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how to read a exel file in kotlin

Sore Shrew answered on March 4, 2024 Popularity 1/10 Helpfulness 1/10

answer how to read a exel file in kotlin

how to read a exel file in kotlin

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package com.developersoapbox

import org.apache.poi.ss.usermodel.WorkbookFactory
import org.apache.poi.xssf.usermodel.XSSFWorkbook
import java.io.FileInputStream
import java.io.FileOutputStream

/**
    * Writes the value "TEST" to the cell at the first row and first column of worksheet.
    */
fun writeToExcelFile(filepath: String) {
    //Instantiate Excel workbook:
    val xlWb = XSSFWorkbook()
    //Instantiate Excel worksheet:
    val xlWs = xlWb.createSheet()

    //Row index specifies the row in the worksheet (starting at 0):
    val rowNumber = 0
    //Cell index specifies the column within the chosen row (starting at 0):
    val columnNumber = 0

    //Write text value to cell located at ROW_NUMBER / COLUMN_NUMBER:
    xlWs.createRow(rowNumber).createCell(columnNumber).setCellValue("TEST")

    //Write file:
    val outputStream = FileOutputStream(filepath)
    xlWb.write(outputStream)
    xlWb.close()
}

/**
    * Reads the value from the cell at the first row and first column of worksheet.
    */
fun readFromExcelFile(filepath: String) {
    val inputStream = FileInputStream(filepath)
    //Instantiate Excel workbook using existing file:
    var xlWb = WorkbookFactory.create(inputStream)

    //Row index specifies the row in the worksheet (starting at 0):
    val rowNumber = 0
    //Cell index specifies the column within the chosen row (starting at 0):
    val columnNumber = 0

    //Get reference to first sheet:
    val xlWs = xlWb.getSheetAt(0)
    println(xlWs.getRow(rowNumber).getCell(columnNumber))
}

fun main(args: Array<String>) {
    val filepath = "./test.xlsx"
    writeToExcelFile(filepath)
    readFromExcelFile(filepath)
}

Popularity 1/10 Helpfulness 1/10 Language kotlin

Source: www.developersoapbox.com

Tags: file kotlin

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Contributed on Mar 04 2024

Sore Shrew

0 Answers Avg Quality 2/10

how to read a exel file in kotlin

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