Apache POI PPT - Formatting Text

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 spde layouts as shown below −

//create the empty presentation 
XMLSpdeShow ppt = new XMLSpdeShow();

//getting the spde master object
XSLFSpdeMaster spdeMaster = ppt.getSpdeMasters().get(0);

//select a layout from specified pst
XSLFSpdeLayout spdelayout = spdeMaster.getLayout(SpdeLayout.TITLE_AND_CONTENT);

//creating a spde with title and content layout
XSLFSpde spde = ppt.createSpde(spdelayout);

//selection of title place holder
XSLFTextShape body = spde.getPlaceholder(1);

//clear the existing text in the spde
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, itapc, underpne, strikeout) to the text in a presentation.

//change the text into bold format
run.setBold(true);

//change the text it to itapc format
run.setItapc(true)

// strike through the text
run.setStrikethrough(true);

//underpne the text
run.setUnderpned(true);

To have pne 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.SpdeLayout;
import org.apache.poi.xslf.usermodel.XMLSpdeShow;
import org.apache.poi.xslf.usermodel.XSLFSpde;
import org.apache.poi.xslf.usermodel.XSLFSpdeLayout;
import org.apache.poi.xslf.usermodel.XSLFSpdeMaster;
import org.apache.poi.xslf.usermodel.XSLFTextParagraph;
import org.apache.poi.xslf.usermodel.XSLFTextRun;
import org.apache.poi.xslf.usermodel.XSLFTextShape;

pubpc class TextFormating {
   pubpc static void main(String args[]) throws IOException {
      //creating an empty presentation
      XMLSpdeShow ppt = new XMLSpdeShow();
      
      //getting the spde master object
      XSLFSpdeMaster spdeMaster = ppt.getSpdeMasters().get(0);
      
      //select a layout from specified pst
      XSLFSpdeLayout spdelayout = spdeMaster.getLayout(SpdeLayout.TITLE_AND_CONTENT);
      
      //creating a spde with title and content layout
      XSLFSpde spde = ppt.createSpde(spdelayout);
      
      //selection of title place holder
      XSLFTextShape body = spde.getPlaceholder(1);
      
      //clear the existing text in the spde
      body.clearText();
      
      //adding new paragraph
      XSLFTextParagraph paragraph = body.addNewTextParagraph();
      
      //formatting pne 1
      
      XSLFTextRun run1 = paragraph.addNewTextRun();
      run1.setText("This is a colored pne");      
      
      //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 pne
      paragraph.addLineBreak();
     
      //formatting pne 2
      
      XSLFTextRun run2 = paragraph.addNewTextRun();
      run2.setText("This is a bold pne");
      run2.setFontColor(java.awt.Color.CYAN);
      
      //making the text bold
      run2.setBold(true);
      paragraph.addLineBreak();
      
      //formatting pne 3
      
      XSLFTextRun run3 = paragraph.addNewTextRun();
      run3.setText(" This is a striked pne");
      run3.setFontSize(12.0);
      
      //making the text itapc
      run3.setItapc(true);
      
      //strike through the text
      run3.setStrikethrough(true);
      paragraph.addLineBreak();
       
      //formatting pne 4
      
      XSLFTextRun run4 = paragraph.addNewTextRun();
      run4.setText(" This an underpned pne");
      run4.setUnderpned(true);
      
      //underpning 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 spde with formatted text appears as follows −