Frequently Asked Questions and Technical Support for FASTTEXCEL WRITER framework

Frequently Asked Questions and Technical Support for FASTTEXCEL WRITER framework Fastexcel Writer is a powerful Java library that is used to quickly create, edit and export data in Excel files.This article will answer some common questions and provide related technical support and example code. Question 1: How to use Fastexcel Writer to create a new Excel file? It is very simple to create a new Excel file with Fastexcel Writer.First, you need to create a new Workbook object: Workbook workbook = new Workbook(); Then you can create a new sheet object through the Workbook object: Sheet sheet = workbook.createSheet("Sheet1"); Next, you can use the sheet object to add data and setting styles: // adding data sheet.setValue(0, 0, "Hello"); sheet.setValue(0, 1, "World"); // Set style CellStyle style = workbook.createCellStyle(); Font font = workbook.createFont(); font.setBold(true); style.setFont(font); sheet.setCellStyle(0, 0, style); Finally, you can save the Workbook object as an excel file: workbook.save("path/to/save/file.xlsx"); Question 2: How to add data to existing Excel files? It is also very simple to add data to the existing Excel file with Fastexcel Writer.First, you need to load the existing Excel file: Workbook workbook = new Workbook(); workbook.load("path/to/existing/file.xlsx"); Then you can obtain the sheet object and add data through the Workbook object: Sheet sheet = workbook.getSheet(0); // adding data sheet.setValue(1, 0, "Fast"); sheet.setValue(1, 1, "Excel"); Finally, you can save the workbook object back to the original file: workbook.save("path/to/existing/file.xlsx"); Question 3: How to set the style of the cell? Fastexcel Writer provides rich style settings.You can create CellStyle and FONT objects to set the style and font of the cell.The following is an example: CellStyle style = workbook.createCellStyle(); Font font = workbook.createFont(); font.setBold(true); style.setFont(font); sheet.setCellStyle(0, 0, style); In the above examples, we created a new CellStyle object, then set up a thick font, and applied the style to the first cell. Question 4: How to set the format of the cell? By using the setCellValue method of Fastexcel Writer, you can set different data formats for cells.For example, you can set the date format, digital format, etc.The following is an example: // Set the date format sheet.setCellValue(0, 0, LocalDate.now(), "yyyy-MM-dd"); // Set the number format sheet.setCellValue(1, 0, 123.45, "#,##0.00"); In the above examples, we set a date and a number with the SetcellValue method, and set the corresponding format for them. Question 5: How to merge the cell? By using the Mergecells method of Fastexcel Writer, you can merge multiple cells into one cell.The following is an example: // Merge Cells sheet.mergeCells(0, 0, 0, 1); In the above example, we merge the first and second cells of the first line into a cell. Question 6: How to set up the column width and height? You can use the Setcolumnwidth and SetRowheight methods of Fastexcel Writer to set up column width and height.The following is an example: // Set the column width sheet.setColumnWidth(0, 20); // Set up height sheet.setRowHeight(0, 30); In the above examples, we set the width of the first column to 20, and set the height of the first line to 30. These are the answers to the FASTEXCEL Writer framework and related technical support.Through this article, you should be able to better understand how to create, edit and export Excel files with Fastexcel Writer.If you encounter any problems during use, please consult our technical support team at any time.