Formatting and Justify Paragraphs in Apache POI

[Anirudh Singh Gaur <gr...@gmail.com>]

I'm trying to generate a .docx file and need help in some things: -

1. How to get "Justify" alignment for paragraphs (there are options like
BOTH, DISTRIBUTED etc).

2. I need some bold words in between the normal words in a paragraph. How
to achieve this? (I'm trying to create two different "XWPFRun" but its not
working, they are not appearing in the sequence in which I want..)

Re: Formatting and Justify Paragraphs in Apache POI

[Mark Beardsley <ma...@tiscali.co.uk>]

It is easier than you may think. Have a look at this;

import java.io.*;
import org.apache.poi.xwpf.usermodel.*;

/**
 *
 * @author ubuntu
 */
public class DocxTest {
    
    private static final String paraOneText = "Design patterns have become a
"
            + "staple of object oriented design and programming by providing
"
            + "elegant, easy-to-reuse and maintainable solutions to commonly
"
            + "encountered programming challenges. However, many busy Java "
            + "programmers have yet to learn about design patterns and "
            + "incorporate this powerful technology into their work.";
    
    private static final String p2PartOneText = "Java Design Patterns is "
            + "exactly the tutorial resource you need. Gentle and clearly "
            + "written, it helps you ";
    private static final String p2PartTwoText = "understand";
    private static final String p2PartThreeText = " the nature and purpose
of "
            + "design patterns. It also serves as a practical guide to using
"
            + "design patterns to create sophisticated, robust Java
programs.";
    
    public DocxTest(String filename) throws IOException {
        File file = null;
        FileOutputStream fos = null;
        XWPFDocument document = null;
        XWPFParagraph para = null;
        XWPFRun run = null;
        try {
            // Create the first paragraph and set it's text.
            document = new XWPFDocument();
            para = document.createParagraph();
            
            // Set the alignement of the paragraph. The ParagraphAlignment
class
            // defines a number of values - as an Enumeration - that allow
you to
            // set the alignment to, amongst others, left, right, center and
            // distributed.
            para.setAlignment(ParagraphAlignment.CENTER);
            // Show a blank line after the paragrph. The value of 100 was
chosen
            // arbirtarily.
            para.setSpacingAfter(100);
            // Set the text of the paragrph by creating a single run. Just a
single
            // run is needed here as the format of all of the text in the
            // paragrph is the same.
            run = para.createRun();
            run.setText(DocxTest.paraOneText);
            
            // Paragraph two is slightly different; it will have a single
word
            // set to bold, italicised.
            para = document.createParagraph();
            // Create the first run and set it's text.
            run = para.createRun();
            run.setText(DocxTest.p2PartOneText);
            // Create the second run, set it's text and make sure it is
shown
            // in a bold, italicised font.
            run = para.createRun();
            run.setText(DocxTest.p2PartTwoText);
            run.setBold(true);
            run.setItalic(true);
            // Create the final run for the second paragraph. This will not
            // be emboldened or italicised.
            run = para.createRun();
            run.setText(DocxTest.p2PartThreeText);
            
            // Write the document away.
            file = new File(filename);
            fos = new FileOutputStream(file);
            document.write(fos);
        }
        finally {
            if(fos != null) {
                fos.close();
                fos = null;
            }
        }
    }
}

You can see that there is a setAlignment() method for the paragraph and all
you need do is call this and pass the appropriate value from the
ParagraphAlignment enumeration.

Each time you wish to see a different font or treatment in a paragraph,
create a run for it ans set the various attributes of the run to get the
appearance you are after.

Yours

Mark B



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