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Thread: Writing in the column excel

  1. #1
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    Default Writing in the column excel

    public void scriviNewId() throws IOException {
    		String FILE_NAME = "C:\\Users\\java\\Desktop\\x.xlsx";
    		InputStream inp = new FileInputStream(FILE_NAME);
    		Workbook wb = WorkbookFactory.create(inp);
    		Sheet sheet = wb.getSheetAt(0);
     
    		//Vai a leggere la nuova colonna
    		Cliente cliente = new Cliente();
    		cliente.fillVeicoloId();
     
    		for (int i = 0; i < cliente.getVeicoloId().size(); i++) {
    			Row row = sheet.createRow(i + 1); //Inizia alla riga 1
    			System.out.println("Scrivi:  " + cliente.getVeicoloId().get(i));
     
    			// Specific cell number 
    	        Cell cell = row.createCell(5); 
     
    	        // putting value at specific position 
    	        cell.setCellValue(cliente.getVeicoloId().get(i)); 
     
    			//row.createCell(5).setCellValue(cliente.getVeicoloId().get(i)); // Colonna 34
     
    		}
     
    		FileOutputStream fileOut = new FileOutputStream(FILE_NAME);
    		wb.write(fileOut);
    		fileOut.close();
     
    	}


    Why does it overwrite other columns?

  2. #2
    Super Moderator Norm's Avatar
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    Default Re: Writing in the column excel

    Can you post some example of what the code is doing?
    Add some comments to show what you want it to do instead.
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: Writing in the column excel

    In practice, I like to write this code in column F.
    But when he writes in column F, he deletes the data from the other columns, how come?

    column

    A B C D E F
    0
    1
    5
    ..


    the other columns delete them and I do not want the data of the other columns to be deleted

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    Default Re: Writing in the column excel

    In most cases When updating the contents of a file, ALL the data that you want to be in the file needs to be written to the file.

    I don't know how the Workbook write method works. Does it automatically fill in all the columns?
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: Writing in the column excel

    yes the column is completely filled in, how can I solve the problem?

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    Default Re: Writing in the column excel

    I don't know how the Workbook write method works.
    Try this:
    Fill in all the columns you want to be written before calling the write method.
    If you don't understand my answer, don't ignore it, ask a question.

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