Format Text in Document

Apache POI WP

// Create a new document from scratch
XWPFDocument doc = new XWPFDocument();

// create paragraph
XWPFParagraph para = doc.createParagraph();

// create a run to contain the content
XWPFRun rh = para.createRun();

// Format as desired
rh.setFontSize(15);
rh.setFontFamily("Verdana");
rh.setText("This is the formatted Text");
rh.setColor("fff000");
para.setAlignment(ParagraphAlignment.RIGHT);

Aspose.Words

Document doc = new Document();
DocumentBuilder builder = new DocumentBuilder(doc);

// Set paragraph formatting properties
ParagraphFormat paragraphFormat = builder.getParagraphFormat();
paragraphFormat.setAlignment(ParagraphAlignment.CENTER);
paragraphFormat.setLeftIndent(50);
paragraphFormat.setRightIndent(50);
paragraphFormat.setSpaceAfter(25);

// Output text
builder.writeln("I'm a very nice formatted paragraph. I'm intended to demonstrate how the left and right indents affect word wrapping.");

// Set font formatting properties
Font font = builder.getFont();
font.setBold(true);
font.setColor(Color.BLUE);
font.setItalic(true);
font.setName("Arial");
font.setSize(24);
font.setSpacing(5);
font.setUnderline(Underline.DOUBLE);

// Output formatted text
builder.writeln("I'm a very nice formatted string.");

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Many more examples are available at Aspose Docs