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To read an excel file, Apache POI provides certain easy-to-use APIs.
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File Input Stream file = new File Input Stream(new File("C:\test.xlsx")); //Get the workbook instance for XLS file XSSFWorkbook workbook = new XSSFWorkbook (file); //Get first sheet from the workbook XSSFSheet sheet = Sheet At(0); //Get iterator to all the rows in current sheet Iteratorimport org.hssf.usermodel. Open the excel using different API that we discussed above and set the cell’s value.
HSSFWorkbook workbook = new HSSFWorkbook(); HSSFSheet sheet = workbook.create Sheet("Sample sheet"); //Create a new row in current sheet Row row = sheet.create Row(0); //Create a new cell in current row Cell cell = row.create Cell(0); //Set value to new value Cell Value("Blahblah"); Updating an existing excel file is straight forward.
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