You can download the jar file from here. http://poi.apache.org/
Here is the simple java code to read Excel file.
Include these jar files in the classpath.
01.poi-3.7-20101029.jar02.poi-ooxml-3.7-20101029.jar03.poi-ooxml-schemas-3.7-20101029.jar04.xbean.jar05.dom4j-1.6.1.jar
package com.excel;
import java.io.FileInputStream;
import java.io.InputStream;
import java.util.Iterator;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.ss.usermodel.WorkbookFactory;
public class ReadExcel {
public static void main (String[] args) throws Exception {
InputStream is = new FileInputStream("C:/workbook.xlsx");
Workbook wb = WorkbookFactory.create(is);
Sheet sheet = wb.getSheetAt(0);
Iterator rowIterator = sheet.rowIterator();
while (rowIterator.hasNext()) {
Row row = rowIterator.next();
Iterator cellIterator = row.cellIterator();
while (cellIterator.hasNext()) {
Cell cell = cellIterator.next();
System.out.print(cell.getStringCellValue());
System.out.print(" : ");
}
System.out.println();
}
}
}
Input Excel file.

Output of the program.