{"id":3889,"date":"2022-07-10T17:32:16","date_gmt":"2022-07-10T12:02:16","guid":{"rendered":"https:\/\/sheetstips.com\/?p=3889"},"modified":"2022-07-10T17:32:16","modified_gmt":"2022-07-10T12:02:16","slug":"how-to-create-formula-cell-in-excel-sheet-using-java-and-apache-poi","status":"publish","type":"post","link":"https:\/\/sheetstips.com\/how-to-create-formula-cell-in-excel-sheet-using-java-and-apache-poi\/","title":{"rendered":"How to Create Formula Cell in Excel Sheet using Java and Apache POI?"},"content":{"rendered":"

In this post, let us look at how to create a formula cell in an excel sheet using Apache POI.<\/p>\n

Here, we will create an Excel file with three columns of values, and the last column will be the formula cell, which will be calculated from the other cells by defining a specific formula.<\/p>\n

We will create the formula cell by Multiplying<\/strong> all of the other data in the cells.<\/p>\n

Apache POI library in Java:<\/strong><\/p>\n

ApachePOI is an abbreviation for Poor Obfuscation Implementation, a Java API for reading and writing Microsoft documents. It includes the Wordbook, Sheet, Row, and Cell classes and interfaces. Apache POI may be used to access files with the \u2018xlsx\u2019 extension as well as files with the \u2018xlsx\u2019 extension.<\/p>\n

Apache POI is a free and open-source Java library for creating and manipulating Microsoft Office file formats. The following file formats should be able to be created, modified, and displayed\/read using POI. For example, because java does not include built-in support for interacting with Excel files, we must search for open-source APIs to complete the job.<\/p>\n

Classes Used:<\/h4>\n

XSSFWorkbook:<\/strong> XSSFWorkbook. It is a class that represents both high-level and low-level Excel file formats. It is part of the org. apache. xssf.<\/p>\n

XSSFSheet:<\/strong><\/p>\n

public class XSSFSheet extends POIXMLDocumentPart implements Sheet<\/pre>\n
It is a High-level representation of a SpreadsheetML worksheet. Sheets are the central structures within a workbook and are where the majority of the spreadsheet work is done. The worksheet, which is displayed as a grid of cells, is the most used type of sheet. Text, numbers, dates, and formulas can all be entered into worksheet cells. Formatting cells is also possible.<\/p>\n
FileOutputStream:<\/strong><\/p>\n
FileOutputStream(File file) class creates a file output stream to write to the file provided File object.<\/p>\n
FileInputStream:<\/strong><\/p>\n
A FileInputStream reads bytes from a file in the file system. The files that are available are determined by the host environment. FileInputStream is intended for reading raw bytes streams such as image data. Consider using FileReader to read character streams.<\/p>\n
Pre-requisites:<\/strong><\/p>\n
We required the following software on your computers to work with these.<\/p>\n