EasyXLS

How to create conditional formatting in Java

EasyXLS Excel library can be used to export Excel files in Java. The library works with any Java SE application and without MS Excel installed.

Step 1: Download and install EasyXLS Excel Library for Java

To download the trial version of EasyXLS Excel Library, press the below button:

Download EasyXLS™ Excel Library for Java

If you already own a license key, you may login and download EasyXLS from your account.

Step 2: Create a Java project

If don't have a project already, create a new Java project.

Step 3: Include EasyXLS library into project

EasyXLS.jar must be added to external libraries into your project for Eclipse or to your application CLASSPATH. EasyXLS.jar can be found after installing EasyXLS, in "Lib" folder.

Add EasyXLS library to CLASSPATH

Step 4: Run Java code that creates conditional formatting in Excel cells

Execute the following Java code that exports an Excel file and sets conditional formatting to a range. The first step is to set the range where the conditional formatting will be applied, then set the formatting options.

package testexceljava;

import java.awt.Color;
import EasyXLS.*;
import EasyXLS.Constants.*;

/* ----------------------------------------------------------
 | Tutorial 14
 | 
 | This tutorial shows how to create an Excel file in Java
 | having a sheet and conditional formatting for cell ranges.
 * ------------------------------------------------------- */

public class Tutorial14 {

    public static void main(String[] args) {
        try {
            System.out.println("Tutorial 14");
            System.out.println("----------");

            // Create an instance of the class that exports Excel files having one sheet
            ExcelDocument workbook = new ExcelDocument(1);

            // Get the table of data for the first worksheet
            ExcelWorksheet xlsTab = ((ExcelWorksheet)workbook.easy_getSheet("Sheet1"));
            ExcelTable xlsTable = xlsTab.easy_getExcelTable();

            // Add data in cells
            for (int i=0;i<6;i++)
            {
                for (int j=0;j<4;j++)
                {
                    if((i<2)&&(j<2))
                        xlsTable.easy_getCell(i, j).setValue("12");
                    else
                        if((j==2)&&(i<2))
                            xlsTable.easy_getCell(i, j).setValue("1000");
                        else
                            xlsTable.easy_getCell(i, j).setValue("9");
                    xlsTable.easy_getCell(i, j).setDataType(DataType.NUMERIC);
                }
            }

            // Set conditional formatting
            xlsTab.easy_addConditionalFormatting("A1:C3", ConditionalFormatting.OPERATOR_BETWEEN,
                                                          "=9", "=11", true, true, Color.RED);

            // Set another conditional formatting
            xlsTab.easy_addConditionalFormatting("A6:C6", ConditionalFormatting.OPERATOR_BETWEEN,
                                                          "=COS(PI())+2", "", Color.ORANGE);
            xlsTab.easy_getConditionalFormattingAt("A6:C6").getConditionAt(0).setConditionType(
                                          ConditionalFormatting.CONDITIONAL_FORMATTING_TYPE_EVALUATE_FORMULA);

            // Export Excel file
            System.out.println("Writing file: C:\\Samples\\Tutorial14 - conditional formatting in Excel.xlsx");
            workbook.easy_WriteXLSXFile("C:\\Samples\\Tutorial14 - conditional formatting in Excel.xlsx");

            // Confirm export of Excel file
            if (workbook.easy_getError().equals(""))
                System.out.println("File successfully created.");
            else
                System.out.println("Error encountered: " + workbook.easy_getError());

            // Dispose memory
            workbook.Dispose();
        }
        catch (Exception ex) {
            ex.printStackTrace();
        }
    }
}

EasyXLS Excel libraries:

Java
Excel Library for Java
full Java version to import, export or convert Excel files
Excel Writer for Java
Java version to create and export Excel files
Download EasyXLS™ Excel Library for Java

File formats:

MS Excel 97 - 2003
MS Excel 2007 - 2019
MS Excel 2021
Office 365
XLSXXLSMXLSBXLS
XMLHTMLCSVTXT