iText – JavaでPDFを読み書きする

package com.techfou;

import com.itextpdf.text.** ;
import com.itextpdf.text.pdf.PdfWriter;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

public class PdfWriteExample {

    private static final String FILE__NAME = "/tmp/itext.pdf";

    public static void main(String[]args) {
        writeUsingIText();
    }

    private static void writeUsingIText() {

        Document document = new Document();

        try {

            PdfWriter.getInstance(document, new FileOutputStream(new File(FILE__NAME)));

           //open
            document.open();

            Paragraph p = new Paragraph();
            p.add("This is my paragraph 1");
            p.setAlignment(Element.ALIGN__CENTER);

            document.add(p);

            Paragraph p2 = new Paragraph();
            p2.add("This is my paragraph 2");//no alignment

            document.add(p2);

            Font f = new Font();
            f.setStyle(Font.BOLD);
            f.setSize(8);

            document.add(new Paragraph("This is my paragraph 3", f));

           //close
            document.close();

            System.out.println("Done");

        } catch (FileNotFoundException | DocumentException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }

    }
}

package com.techfou;

import com.itextpdf.text.pdf.PdfReader;
import com.itextpdf.text.pdf.parser.PdfTextExtractor;

import java.io.IOException;

public class PdfReadExample {

    private static final String FILE__NAME = "/tmp/itext.pdf";

    public static void main(String[]args) {

        PdfReader reader;

        try {

            reader = new PdfReader("f:/itext.pdf");

           //pageNumber = 1
            String textFromPage = PdfTextExtractor.getTextFromPage(reader, 1);

            System.out.println(textFromPage);

            reader.close();

        } catch (IOException e) {
            e.printStackTrace();
        }

    }

}

This is my paragraph 1
This is my paragraph 2
This is my paragraph 3