Java tutorial
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package com.cdf.objects; import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.util.Map; 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; import org.apache.poi.poifs.filesystem.POIFSFileSystem; /** * * @author compu */ public class ExcelData { private Map<String, Candidate> candidates; // private ArrayList<Candidate> candidates; public ExcelData() { // candidates = new HashMap(); } public void loadData(File file) throws IOException { POIFSFileSystem fs = new POIFSFileSystem(new FileInputStream(file)); HSSFWorkbook wb = new HSSFWorkbook(fs); HSSFSheet sheet = wb.getSheetAt(0); HSSFRow row; HSSFCell cell; int rows; // No of rows rows = sheet.getPhysicalNumberOfRows(); int cols = 0; // No of columns int physicalCellCount; // This trick ensures that we get the data properly even if it doesn't start from first few rows for (int i = 0; i < 10 || i < rows; i++) { row = sheet.getRow(i); if (row != null) { physicalCellCount = sheet.getRow(i).getPhysicalNumberOfCells(); if (physicalCellCount > cols) { cols = physicalCellCount; } } } System.out.println("Row count : " + rows); System.out.println("Coloumn count: " + cols); } public int searchDatabase(String input) { int index = -1; candidates.entrySet().stream().forEach((entry) -> { String key = entry.getKey(); Object value = entry.getValue(); System.out.println("key: " + key + ", Value : " + String.valueOf(value)); }); return index; } }