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excel sheet in java

Terrible Toad answered on November 26, 2022 Popularity 8/10 Helpfulness 4/10

answer excel sheet in java

excel sheet in java

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import java.io.File;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import java.io.FileOutputStream;
import java.util.Map;
import java.util.Set;
import java.util.TreeMap;
  
public class WriteDataToExcel {
  
    // any exceptions need to be caught
    public static void main(String[] args) throws Exception
    {
        // workbook object
        XSSFWorkbook workbook = new XSSFWorkbook();
  
        // spreadsheet object
        XSSFSheet spreadsheet
            = workbook.createSheet(" Student Data ");
  
        // creating a row object
        XSSFRow row;
  
        // This data needs to be written (Object[])
        Map<String, Object[]> studentData
            = new TreeMap<String, Object[]>();
  
        studentData.put(
            "1",
            new Object[] { "Roll No", "NAME", "Year" });
  
        studentData.put("2", new Object[] { "128", "Aditya",
                                            "2nd year" });
  
        studentData.put(
            "3",
            new Object[] { "129", "Narayana", "2nd year" });
  
        studentData.put("4", new Object[] { "130", "Mohan",
                                            "2nd year" });
  
        studentData.put("5", new Object[] { "131", "Radha",
                                            "2nd year" });
  
        studentData.put("6", new Object[] { "132", "Gopal",
                                            "2nd year" });
  
        Set<String> keyid = studentData.keySet();
  
        int rowid = 0;
  
        // writing the data into the sheets...
  
        for (String key : keyid) {
  
            row = spreadsheet.createRow(rowid++);
            Object[] objectArr = studentData.get(key);
            int cellid = 0;
  
            for (Object obj : objectArr) {
                Cell cell = row.createCell(cellid++);
                cell.setCellValue((String)obj);
            }
        }
  
        // .xlsx is the format for Excel Sheets...
        // writing the workbook into the file...
        FileOutputStream out = new FileOutputStream(
            new File("C:/savedexcel/GFGsheet.xlsx"));
  
        workbook.write(out);
        out.close();
    }
}

Popularity 8/10 Helpfulness 4/10 Language java

Source: Grepper

Tags: excel java

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Contributed on Nov 26 2022

Terrible Toad

0 Answers Avg Quality 2/10

excel sheet in java

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