Handaling XLS File In Java

This code will help you to handle xls file in java using apache poi.

package test;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.Iterator;

import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;

public class test {
public static void main(String[] args) {
String file="C:\\Users\\Documents\\file.xls";
File excelfile=new File(file);
FileInputStream excleFileInputStream;
try {
excleFileInputStream = new FileInputStream(excelfile);
HSSFWorkbook wb = new HSSFWorkbook(excleFileInputStream);
int noOfsheet =wb.getNumberOfSheets();
for(int i=0;i<noOfsheet;i++){
HSSFSheet sheet = wb.getSheetAt(i);
String wbName =sheet.getSheetName();
Iterator<Row> rowIterator = sheet.iterator();
while(rowIterator.hasNext()){
    Row row = rowIterator.next();
    Iterator<Cell> cellIterator = row.iterator();
    String rowString="";
    while(cellIterator.hasNext()){
    Cell cell = cellIterator.next();
    rowString=rowString+cell.toString()+" ; ";
    System.out.println(rowString);
    }
   
   
    }
}

} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}

}

Get root element of a xml/document.getDocumentElement() function in xml

your xml:

<employee>
<name>swati</name>
<id>1209202</id>
<department>audit</department>
</employee>

program:

import java.io.*;
import javax.xml.parsers.*;
import org.w3c.dom.*;
import org.xml.sax.*;

public class Util {

public static void main(String[] args) {

String xml="<employee><name>swati</name><id>1209202</id><department>audit</department></employee>"

System.out.println("get root element of xml");
root(xml) ;

}

public static void root(String xmlSource)
throws SAXException, ParserConfigurationException, IOException {
// Parse the given input
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
Document doc = builder.parse(new InputSource(new StringReader(xmlSource)));

System.out.println("Root element in xml is:"+doc.getDocumentElement());

}
}

doc.getDocumentElement() will give the root element of your xml document.

working with xml,convert a xml string to xml document

import java.io.*;
import javax.xml.parsers.*;
import org.w3c.dom.*;
import org.xml.sax.*;

public class Util {

public static void main(String[] args) {

String xml="<employee><name>swati</name><id>1209202</id><department>audit</department></employee>";

System.out.println("get xml document from string xml);
stringToDom(xml) ;
System.out.println("document is ready for use");

}

public static void stringToDom(String xmlSource)
throws SAXException, ParserConfigurationException, IOException {
// Parse the given input
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
Document doc = builder.parse(new InputSource(new StringReader(xmlSource)));
}

After document(doc) is created one can work on nodes,elements etc.

can save xml to files or can convert back to string and enjoy results.

I will post for more operations on xml documents.