Showing posts with label excel writer. Show all posts
Showing posts with label excel writer. Show all posts

Write an excel file using java code

Hello Buddies.

Trying to write an excel file using java code this time.

Full code is available here -

https://github.com/namitsharma99/fileHandlingUsingJava/tree/master/src/com/java/code


Here it goes -



package com.java.code;

import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;

public class WriteExcelFile {

public static void main(String[] args) {

List<String> employees = new ArrayList<String>();
employees.add("1,Namit,Engineer");
employees.add("2,Sharma,Developer");

try {
writeExcel(employees);
} catch (Exception e) {
e.printStackTrace();
}
/*
* Output will be -
*
* 1 Namit Engineer
* 2 Sharma Developer
*
* */

}

private static void writeExcel(List<String> employees) throws IOException {

/*
* the thumb-rule for any excel operation is work-book > work-sheet >
* row > cell
*/

FileOutputStream fileOutputStream = new FileOutputStream(
"/home/namit/Downloads/writtenExcel.xls");

HSSFWorkbook hssfWorkbook = new HSSFWorkbook();
HSSFSheet hssfSheet = hssfWorkbook.createSheet();

for (int i = 0; i < employees.size(); i++) {
String row1 = employees.get(i);
String[] row1Cells = row1.split(",");

HSSFRow hssfRow = hssfSheet.createRow(i);

for (int j = 0; j < row1Cells.length; j++) {
HSSFCell hssfCell = hssfRow.createCell(j);
hssfCell.setCellValue(row1Cells[j]);
}

}

hssfWorkbook.write(fileOutputStream);
fileOutputStream.close();
hssfWorkbook.close();

}

}






Refer to the comments in the code for some tid-bits, and drop a note for any suggestion or query.

Happy Coding !!

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