Java uses poi to operate excel instance analysis

<project xmlns="/POM/4.0.0"xmlns:xsi="http:///2001/XMLSchema-instance" 
 xsi:schemaLocation="/POM/4.0.0http:///maven-v4_0_0.xsd"> 
 <modelVersion>4.0.0</modelVersion> 
 <groupId>excelDemo1</groupId> 
 <artifactId>excelDemo1</artifactId> 
 <packaging>war</packaging> 
 <version>0.0.1-SNAPSHOT</version> 
 <name>excelDemo1 Maven Webapp</name> 
 <url></url> 
 <dependencies> 
  <dependency> 
   <groupId>junit</groupId> 
   <artifactId>junit</artifactId> 
   <version>3.8.1</version> 
   <scope>test</scope> 
  </dependency> 
  <dependency> 
  <groupId></groupId> 
  <artifactId>poi</artifactId> 
  <version>3.8</version> 
  </dependency> 
 </dependencies> 
 <build> 
  <finalName>excelDemo1</finalName> 
 </build> 
</project>

package excelDemo1; 
  
import ; 
import ; 
import ; 
import ; 
import ; 
import ; 
  
public class ExcelDemo0 { 
  /**
    * Java generates excel file and writes it to disk
    *
    * @author: tuzongxun
    * @Title: main
    * @param@param args
    * @return void
    * @date Apr 28,2016 7:32:52 PM
    * @throws
    */ 
  public static void main(String[] args) { 
    //C:\Users\tuzongxun123\Desktop desktop, the slashes of Windows and Linux are different, and Java requires "/" to be escaped, which can be implemented cross-platform    File file = new File("C:" +  + "Users" +  
       + "tuzongxun123" +  + "Desktop" +  
       + "ioFile" +  + ""); 
    try { 
      OutputStream outputStream = new FileOutputStream(file); 
      // Create an excel file. Note that the hssf here is available in Excel2007 and previous versions, and it is not available after 2007. Use xssf to      HSSFWorkbook workbook = new HSSFWorkbook(); 
      // Create an excel worksheet      HSSFSheet sheet = ("user"); 
      // Add a row to the worksheet      HSSFRow row = (0); 
      // Add two cells to the specified row      (0).setCellValue("name"); 
      (1).setCellValue("password"); 
      // Call the output stream to write the excel file to disk      (outputStream); 
      // Turn off the output stream      (); 
    } catch (Exception e) { 
      (); 
    } 
  } 
} 

package excelDemo1; 
  
import ; 
import ; 
import ; 
import ; 
import ; 
import ; 
import ; 
  
/**
  * Read excel file
  *
  * @author tuzongxun123
  *
  */ 
public class ExcelDemo2 { 
  public static void main(String[] agrs) { 
    try { 
      // Get the excel file input stream      FileInputStream fileInputStream = new FileInputStream("C:" 
         +  + "Users" +  
         + "tuzongxun123" +  + "Desktop" 
         +  + "ioFile" +  + ""); 
      BufferedInputStream bufferedInputStream = newBufferedInputStream( 
         fileInputStream); 
      POIFSFileSystem fileSystem = new POIFSFileSystem( 
         bufferedInputStream); 
      // Get the excel file      HSSFWorkbook hssfWorkbook = new HSSFWorkbook(fileSystem); 
      // Get the specified excel workbook according to the name      HSSFSheet sheet = ("user"); 
      // You can actually use () to traverse here      for (int i = 1;; i++) { 
       HSSFRow row = (i); 
       if (row != null) { 
         String nameString1 = (0).getStringCellValue(); 
         String password = (i).getStringCellValue(); 
         ("name:" + nameString1); 
         ("password:" + password); 
         (); 
       } else { 
         (); 
         return; 
       } 
      } 
  
    } catch (Exception e) { 
      (); 
    } 
  } 
}