Report.java

package compareAlgorithm;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Date;

import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Paragraph;
import com.itextpdf.text.pdf.PdfWriter;

/**
 * Class for handling the report
 * 
 * @author Shoeb Shaikh
 * 
 */
public class Report {

	private String reportFile = ""; // Absolute file name for report
	OutputStream file; // Stream for writing results
	Document document; // associated pdf document

	/**
	 * Constructor.
	 * 
	 * @param report
	 *            a file path to store report.
	 */
	public Report(String report) {
		// initialize/open pdf code
		try {
			// Create Directory
			new File(new File(report).getParent().toString()).mkdirs();
			// Create file for generating report
			file = new FileOutputStream(new File(report));
			document = new Document();
			// instance for pdf writer
			PdfWriter.getInstance(document, file);
			document.open();
			// Writing headers
			document.add(new Paragraph("COMPARISON REPORT"));
			document.add(new Paragraph(new Date().toString()));
			document.add(new Paragraph("\n"));
		} catch (DocumentException | FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

	/**
	 * To add which routine is been called
	 * 
	 * @param routine
	 */
	public void startRoutine(String routine) {
		addToReport("Performing comparison of " + routine + "!");
	}

	/**
	 * Marking end of routine
	 * 
	 * @param routine
	 */
	public void terminateRoutine(String routine) {
		addToReport(routine + " comparison complete!");
	}

	/**
	 * Adding the results to pdf file
	 * 
	 * @param report
	 */
	public void addToReport(String report) {
		try {
			document.add(new Paragraph(report + "\n"));
		} catch (DocumentException e) {
			e.printStackTrace();
		}

	}
	

	/**
	 * Closing the file
	 */
	public void finalize() {
		document.close();
		try {
			file.close();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
}