Presentation ppt = new Presentation();
ppt.loadFromFile(inputFile);
String text = "create, read";
PortionEx textRange=ppt.getSlides().get(0).FindFirstTextAsRange(text);
textRange.getFill().setFillType(FillFormatType.SOLID);
textRange.getFill().getSolidColor().setColor(Color.red);
textRange.setFontHeight(28);
textRange.setLatinFont(new TextFont("Arial"));
textRange.isBold(TriState.TRUE);
textRange.isItalic(TriState.TRUE);
textRange.setTextUnderlineType(TextUnderlineType.DOUBLE);
textRange.setTextStrikethroughType(TextStrikethroughType.SINGLE);
ppt.saveToFile(outputFile, FileFormat.PPTX_2016);
ppt.dispose();

ArrayList embedFonts = ppt.getEmbedFonts();

Presentation ppt = new Presentation();
// Load a PowerPoint presentation from the specified file.
ppt.loadFromFile(inputFile);
// Create a new object to store the default text range formatting properties.
PortionFormatEx format = new PortionFormatEx();
// Set the IsBold property of the text range formatting to true, making the text bold.
format.isBold(TriState.TRUE);
// Set the FillType property of the text range fill to Solid, indicating a solid fill color.
format.getFill().setFillType(FillFormatType.SOLID);
// Set the Color property of the solid fill color to red.
format.getFill().getSolidColor().setColor(Color.red);
// Set the FontHeight property of the text range formatting to 25, indicating the font size.
format.setFontHeight(25);
format.isBold(TriState.TRUE);

// Replace all occurrences of the text "Spire.Presentation for .NET" with "Spire.PPT" and apply the specified formatting.
ppt.ReplaceAndFormatText("Spire.Presentation for .NET", "Spire.PPT", format);

// Save the modified presentation to the specified output file in the PPTX format compatible with PowerPoint 2016.
ppt.saveToFile(outputFile, FileFormat.PPTX_2016);
// Dispose of the Presentation object to free up resources
ppt.dispose();

Presentation ppt = new Presentation();
ISlide slide = ppt.getSlides().get(0);
IAutoShape shape = ppt.getSlides().get(0).getShapes().appendShape(ShapeType.RECTANGLE, new Rectangle2D.Double(100, 250, 350, 200));
ppt.getSlides().get(0).getShapes().get(0).getLine().
getFillFormat().getSolidFillColor().setColor(Color.white);
shape.getFill().setFillType(FillFormatType.SOLID);
shape.getFill().getSolidColor().setColor(Color.GRAY);
ParagraphEx paragraphEx = shape.getTextFrame().getTextRange().getParagraph();
PortionEx ex = new PortionEx("TextTextmdTextText\ttmdTextTextmdText\ttmdTextTextmdtEXT\ttTextmd");
paragraphEx.getTextRanges().append(ex);
ICommentAuthor commentAuthor = ppt.getCommentAuthors().addAuthor("test","12");
paragraphEx.addComment(commentAuthor,slide,shape,ex,"123");
String result = "result.pptx";
ppt.saveToFile(result, FileFormat.PPTX_2013);

Presentation ppt = new Presentation();
ppt.loadFromFile(inputFile);
ISlide slide = ppt.getSlides().get(0);
IAutoShape shape = (IAutoShape) slide.getShapes().get(0);
ParagraphEx paragraphEx = shape.getTextFrame().getTextRange().getParagraph();
PortionEx portionEx = paragraphEx.getTextRanges().get(0);
ICommentAuthor commentAuthor = ppt.getCommentAuthors().addAuthor("test","18");
paragraphEx.addComment(commentAuthor,slide,shape,portionEx,"123456789");
String result = "result.pptx";
ppt.saveToFile(result, FileFormat.PPTX_2013);

Presentation ppt = new Presentation();
String latexMathCode="x^{2}+\\sqrt{x^{2}+1=2}";
IAutoShape shape=ppt.getSlides().get(0).getShapes().appendShape(ShapeType.RECTANGLE,new Rectangle2D.Float(30,100,400,200));
shape.getTextFrame().getParagraphs().clear();

ParagraphEx p=new ParagraphEx();
shape.getTextFrame().getParagraphs().append(p);

PortionEx portionEx=new PortionEx("Test");
p.getTextRanges().append(portionEx);
p.appendFromLatexMathCode(latexMathCode);
PortionEx portionEx2=new PortionEx("Hello");
p.getTextRanges().append(portionEx2);
ppt.saveToFile(outputFile, FileFormat.AUTO);

Presentation ppt = new Presentation();
ppt.loadFromFile("input.pptx");
IAutoShape shape = (IAutoShape)ppt.getSlides().get(0).getShapes().get(0);
System.out.println(shape.getDisplayFill().getFillType().getName());
System.out.println(shape.getDisplayFill().getSolidColor().getColor());