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how do you get data from excel

By Obedient OcelotObedient Ocelot on Dec 05, 2020 
How do you do test using excel files in Java?
I use Apache POI libraries to read and write from excel file, 
I add the Apache POI dependencies to my pom file.
In order to connect I use following classes.
 	-FileInputStream from Java. it is used to create connection to the file.
    We pass the file path as constructor to it.
 	-WorkBook is a class that represents the excel file.  
    We create Workbook object using the FileInputStream object.
 	-Sheet represents a single sheet from the excel file.
    We create sheet using Workbook object. We can create 
    worksheet using the 0 based index.

   public String readExcel(String path, String sheetName, 
                                                 int rowNum, int colNum) {
        try {
            FileInputStream file = new FileInputStream(path);
            Workbook book = WorkbookFactory.create(file);
            Sheet sheet = book.getSheet(sheetName);
            Row row = sheet.getRow(rowNum);
	    	Cell cell = row.getCell(colNum);
            String cellData = cell.toString();
            return cellData;
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

How to get row and column numbers:
    int rowCount = sheet.getLastRowNum()+1; ==> why we add '+1'?
                                   Because row num starts from 0.
    int colCount = sheet.getRow(0).getLastCellNum();
    String sheetName = workSheet.getSheetName();

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