Category: apache Poi Ppt

Apache POI PPT – Classes and Methods ”; Previous Next In this chapter, we will learn about a few classes and methods under Apache POI API that are crucial to work on PPT files using Java programs. Presentation To create and manage a presentation, you have a class called XMLSlideShow in the package org.apache.poi.xslf.usermodel. Given below are some important methods and a constructor of this class. Class − XMLSlideShow Package − org.apache.poi.xslf.usermodel S.No Constructor & Description 1 XMLSlideShow(java.io.InputStream inputStream) You can instantiate this class by passing an inputstream class object to it. S.No Methods & Description 1 int addPicture (byte[] pictureData, int format) Using this method, you can add a picture to a presentation. 2 XSLFSlide createSlide() Creates a blank slide in a presentation. 3 XSLFSlide createSlide(XSLFSlideLayout layout) Creates a slide with a given slide layout. 4 java.util.List <XSLFPictureData> getPictureData() Returns an array of all the pictures in a presentation. 5 java.awt.Dimension getPageSize() Using this method, you can get to know the current page size. 6 java.util.List<XSLFSlideMaster> getSlideMasters() Returns the list of all the slides in a presentation. 7 java.util.List<XSLFSlide> getSlides() Returns all the slides in a presentation. 8 XSLFSlide removeSlide(int index) Using this method, you can remove a slide from a presentation. 9 void setPageSize(java.awt.Dimension pgSize) Using this method, you can reset the page size. 10 void setSlideOrder(XSLFSlide slide, int newIndex) Using this method, you can reorder the slides. Slide To create and manage a slide in a presentation, the methods of the XSLFSlide class are used. Some important methods of this class are mentioned below. Class − XSLFSlide Package − org.apache.poi.xslf.usermodel S.No Method & Description 1 XSLFBackground getBackground() Returns the XSLFBackground object which can be used to retrieve details like color and anchor of the background of the slide. You can also draw shapes in the slide using this object. 2 XSLFSlideLayout getSlideLayout() Provides access to the XSLFSlideLayout object of the current slide. 3 XSLFSlideMaster getSlideMaster() Provides access to the slide master of the current slide. 4 XSLFTheme getTheme() Returns the XSLFTheme object of the current slide. 5 java.lang.String getTitle() Returns the title of the current slide. 6 XSLFSlide importContent(XSLFSheet src) Copies the contents of another slide to this slide. Slide Master It is the component of the presentation having different slide layouts. The XSLFSlideMaster class gives you access to it. Mentioned below are some important methods of this class. Class − XSLFSlideMaster Package − org.apache.poi.xslf.usermodel S.No Method & Description 1 XSLFBackground getBackground() Returns the common background of the slide master. 2 XSLFSlideLayout getLayout(SlideLayout type) Returns the XSLFSlideLayout object. 3 java.util.List<XSLFSlideLayout> getSlideLayouts() Returns all the slide layouts in this slide master. Slide Layout The POI library has a class called XSLFSlideLayout, using which you can manage the layouts of a slide. Class − XSLFSlideLayout Package − org.apache.poi.xslf.usermodel S.No Method & Description 1 void copyLayout(XSLFSlide slide) This method will copy the placeholders from this layout to the given slide. Text Paragraph You can write content to the slide using XSLFTextParagraph class. Below mentioned are some important methods of this class. Class − XSLFTextParagraph Package − org.apache.poi.xslf.usermodel S.No Method & Description 1 XSLFTextRun addLineBreak() Inserts a line break in a paragraph. 2 XSLFTextRun addNewTextRun() Adds a new run of text in a paragraph. 3 void setBulletAutoNumber(ListAutoNumber scheme, int startAt) Applies automatic numbered bullet points to the paragraph. 4 void setIndent(double value) Sets the indent to the text in the paragraph. 5 void setLeftMargin(double value) This method is used to add the left margin of the paragraph. 6 void setLineSpacing(double linespacing) This method is used to set line spacing in the paragraph. 7 void setTextAlign(TextAlign align) This method is used to set alignment that is to be set to the paragraph. Text Run This is the lowest level of text separation within a text body. You have XSLFTextRun class to manage the text run of a paragraph. Below mentioned are some important methods of this class. Class − XSLFTextParagraph Package − org.apache.poi.xslf.usermodel S.No Method & Description 1 XSLFHyperlink createHyperlink() Creates a hyperlink in the presentation. 2 XSLFHyperlink getHyperlink() This method is used to get the hyperlink. 3 java.lang.String getText() Returns the value of this Text node as a Java string. 4 void setBold(boolean bold) This method is used to set the text in Bold. 5 void setCharacterSpacing(double spc) Sets the spacing between characters within a text run. 6 void setFontColor(java.awt.Color color) Sets the font color of the text. 7 void setFontSize(double fontSize) Sets the font size of the text. 8 void setItalic(boolean italic) This method is used to make the

Apache POI PPT – Installation ”; Previous Next This chapter takes you through the process of setting up Apache POI on Windows and Linux based systems. Apache POI can be easily installed and integrated with your current Java environment following a few simple steps without any complex setup procedures. User administration is required while installation. System Requirements JDK Java SE 2 JDK 1.5 or above Memory 1 GB RAM (recommended) Disk Space No minimum requirement Operating System Version Windows XP or above, Linux Let us now proceed with the steps to install Apache POI. Step 1 − Verify your Java Installation First of all, you need to have Java Software Development Kit (SDK) installed on your system. To verify this, execute any of the two commands depending on the platform you are working on. If the Java installation has been done properly, then it will display the current version and specification of your Java installation. A sample output is given in the following table. Platform Command Sample Output Windows Open command console and type − >java –version java version “11.0.11” 2021-04-20 LTS Java(TM) SE Runtime Environment 18.9 (build 11.0.11+9-LTS-194) Java HotSpot(TM) 64-Bit Server VM 18.9 (build 11.0.11+9-LTS-194, mixed mode) java version “11.0.11” 2021-04-20 LTS Open JDK Runtime Environment 18.9 (build 11.0.11+9-LTS-194) Open JDK 64-Bit Server VM (build 11.0.11+9-LTS-194, mixed mode) Linux Open command terminal and type − $java –version java version “11.0.11” 2021-04-20 LTS Open JDK Runtime Environment 18.9 (build 11.0.11+9-LTS-194) Open JDK 64-Bit Server VM (build 11.0.11+9-LTS-194, mixed mode) We assume the readers of this tutorial have Java SDK version 11.0.11 installed on their system. In case you do not have Java SDK, download its current version from www.oracle.com/technetwork/java/javase/downloads/index.html and have it installed. Step 2 − Set your Java Environment Set the environment variable JAVA_HOME to point to the base directory location where Java is installed on your machine. For example, Sr.No. Platform & Description 1 Windows Set JAVA_HOME to C:ProgramFilesjavajdk11.0.11 2 Linux Export JAVA_HOME = /usr/local/java-current Append the full path of Java compiler location to the System Path. Sr.No. Platform & Description 1 Windows Append the String “C:Program FilesJavajdk11.0.11bin” to the end of the system variable PATH. 2 Linux Export PATH = $PATH:$JAVA_HOME/bin/ Execute the command java -version from the command prompt as explained above. Step 3 − Install Apache POI Library Download the latest version of Apache POI from https://poi.apache.org/download.html and unzip its contents to a folder from where the required libraries can be linked to your Java program. Let us assume the files are collected in a folder on C drive. Add the complete path of the required jars as shown below to the CLASSPATH. Sr.No. Platform & Description 1 Windows Append the following strings to the end of the user variable CLASSPATH − C:poi-bin-5.1.0poi-5.1.0.jar; C:poi-bin-5.1.0poi-ooxml-5.1.0.jar; C:poi-bin-5.1.0poi-ooxml-full-5.1.0.jar; C:poi-bin-5.1.0libcommons-codec-1.15.jar; C:poi-bin-5.1.0libcommons-collections4-4.4.jar; C:poi-bin-5.1.0libcommons-io-2.11.0.jar; C:poi-bin-5.1.0libcommons-math3-3.6.1.jar; C:poi-bin-5.1.0liblog4j-api-2.14.1.jar; C:poi-bin-5.1.0libSparseBitSet-1.2.jar; Cpoi-bin-5.1.0ooxml-libcommons-compress-1.21.jar Cpoi-bin-5.1.0ooxml-libcommons-logging-1.2.jar Cpoi-bin-5.1.0ooxml-libcurvesapi-1.06.jar Cpoi-bin-5.1.0ooxml-libslf4j-api-1.7.32.jar Cpoi-bin-5.1.0ooxml-libxmlbeans-5.0.2.jar 2 Linux Export CLASSPATH = $CLASSPATH: /usr/share/poi-bin-5.1.0/poi-5.1.0.jar.tar: /usr/share/poi-bin-5.1.0/poi-ooxml-5.1.0.tar: /usr/share/poi-bin-5.1.0/poi-ooxml-full-5.1.0.tar: /usr/share/poi-bin-5.1.0/lib/commons-codec-1.15.jar.tar: /usr/share/poi-bin-5.1.0/lib/commons-collections4-4.4.tar: /usr/share/poi-bin-5.1.0/lib/commons-io-2.11.0.tar: /usr/share/poi-bin-5.1.0/lib/commons-math3-3.6.1.tar: /usr/share/poi-bin-5.1.0/lib/log4j-api-2.14.1.tar: /usr/share/poi-bin-5.1.0/lib/SparseBitSet-1.2.tar: /usr/share/poi-bin-5.1.0/ooxml-lib/commons-compress-1.21.tar: /usr/share/poi-bin-5.1.0/ooxml-lib/commons-logging-1.2.tar: /usr/share/poi-bin-5.1.0/ooxml-lib/curvesapi-1.06.tar: /usr/share/poi-bin-5.1.0/ooxml-lib/slf4j-api-1.7.32.tar: /usr/share/poi-bin-5.1.0/ooxml-lib/xmlbeans-5.0.2.tar: pom.xml Following is the pom.xml file to run the programs in this tutorial. <project xmlns=”http://maven.apache.org/POM/4.0.0″ xmlns:xsi=”http://www.w3.org/2001/XMLSchema-instance” xsi:schemaLocation=”http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd”> <modelVersion>4.0.0</modelVersion> <groupId>ApachePoiPPT</groupId> <artifactId>ApachePoiPPT</artifactId> <version>0.0.1-SNAPSHOT</version> <build> <sourceDirectory>src</sourceDirectory> <plugins> <plugin> <artifactId>maven-compiler-plugin</artifactId> <version>3.8.1</version> <configuration> <source>11</source> <target>11</target> <compilerArgs> <arg>–add-modules</arg> <arg>java.se,java.desktop</arg> </compilerArgs> </configuration> </plugin> </plugins> </build> <dependencies> <dependency> <groupId>org.apache.poi</groupId> <artifactId>poi</artifactId> <version>5.1.0</version> </dependency> <dependency> <groupId>org.apache.poi</groupId> <artifactId>poi-ooxml</artifactId> <version>5.1.0</version> </dependency> </dependencies> </project> Print Page Previous Next Advertisements ”;

Flavors of Java PPT API ”; Previous Next This chapter takes you through some of the flavors of Java PowerPoint API and their features. There are many vendors who provide Java PPT related APIs; some of them are considered in this chapter. Aspose Slides for Java Aspose slides for Java is a purely licensed Java PPT API, developed and distributed by the vendor Aspose. The latest version of this API is 8.1.2, released in July 2014. It is a rich and heavy API (combination of plain Java classes and AWT classes) for designing the PPT component that can read, write, and manage slides. The common uses of this API are as follows − Build dynamic presentations Render and print high-fidelity presentations Generate, edit, convert, and print presentations Apache POI Apache POI is a 100% open source library provided by Apache Software Foundation. Most of the small and medium scale application developers depend heavily on Apache POI (HSLF + XSLF). It supports all the basic features of PPT libraries; however, rendering and text extraction are its main features. Given below is the architecture of Apache POI for PPT. Print Page Previous Next Advertisements ”;

Apache POI PPT – PPT to Image ”; Previous Next You can convert a presentation to an image file. The following program shows how to go about it. import java.awt.Color; import java.awt.Dimension; import java.awt.Graphics2D; import java.awt.geom.Rectangle2D; import java.awt.image.BufferedImage; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.util.List; import org.apache.poi.xslf.usermodel.XMLSlideShow; import org.apache.poi.xslf.usermodel.XSLFSlide; public class PptToImage { public static void main(String args[]) throws IOException { //creating an empty presentation File file=new File(“pptToImage.pptx”); XMLSlideShow ppt = new XMLSlideShow(new FileInputStream(file)); //getting the dimensions and size of the slide Dimension pgsize = ppt.getPageSize(); List<XSLFSlide> slide = ppt.getSlides(); BufferedImage img = null; for (int i = 0; i < slide.size(); i++) { img = new BufferedImage(pgsize.width, pgsize.height,BufferedImage.TYPE_INT_RGB); Graphics2D graphics = img.createGraphics(); //clear the drawing area graphics.setPaint(Color.white); graphics.fill(new Rectangle2D.Float(0, 0, pgsize.width, pgsize.height)); //render slide.get(i).draw(graphics); } //creating an image file as output FileOutputStream out = new FileOutputStream(“ppt_image.png”); javax.imageio.ImageIO.write(img, “png”, out); ppt.write(out); System.out.println(“Image successfully created”); out.close(); } } Save the above Java code as PpttoPNG.java, and then compile and execute it from the command prompt as follows − $javac PpttoPNG.java $java PpttoPNG It will compile and execute to generate the following output − Image created successfully The following snapshot shows the presentation that is given as input − Given below is the snapshot of the image created at the specified location. Print Page Previous Next Advertisements ”;

Apache POI PPT – Presentation ”; Previous Next Generally, we use MS-PowerPoint to create presentations. Now let us see how to create presentations using Java. After completion of this chapter, you will be able to create new MS-PowerPoint presentations and open existing PPTs with your Java program. Creating Empty Presentation To create an empty presentation, you have to instantiate the XMLSlideShow class of the org.poi.xslf.usermodel package − XMLSlideShow ppt = new XMLSlideShow(); Save the changes to a PPT document using the FileOutputStream class − File file = new File(“C://POIPPT//Examples//example1.pptx”); FileOutputStream out = new FileOutputStream(file); ppt.write(out); Given below is the complete program to create a blank MS-PowerPoint presentation. import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import org.apache.poi.xslf.usermodel.XMLSlideShow; public class CreatePresentation { public static void main(String args[]) throws IOException { //creating a new empty slide show XMLSlideShow ppt = new XMLSlideShow(); //creating an FileOutputStream object File file = new File(“example1.pptx”); FileOutputStream out = new FileOutputStream(file); //saving the changes to a file ppt.write(out); System.out.println(“Presentation created successfully”); out.close(); } } Save the above Java code as CreatePresentation.java, and then compile and execute it from the command prompt as follows − $javac CreatePresentation.java $java CreatePresentation If your system environment is configured with the POI library, it will compile and execute to generate a blank PPT file named example1.pptx in your current directory and display the following output on the command prompt − Presentation created successfully The blank PowerPoint document appears as follows − Editing an Existing Presentation To open an existing presentation, instantiate the XMLSlideShow class and pass the FileInputStream object of the file to be edited, as an argument to the XMLSlideShow constructor. File file = new File(“C://POIPPT//Examples//example1.pptx”); FileInputstream inputstream = new FileInputStream(file); XMLSlideShow ppt = new XMLSlideShow(inputstream); You can add slides to a presentation using the createSlide() method of the XMLSlideShow class which is in the org.poi.xslf.usermodel package. XSLFSlide slide1 = ppt.createSlide(); Given below is the complete program to open and add slides to an existing PPT − import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import org.apache.poi.xslf.usermodel.XMLSlideShow; import org.apache.poi.xslf.usermodel.XSLFSlide; public class EditPresentation { public static void main(String ar[]) throws IOException { //opening an existing slide show File file = new File(“example1.pptx”); FileInputStream inputstream = new FileInputStream(file); XMLSlideShow ppt = new XMLSlideShow(inputstream); //adding slides to the slideshow XSLFSlide slide1 = ppt.createSlide(); XSLFSlide slide2 = ppt.createSlide(); //saving the changes FileOutputStream out = new FileOutputStream(file); ppt.write(out); System.out.println(“Presentation edited successfully”); out.close(); } } Save the above Java code as EditPresentation.java, and then compile and execute it from the command prompt as follows − $javac EditPresentation.java $java EditPresentation It will compile and execute to generate the following output − slides successfully added The output PPT document with newly added slides looks as follows − After adding slides to a PPT, you can add, perform, read, and write operations on the slides. Print Page Previous Next Advertisements ”;

Apache POI PPT – Formatting Text ”; Previous Next The text in a presentation can be formatted using the methods of the XSLFTextRun class. For that, you have to create an XSLFTextRun class object by selecting one of the slide layouts as shown below − //create the empty presentation XMLSlideShow ppt = new XMLSlideShow(); //getting the slide master object XSLFSlideMaster slideMaster = ppt.getSlideMasters().get(0); //select a layout from specified list XSLFSlideLayout slidelayout = slideMaster.getLayout(SlideLayout.TITLE_AND_CONTENT); //creating a slide with title and content layout XSLFSlide slide = ppt.createSlide(slidelayout); //selection of title place holder XSLFTextShape body = slide.getPlaceholder(1); //clear the existing text in the slide body.clearText(); //adding new paragraph XSLFTextParagraph paragraph = body.addNewTextParagraph(); //creating text run object XSLFTextRun run = paragraph.addNewTextRun(); You can set the font size of the text in the presentation using setFontSize(). run.setFontColor(java.awt.Color.red); run.setFontSize(24); The following code snippet shows how to apply different formatting styles (bold, italic, underline, strikeout) to the text in a presentation. //change the text into bold format run.setBold(true); //change the text it to italic format run.setItalic(true) // strike through the text run.setStrikethrough(true); //underline the text run.setUnderlined(true); To have line breaks between paragraphs, use addLineBreak() of the XSLFTextParagraph class as shown below − paragraph.addLineBreak(); Given below is the complete program to format the text using all the above methods − import java.io.FileOutputStream; import java.io.IOException; import org.apache.poi.xslf.usermodel.SlideLayout; import org.apache.poi.xslf.usermodel.XMLSlideShow; import org.apache.poi.xslf.usermodel.XSLFSlide; import org.apache.poi.xslf.usermodel.XSLFSlideLayout; import org.apache.poi.xslf.usermodel.XSLFSlideMaster; import org.apache.poi.xslf.usermodel.XSLFTextParagraph; import org.apache.poi.xslf.usermodel.XSLFTextRun; import org.apache.poi.xslf.usermodel.XSLFTextShape; public class TextFormating { public static void main(String args[]) throws IOException { //creating an empty presentation XMLSlideShow ppt = new XMLSlideShow(); //getting the slide master object XSLFSlideMaster slideMaster = ppt.getSlideMasters().get(0); //select a layout from specified list XSLFSlideLayout slidelayout = slideMaster.getLayout(SlideLayout.TITLE_AND_CONTENT); //creating a slide with title and content layout XSLFSlide slide = ppt.createSlide(slidelayout); //selection of title place holder XSLFTextShape body = slide.getPlaceholder(1); //clear the existing text in the slide body.clearText(); //adding new paragraph XSLFTextParagraph paragraph = body.addNewTextParagraph(); //formatting line 1 XSLFTextRun run1 = paragraph.addNewTextRun(); run1.setText(“This is a colored line”); //setting color to the text run1.setFontColor(java.awt.Color.red); //setting font size to the text run1.setFontSize(24.0); //moving to the next line paragraph.addLineBreak(); //formatting line 2 XSLFTextRun run2 = paragraph.addNewTextRun(); run2.setText(“This is a bold line”); run2.setFontColor(java.awt.Color.CYAN); //making the text bold run2.setBold(true); paragraph.addLineBreak(); //formatting line 3 XSLFTextRun run3 = paragraph.addNewTextRun(); run3.setText(” This is a striked line”); run3.setFontSize(12.0); //making the text italic run3.setItalic(true); //strike through the text run3.setStrikethrough(true); paragraph.addLineBreak(); //formatting line 4 XSLFTextRun run4 = paragraph.addNewTextRun(); run4.setText(” This an underlined line”); run4.setUnderlined(true); //underlining the text paragraph.addLineBreak(); //creating a file object File file = new File(“TextFormat.pptx”); FileOutputStream out = new FileOutputStream(file); //saving the changes to a file ppt.write(out); out.close(); } } Save the above code as TextFormating.java, and then compile and execute it from the command prompt as follows − $javac TextFormating.java $java TextFormating It will compile and execute to generate the following output − Formatting completed successfully The slide with formatted text appears as follows − Print Page Previous Next Advertisements ”;

Apache POI PPT – Quick Guide ”; Previous Next Apache POI PPT – Overview Many a time, a software application is required to generate reports in Microsoft Office file format. Sometimes, an application is even expected to receive MS- Office files as input data. Any Java programmer who wants to produce MS Office files as output must use a predefined and read-only API to do so. What is Apache POI? Apache POI is a popular API that allows programmers to create, modify, and display MS-Office files using Java programs. It is an open source library developed and distributed by Apache Software Foundation. It contains classes and methods to decode the user input data, or a file into MS Office documents. Components of Apache POI Apache POI contains classes and methods to work on all OLE2 Compound documents of MS-Office. The list of components of this API is given below − POIFS (Poor Obfuscation Implementation File System) − This component is the basic factor of all other POI elements. It is used to read different files explicitly. HSSF (Horrible SpreadSheet Format) − It is used to read and write .xls format of MS-Excel files. XSSF (XML SpreadSheet Format) − It is used for .xlsx file format of MS-Excel. HPSF (Horrible Property Set Format) − It is used to extract property sets of the MS-Office files. HWPF (Horrible Word Processor Format) − It is used to read and write .doc extension files of MS-Word. XWPF (XML Word Processor Format) − It is used to read and write .docx extension files of MS-Word. HSLF (Horrible Slide Layout Format) − It is used to read, create, and edit PowerPoint presentations. HDGF (Horrible DiaGram Format) − It contains classes and methods for MS-Visio binary files. HPBF (Horrible PuBlisher Format) − It is used to read and write MS-Publisher files. This tutorial guides you through the process of working on Microsoft PowerPoint presentation using Java. Therefore the discussion is confined to XSLF component. Note − Older versions of POI support binary file formats such as doc, xls, ppt, etc. Version 3.5 onwards, POI supports OOXML file formats of MS-Office such as docx, xlsx, pptx, etc. Flavors of Java PPT API This chapter takes you through some of the flavors of Java PowerPoint API and their features. There are many vendors who provide Java PPT related APIs; some of them are considered in this chapter. Aspose Slides for Java Aspose slides for Java is a purely licensed Java PPT API, developed and distributed by the vendor Aspose. The latest version of this API is 8.1.2, released in July 2014. It is a rich and heavy API (combination of plain Java classes and AWT classes) for designing the PPT component that can read, write, and manage slides. The common uses of this API are as follows − Build dynamic presentations Render and print high-fidelity presentations Generate, edit, convert, and print presentations Apache POI Apache POI is a 100% open source library provided by Apache Software Foundation. Most of the small and medium scale application developers depend heavily on Apache POI (HSLF + XSLF). It supports all the basic features of PPT libraries; however, rendering and text extraction are its main features. Given below is the architecture of Apache POI for PPT. Apache POI PPT – Installation This chapter takes you through the process of setting up Apache POI on Windows and Linux based systems. Apache POI can be easily installed and integrated with your current Java environment following a few simple steps without any complex setup procedures. User administration is required while installation. System Requirements JDK Java SE 2 JDK 1.5 or above Memory 1 GB RAM (recommended) Disk Space No minimum requirement Operating System Version Windows XP or above, Linux Let us now proceed with the steps to install Apache POI. Step 1 − Verify your Java Installation First of all, you need to have Java Software Development Kit (SDK) installed on your system. To verify this, execute any of the two commands depending on the platform you are working on. If the Java installation has been done properly, then it will display the current version and specification of your Java installation. A sample output is given in the following table. Platform Command Sample Output Windows Open command console and type − >java –version java version “11.0.11” 2021-04-20 LTS Java(TM) SE Runtime Environment 18.9 (build 11.0.11+9-LTS-194) Java HotSpot(TM) 64-Bit Server VM 18.9 (build 11.0.11+9-LTS-194, mixed mode) java version “11.0.11” 2021-04-20 LTS Open JDK Runtime Environment 18.9 (build 11.0.11+9-LTS-194) Open JDK 64-Bit Server VM (build 11.0.11+9-LTS-194, mixed mode) Linux Open command terminal and type − $java –version java version “11.0.11” 2021-04-20 LTS Open JDK Runtime Environment 18.9 (build 11.0.11+9-LTS-194) Open JDK 64-Bit Server VM (build 11.0.11+9-LTS-194, mixed mode) We assume the readers of this tutorial have Java SDK version 11.0.11 installed on their system. In case you do not have Java SDK, download its current version from www.oracle.com/technetwork/java/javase/downloads/index.html and have it installed. Step 2 − Set your Java Environment Set the environment variable JAVA_HOME to point to the base directory location where Java is installed on your machine. For example, Sr.No. Platform & Description 1 Windows Set JAVA_HOME to C:ProgramFilesjavajdk11.0.11 2 Linux Export JAVA_HOME = /usr/local/java-current Append the full path of Java compiler location to the System Path. Sr.No. Platform

Apache POI PPT – Useful Resources ”; Previous Next The following resources contain additional information on Apache POI PPT. Please use them to get more in-depth knowledge on this. Useful Video Courses Apache Spark Online Training Course 47 Lectures 3.5 hours Tutorialspoint More Detail Delta Lake with Apache Spark using Scala 53 Lectures 2 hours Bigdata Engineer More Detail Apache Spark with Scala for Certified Databricks Professional 78 Lectures 5.5 hours Bigdata Engineer More Detail Apache Cassandra for Beginners 28 Lectures 2 hours Navdeep Kaur More Detail NGINX, Apache, SSL Encryption – Training Course 60 Lectures 3.5 hours YouAccel More Detail Learn Advanced Apache Kafka from Scratch Featured 154 Lectures 9 hours Learnkart Technology Pvt Ltd More Detail Print Page Previous Next Advertisements ”;

Apache POI PPT – Overview ”; Previous Next Many a time, a software application is required to generate reports in Microsoft Office file format. Sometimes, an application is even expected to receive MS- Office files as input data. Any Java programmer who wants to produce MS Office files as output must use a predefined and read-only API to do so. What is Apache POI? Apache POI is a popular API that allows programmers to create, modify, and display MS-Office files using Java programs. It is an open source library developed and distributed by Apache Software Foundation. It contains classes and methods to decode the user input data, or a file into MS Office documents. Components of Apache POI Apache POI contains classes and methods to work on all OLE2 Compound documents of MS-Office. The list of components of this API is given below − POIFS (Poor Obfuscation Implementation File System) − This component is the basic factor of all other POI elements. It is used to read different files explicitly. HSSF (Horrible SpreadSheet Format) − It is used to read and write .xls format of MS-Excel files. XSSF (XML SpreadSheet Format) − It is used for .xlsx file format of MS-Excel. HPSF (Horrible Property Set Format) − It is used to extract property sets of the MS-Office files. HWPF (Horrible Word Processor Format) − It is used to read and write .doc extension files of MS-Word. XWPF (XML Word Processor Format) − It is used to read and write .docx extension files of MS-Word. HSLF (Horrible Slide Layout Format) − It is used to read, create, and edit PowerPoint presentations. HDGF (Horrible DiaGram Format) − It contains classes and methods for MS-Visio binary files. HPBF (Horrible PuBlisher Format) − It is used to read and write MS-Publisher files. This tutorial guides you through the process of working on Microsoft PowerPoint presentation using Java. Therefore the discussion is confined to XSLF component. Note − Older versions of POI support binary file formats such as doc, xls, ppt, etc. Version 3.5 onwards, POI supports OOXML file formats of MS-Office such as docx, xlsx, pptx, etc. Print Page Previous Next Advertisements ”;

Apache POI PPT – Merging ”; Previous Next You can merge multiple presentations using the importContent() method of the XMLSlideShow class. Given below is the complete program to merge two presentations − import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import org.apache.poi.xslf.usermodel.XMLSlideShow; import org.apache.poi.xslf.usermodel.XSLFSlide; public class MergingMultiplePresentations { public static void main(String args[]) throws IOException { //creating empty presentation XMLSlideShow ppt = new XMLSlideShow(); //taking the two presentations that are to be merged String file1 = “presentation1.pptx”; String file2 = “presentation2.pptx”; String[] inputs = {file1, file2}; for(String arg : inputs){ FileInputStream inputstream = new FileInputStream(arg); XMLSlideShow src = new XMLSlideShow(inputstream); for(XSLFSlide srcSlide : src.getSlides()) { //merging the contents ppt.createSlide().importContent(srcSlide); } } String file3 = “combinedpresentation.pptx”; //creating the file object FileOutputStream out = new FileOutputStream(file3); // saving the changes to a file ppt.write(out); System.out.println(“Merging done successfully”); out.close(); } } Save the above code as MergingMultiplePresentations.java, and then compile and execute it from the command prompt as follows − $javac MergingMultiplePresentations.java $java MergingMultiplePresentations It will compile and execute to generate the following output − Merging done successfully The following snapshot shows the first presentation − The following snapshot shows the second presentation − Given below is the output of the program after merging the two slides. Here you can see the content of the earlier slides merged together. Print Page Previous Next Advertisements ”;