How to read data from excel cell using Apache POI in java

ReadExcelCell.java

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

public class writeexcel {

	public static void main(String[] args) throws IOException 
	{
		//Create an object variable to get the data
		writeexcel t1=new writeexcel();
		//Give the path where your excel file exist
		String path="D:\\Eclipse project 1\\Javacheck\\test.xlsx";
		System.out.println(" The cell value is " +t1.getvalue(0, 20, 0, path));
		
	}
	
	public Cell getvalue(int colno,int rowno,int shtno,String path) throws IOException
	{
	
	FileInputStream file;
	file = new FileInputStream(new File(path));
	XSSFWorkbook wb;
	wb = new XSSFWorkbook(file);
	XSSFSheet sh0=wb.getSheetAt(shtno);
	Cell cell;
	int rn = rowno;
	Row r = wb.getSheetAt(shtno).getRow(rn);
	
	
    if (r == null) 
    {
       // No values exist in this row
       r = wb.getSheetAt(shtno).createRow(rn);
    }
    
    
	cell=sh0.getRow(rowno).getCell(colno);
	if (cell == null || cell.getCellType() == Cell.CELL_TYPE_BLANK || cell.getCellType()==Cell.CELL_TYPE_NUMERIC
			 ||cell.getCellType() == Cell.CELL_TYPE_STRING ||cell.getCellType() == Cell.CELL_TYPE_BOOLEAN )
	{
           // This cell is empty
           if (cell == null)
           { 
              cell = r.createCell(colno, Cell.CELL_TYPE_STRING);
              wb.close();
              return null;
              	
           }
           wb.close();
		return cell;
			
	}
	else
	{
	wb.close();
	return cell;
	}
	}


}