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Write Excel with Java (Jexcel-api)

Write Excel with Java (Jexcel-api)

 
This article demonstrate how to create Excel files with the Java Excel API.
 
ExcelApi – one of a number of open-source java Excel API, designed for reading, writing, and editing of dynamic excel. Among its features are:

  • Reading from the book Excel 95, 97, 2000, XP, and 2003
  • Reading and writing formulas
  • Creating a list in Excel 2000
  • Support for formatting fonts, numbers and dates
  • Support colors, borders, and colors of cells
  • Changing existing books excel
  • Localization support
  • Copying charts
  • Copying and pasting drawings
  • Logging events

 

dwd2
Download – Java Excel library

 

package com.simplecode.writer;

import java.io.File;
import java.io.IOException;
import java.util.Locale;

import jxl.CellView;
import jxl.Workbook;
import jxl.WorkbookSettings;
import jxl.format.UnderlineStyle;
import jxl.write.Formula;
import jxl.write.Label;
import jxl.write.Number;
import jxl.write.WritableCellFormat;
import jxl.write.WritableFont;
import jxl.write.WritableSheet;
import jxl.write.WritableWorkbook;
import jxl.write.WriteException;
import jxl.write.biff.RowsExceededException;

public class WriteExcel {

	public static void main(String[] args) throws WriteException, IOException {
		WriteExcel test = new WriteExcel();
		test.setOutputFile("c:\temp\input.xls");
		test.write();
		System.out.println("Please check the result file under c:\temp\input.xls ");
	}

	private WritableCellFormat timesBoldUnderline;
	private WritableCellFormat times;
	private String inputFile;

	public void setOutputFile(String inputFile) {
		this.inputFile = inputFile;
	}

	public void write() throws IOException, WriteException {
		File file = new File(inputFile);
		WorkbookSettings wbSettings = new WorkbookSettings();

		wbSettings.setLocale(new Locale("en", "EN"));

		WritableWorkbook workbook = Workbook.createWorkbook(file, wbSettings);
		workbook.createSheet("Report", 0);
		WritableSheet excelSheet = workbook.getSheet(0);
		createLabel(excelSheet);
		createContent(excelSheet);

		workbook.write();
		workbook.close();
	}

	private void createLabel(WritableSheet sheet) throws WriteException {
		// Lets create a times font
		WritableFont times10pt = new WritableFont(WritableFont.TIMES, 10);
		// Define the cell format
		times = new WritableCellFormat(times10pt);
		// Lets automatically wrap the cells
		times.setWrap(true);

		// Create create a bold font with under lines
		WritableFont times10ptBoldUnderline = new WritableFont(
				WritableFont.TIMES, 10, WritableFont.BOLD, false,
				UnderlineStyle.SINGLE);
		timesBoldUnderline = new WritableCellFormat(times10ptBoldUnderline);
		// Lets automatically wrap the cells
		timesBoldUnderline.setWrap(true);

		CellView cv = new CellView();
		cv.setFormat(times);
		cv.setFormat(timesBoldUnderline);
		cv.setAutosize(true);

		// Write a few headers
		addCaption(sheet, 0, 0, "Header 1");
		addCaption(sheet, 1, 0, "This is another header");

	}

	private void createContent(WritableSheet sheet) throws WriteException,
			RowsExceededException {
		// Write a few number
		for (int i = 1; i < 10; i++) {
			// First column
			addNumber(sheet, 0, i, i + 10);
			// Second column
			addNumber(sheet, 1, i, i * i);
		}
		// Lets calculate the sum of it
		StringBuffer buf = new StringBuffer();
		buf.append("SUM(A2:A10)");
		Formula f = new Formula(0, 10, buf.toString());
		sheet.addCell(f);
		buf = new StringBuffer();
		buf.append("SUM(B2:B10)");
		f = new Formula(1, 10, buf.toString());
		sheet.addCell(f);

		// Now a bit of text
		for (int i = 12; i < 20; i++) {
			// First column
			addLabel(sheet, 0, i, "Boring text " + i);
			// Second column
			addLabel(sheet, 1, i, "Another text");
		}
	}

	private void addCaption(WritableSheet sheet, int column, int row, String s)
			throws RowsExceededException, WriteException {
		Label label;
		label = new Label(column, row, s, timesBoldUnderline);
		sheet.addCell(label);
	}

	private void addNumber(WritableSheet sheet, int column, int row,
			Integer integer) throws WriteException, RowsExceededException {
		Number number;
		number = new Number(column, row, integer, times);
		sheet.addCell(number);
	}

	private void addLabel(WritableSheet sheet, int column, int row, String s)
			throws WriteException, RowsExceededException {
		Label label;
		label = new Label(column, row, s, times);
		sheet.addCell(label);
	}
}

 
In our next article we will learn to Read Excel file in Java using Jexcel-api
 

About Mohaideen Jamil


I'm a Full stack developer of IT exp in J2EE, AngularJs, MicroServices, Docker, Spring (Boot, MVC, Cloud), Bluemix, DevOps. Follow me on Facebook or Google Plus. If you like my tutorials, consider making a donation to this charity, thanks.

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