使用 Apache POI 在Java中的 Excel 文件中创建工作表

对于给定的 Excel 文件（此处为Geeks.xlsx ），需要在其中创建工作表。

脚步：

1. 创建Java Maven 项目
2. 在 pom.xml 文件中添加依赖

   
   
         org.apache.poi
         poi
         3.12
       
       
         org.apache.poi
         poi-ooxml
         3.12
       
   

3. 在 javaResource 文件夹中创建一个类

   import java.io.*;
   import org.apache.poi.hssf.usermodel.HSSFWorkbook;
   import org.apache.poi.ss.usermodel.Sheet;
   import org.apache.poi.ss.usermodel.Workbook;
     
   public class CreateSheet {
       public static void main(String[] args) 
         throws FileNotFoundException, IOException
       {
     
           // Creating Workbook instances
           Workbook wb = new HSSFWorkbook();
     
           // An output stream accepts output bytes and sends them to sink.
           OutputStream fileOut = new FileOutputStream("Geeks.xlsx");
             
           // Creating Sheets using sheet object
           Sheet sheet1 = wb.createSheet("Array");
           Sheet sheet2 = wb.createSheet("String");
           Sheet sheet3 = wb.createSheet("LinkedList");
           Sheet sheet4 = wb.createSheet("Tree");
           Sheet sheet5 = wb.createSheet("Dynamic Programing");
           Sheet sheet6 = wb.createSheet("Puzzles");
             
     
   System.out.println("Sheets Has been Created successfully");
     
           wb.write(fileOut);
       }
   }
   

输出：

Sheets Has been Created successfully

这里在 geeks.xlsx 文件中创建了 6 张表：