, in the Styles group, choose a cell style.
On the Home tab, in the Styles group, click the bottom right down arrow.
Click New Cell Style.

What is XSSFWorkbook in Java?

XSSFWorkbook. It is a class that is used to represent both high and low level Excel file formats. It belongs to the org. apache. xssf.

How do you highlight a cell in Excel in Java?

Fill Color in Excel using Apache POI

CellStyle style = workbook. createCellStyle();
style. setFillForegroundColor(IndexedColors. BLUE. getIndex());
style. setFillPattern(CellStyle. SOLID_FOREGROUND);

How do I change font color in Apache POI in Excel?

Setting color can be used as heading or column name that increases the readability of excel file. In this example we will understand from scratch how to color in XLSX. All we need is to get an instance of CellStyle and then set the desired color to CellStyle and then assign it to XLSX cell. Create a XSSFWorkbook.

How can I write in Excel in Java?

How to Write Data into Excel Sheet using Java?

Create a blank workbook. XSSFWorkbook workbook = new XSSFWorkbook();
Create a sheet and name it. XSSFSheet spreadsheet = workbook.createSheet(” Student Data “);
Create a row. Row row = sheet.
Add cells to the sheet.
Repeat Steps 3 and 4 to write the complete data.

How do I change the background color of a cell in Apache POI?