1 package com.it.poiTest;
 2
 3 import java.io.FileNotFoundException;
 4 import java.io.FileOutputStream;
 5 import java.io.IOException;
 6
 7 import org.apache.poi.ss.usermodel.Sheet;
 8 import org.apache.poi.xssf.usermodel.XSSFWorkbook;
 9
10 public class CreateWorkBook {
11     public static void main(String[] args) {
12         //可以表示xls和xlsx格式文件的类
13         XSSFWorkbook  workbook = new XSSFWorkbook();
14         try {
15             FileOutputStream out = new FileOutputStream("createWorkBook.xlsx");
16             workbook.write(out);
17             out.close();
18             System.out.println("createWorkBook success");
19         } catch (FileNotFoundException e) {
20             e.printStackTrace();
21         } catch (IOException e) {
22             e.printStackTrace();
23         }
24
25
26     }
27 }

 1 package com.it.poiTest;
 2
 3 import java.io.FileNotFoundException;
 4 import java.io.FileOutputStream;
 5 import java.io.IOException;
 6
 7 import org.apache.poi.ss.usermodel.Sheet;
 8 import org.apache.poi.xssf.usermodel.XSSFWorkbook;
 9
10 public class CreateWorkBook {
11     public static void main(String[] args) {
12         //可以表示xls和xlsx格式文件的类
13         XSSFWorkbook  workbook = new XSSFWorkbook();
14         try {
15             //新创建的xls需要新创建新的工作簿，offine默认创建的时候会默认生成三个sheet
16             Sheet sheet = workbook.createSheet("first sheet");
17             FileOutputStream out = new FileOutputStream("createWorkBook.xlsx");
18             workbook.write(out);
19             out.close();
20             System.out.println("createWorkBook success");
21         } catch (FileNotFoundException e) {
22             e.printStackTrace();
23         } catch (IOException e) {
24             e.printStackTrace();
25         }
26
27
28     }
29 }