PowerPoint files, from Java.

import com.aspose.slides.Presentation;
import com.aspose.slides.SaveFormat;

public class ConvertPresentation {
    public static void main(String[] args) {
        Presentation presentation = new Presentation("quarterly-review.pptx");
        try {
            presentation.save("quarterly-review.pdf", SaveFormat.Pdf);
            presentation.save("quarterly-review.html", SaveFormat.Html);
            presentation.save("quarterly-review.tiff", SaveFormat.Tiff);
        } finally {
            presentation.dispose();
        }
    }
}

import com.aspose.slides.IImage;
import com.aspose.slides.ISlide;
import com.aspose.slides.ImageFormat;
import com.aspose.slides.Presentation;

import java.awt.Dimension;

public class SlideThumbnails {
    public static void main(String[] args) {
        Presentation presentation = new Presentation("quarterly-review.pptx");
        try {
            Dimension size = new Dimension(1280, 720);
            for (int i = 0; i < presentation.getSlides().size(); i++) {
                ISlide slide = presentation.getSlides().get_Item(i);
                IImage image = slide.getImage(size);
                try {
                    image.save("slide-" + (i + 1) + ".png", ImageFormat.Png);
                } finally {
                    image.dispose();
                }
            }
        } finally {
            presentation.dispose();
        }
    }
}

import com.aspose.slides.ChartType;
import com.aspose.slides.IChart;
import com.aspose.slides.IChartDataWorkbook;
import com.aspose.slides.IChartSeries;
import com.aspose.slides.ISlide;
import com.aspose.slides.Presentation;
import com.aspose.slides.SaveFormat;

public class ChartFromData {
    public static void main(String[] args) {
        String[] quarters = { "Q1", "Q2", "Q3", "Q4" };
        double[] revenue = { 18.4, 21.9, 20.1, 26.7 };

        Presentation presentation = new Presentation();
        try {
            ISlide slide = presentation.getSlides().get_Item(0);
            IChart chart = slide.getShapes().addChart(ChartType.ClusteredColumn, 40, 40, 620, 400);

            IChartDataWorkbook book = chart.getChartData().getChartDataWorkbook();
            chart.getChartData().getSeries().clear();
            chart.getChartData().getCategories().clear();

            chart.getChartData().getSeries().add(book.getCell(0, 0, 1, "Revenue"), chart.getType());
            IChartSeries series = chart.getChartData().getSeries().get_Item(0);

            for (int i = 0; i < quarters.length; i++) {
                chart.getChartData().getCategories().add(book.getCell(0, i + 1, 0, quarters[i]));
                series.getDataPoints().addDataPointForBarSeries(book.getCell(0, i + 1, 1, revenue[i]));
            }

            series.getLabels().getDefaultDataLabelFormat().setShowValue(true);

            presentation.save("revenue.pptx", SaveFormat.Pptx);
        } finally {
            presentation.dispose();
        }
    }
}

import com.aspose.slides.LoadOptions;
import com.aspose.slides.Presentation;
import com.aspose.slides.SaveFormat;

public class ProtectPresentation {
    public static void main(String[] args) {
        Presentation presentation = new Presentation("quarterly-review.pptx");
        try {
            presentation.getProtectionManager().setWriteProtection("do-not-edit");
            presentation.getProtectionManager().encrypt("open-sesame");
            presentation.save("quarterly-review-protected.pptx", SaveFormat.Pptx);
        } finally {
            presentation.dispose();
        }

        LoadOptions options = new LoadOptions();
        options.setPassword("open-sesame");

        Presentation reopened = new Presentation("quarterly-review-protected.pptx", options);
        try {
            System.out.println("Encrypted: " + reopened.getProtectionManager().isEncrypted());
            System.out.println("Write protected: " + reopened.getProtectionManager().isWriteProtected());
        } finally {
            reopened.dispose();
        }
    }
}

import com.aspose.slides.ISlide;
import com.aspose.slides.Presentation;
import com.aspose.slides.SaveFormat;

public class MergePresentations {
    public static void main(String[] args) {
        String[] sources = { "results.pptx", "appendix.pptx" };

        Presentation merged = new Presentation("intro.pptx");
        try {
            for (String path : sources) {
                Presentation source = new Presentation(path);
                try {
                    for (ISlide slide : source.getSlides()) {
                        merged.getSlides().addClone(slide);
                    }
                } finally {
                    source.dispose();
                }
            }

            merged.save("deck.pptx", SaveFormat.Pptx);
        } finally {
            merged.dispose();
        }
    }
}