presentation for java

Chapter 01: �Introduction to Java

Lecturer: Mr. Sam Vanthath

• To understand the relationship between Java and World Wide Web.
• To know Java’s advantages.
• To distinguish the terms API, IDE and JDK.
• To write a simple Java program.
• To create, compile and run Java programs.
• To know the basic syntax of a Java program.
• To display output on the console and on the dialog box.

1. Java, World Wide Web, and Beyond

2. Characteristics of Java

3. The Java Language Specification, API, JDK, and IDE

4. A Simple Java Program

5. Creating, Compiling, and Executing a Java Program

6. Anatomy of the Java Program

• How to write Java application
• Input and Output statements

1. Java, World Wide Web, and Beyond (P. 13)

• Today Java is used for:
• Web Programming
• Developing standalone applications across platforms on
• and mobile devices
• Developing the code to communicate with and control the robotic rover that rolled on Mars.

2. Characteristics of Java (P. 16)

• Java particular feature is to write a program once and run it everywhere.
• Object-oriented

Distributed

Interpreted

• Architecture-neutral
• High-performance

Multithreaded

• Easier than C++
• Replace multiple inheritance in C++ with a simple language construct called an interface
• Eliminate pointers
• Use automatic memory allocation and garbage collection
• Easy to write and read

Object-Oriented

• Replace traditional procedure programming techniques.
• OOP models the real world in terms of objects.
• Central issue in software development is how to reuse code.
• OOP provides great flexibility, modularity, clarity and reusability through encapsulation, inheritance, and polymorphism.
• Several computers working together on a network.
• Java is designed to make distributed computing easy.
• Writing network programs in Java is like sending and receiving data to and from a file.
• Unlike conventional language translators
• Compiler converts source code into a machine-independent format (Byte code)
• allow it to run on any computer H/W that has the Java runtime system (Java Virtual Machine)
• Means reliable.
• Java has a runtime exception-handling feature.
• Java forces the programmer to write the code to deal with exceptions.
• Java can catch and respond to an exceptional situation
• so the program can continue its normal execution
• and terminate gracefully when a runtime error occurs.
• As an Internet programming language, Java is used in a networked and distributed environment.
• If you download a Java applet and run it on your computer, it will not damage your system.

Architecture-Neutral

• As Java is interpreted, this feature enables Java to be architecture-neutral or platform-independent.
• Using Java, developers need to write only one version of software so it can run on every platform (Windows, OS/2, Macintosh, and various UNIX, IBM AS/400, and IBM mainframes).
• Because Java is architecture-neutral, Java programs are portable.
• They can be run on any platform without being recompiled.

Performance

• Design well to perform on very low-power CPUs
• Easy to translate directly to native machine code
• Multithreading is a program’s capability to perform several tasks simultaneously (e.g: Downloading a video file while playing the video).
• Multithreading is particularly useful in GUI programming (e.g: a user can listen to an audio recording while surfing the Web page) and network programming (e.g: A server can serve multiple clients at the same time).
• Libraries can freely add new methods and instance variables.
• New class can be loaded on the fly without recompilation.

3. The Java Language Specification, API, JDK, and IDE (P. 19)

• Computer languages have strict rules of usages.
• If you do not follow the rules when writing a program, the computer will be unable to understand it.
• Java language specification and Java API define the Java standard.

Java Language specification & API

• Java Language specification is a technical definition of the language that includes the syntax and semantics of the Java programming language.
• The application programming interface (API) contains predefined classes and interfaces for developing Java programs.
• The Java language specification is stable, but the API is still expanding.

Java API Editions

• There are 3 editions of Java API: Java 2 Standard Edition (J2SE), Java 2 Enterprise Edition (J2EE) and Java 2 Micro Edition (J2ME).
• J2SE: used to develop client-side standalone applications or applets.
• J2EE: used to develop server-side applications, such as Java servlets and JavaServer Pages.
• J2ME: used to develop applications for mobile devices, such as cell phones.

Java Development Toolkit (JDK)

• For J2SE 5.0, the Java Development Toolkit is called JDK5.0, formerly known as JDK1.5.
• JDK consists of a set of separate programs for developing and testing Java programs, each of which is invoked from a command line.
• Besides JDK, there are more than a dozen Java development tools such as JBuilder, NetBeans, Sun ONE, Eclipse, JCreator, … These tools provide an integrated development environment (IDE) for rapidly developing Java programs (Editing, compiling, building, debugging and online help).

4. A Simple Java Program (P. 20)

• There are 2 Java Programs: Java Applications and applets.
• Java Applications can be executed from any computer with a Java interpreter.
• Java applets can be run directly from a Java-compatible Web browser. Applets are suitable for deploying Web projects.

A simple java applicationcode

// This application program prints Welcome to Java!

public class Welcome {

• public static void main(String[] args){

System.out.println( "Welcome to Java!" );

Class heading

Main method signature

5. Creating, Compiling, and Executing a Java Program (P. 21)

• You have to create your program and compile it before it can be executed.
• If your program has compilation errors, you have to fix them by modifying the program then recompile it.
• If your program has runtime errors or does not produce the correct result, you have to modify the program, recompile it and execute it again.

6. Anatomy of the Java Program (P. 23)

• The previous sample code has the following components:
• Reserved words
• The main method
• Comments help programmers and users to communicate and understand the program.
• Comments are ignored by the compiler.
• A line comment: //
• A paragraph comment: /*…*/

// This application prints Welcome!

/* This application prints Welcome!*/

/* This application prints

Reserved Words

• Reserved Words or Keywords are words that have a specific meaning to the compiler and cannot be used for other purpose in the program.
• E.g: class, public, static, void are keywords
• Java uses certain reserved words called modifiers that specify the properties of the data, methods and classes and how they can be used.
• E.g: public, static, private, final, abstract and protected
• A statement represents an action or a sequence of actions.
• The statement Systemout.println(“Welcome to Java!”) in previous code is a statement to display the greeting “Welcome to Java!”.
• Every statement in Java ends with a semicolon (;).
• The braces in the program form a block that groups the components of the program.
• A block begins with ({) and ends with (}).
• Every method has a method block that groups the statements in the method.
• Blocks can be nested.

public class Test{

System.out.println(“Welcome to java!”);

Class block

Method block

• The class is the essential Java construct.
• To program in Java, you must understand classes and be able to write and use them.
• A program is defined by using one or more classes.
• Method consists of a collection of statements that perform a sequence of operations.
• E.g: System.out.println?
• System.out: the standard output object
• println: the method in the object which to displays a message to the standard output device.

The main Method

• Every Java application must have a user-declared main method that defines where the program begins.
• The Java interpreter executes the application by invoking the main method.
• The main method looks like this:
• //Statemtns;

How to write Java applications

Two types of Java Program

• Applet Program
• Program which is running on Web Browser
• Use Appletviewer or internet explorer
• Application program
• Typical application program
• Execute using interpreter named “java”

Checkpoints for the Beginner

• Java differentiates the upper- and lower- cases.
• File differentiates the upper- and lower- cases.
• Should set the environment variables correctly.
• Run the program including main()
• The format of main is always� public static void main (String args[])
• Or public static void main (String[] args)
• Applet class is always public.

Checkpoints for the Beginner (Cont.)

• One file can have only one “public” class.�– compile error.
• If there is a class declared “public”, then the file name should be same as that public class name.
• Constructor doesn’t have a return type and has the same name as the class name.
• There is no comma between width and height in the HTML file.��<applet code=class-file-name width=300 height=200>�</applet>

Rules of naming the class and method

• English Noun type
• Starts with upper-case letter
• Coming multiple nouns : not with “_” , combine with another Uppercase.
• Ex. Car, ChattingServer
• Method Name
• English Verb type
• Starts with lower-case letter
• Ex. getName(), setLabel()

Input and Output Statements

Printing a Line of Text Example (Welcome1.java)

// Welcome1.java

// Text-printing program.

public class Welcome1 {

// main method begins execution of Java application

public static void main( String args[] )

System.out.println( “Welcome to Java Programming!” );

} // end method main

} // end class Welcome1

Printing a Line of Text (Cont.)

Compiling a program

• Open a command prompt window, go to directory where program is stored
• Type javac Welcome1.java
• If no errors, Welcome1.class created
• Has bytecodes that represent application
• Bytecodes passed to Java interpreter
• Executing a program
• Type java Welcome1
• Interpreter loads .class file for class Welcome1
• .class extension omitted from command
• Interpreter calls method main

Modifying Our First Java Program

• Modify example in Welcome1.java to print same contents using different code
• Modifying programs
• Welcome2.java produces same output as Welcome1.java
• Using different code�System.out.print( "Welcome to " ); System.out.println( "Java Programming!" );
• System.out.print( "Welcome to " ) displays “Welcome to ” with cursor remaining on printed line
• System.out.println( "Java Programming!" ) displays “Java Programming!” on same line with cursor on next line

Example (Welcome2.java)

// Welcome2.java

public class Welcome2 {

System.out.print( “Welcome to ” );

System.out.println( “Java Programming!” );

} // end class Welcome2

Modifying Our First Java Program (Cont.)

Newline characters (\n)

• Interpreted as “special characters” by methods System.out.print and System.out.println
• Indicates cursor should be on next line
• Welcome3.java�System.out.println( "Welcome\nto\nJava\nProgramming!" );
• Line breaks at \n
• Can use in System.out.println or System.out.print to create new lines

System.out.println( "Welcome\nto\nJava\nProgramming!" );

Example (Welcome3.java)

// Welcome3.java

public class Welcome3 {

} // end class Welcome3

• Escape characters
• Backslash ( \ ) indicates special characters to be output

Displaying Text in a Dialog Box

• Most Java applications use windows or a dialog box
• We have used command window
• Class JOptionPane allows us to use dialog boxes
• Set of predefined classes for us to use
• Groups of related classes called packages
• Group of all packages known as Java class library or Java applications programming interface (Java API)
• JOptionPane is in the javax.swing package
• Package has classes for using Graphical User Interfaces (GUIs)

Displaying Text in a Dialog Box (Cont.)

• Upcoming program
• Application that uses dialog boxes
• Explanation will come afterwards
• Demonstrate another way to display output
• Packages, methods and GUI

Example (Welcome4.java)

// Welcome4.java

// Printing multiple lines in a dialog box.

// Java packages

import javax.swing.JOptionPane; // program uses JOptionPane

public class Welcome4 {

JOptionPane.showMessageDialog(

null , "Welcome\nto\nJava\nProgramming!" );

System.exit( 0 );

// terminate application with window

} // end class Welcome4

Another Java Application : Adding Integers

• Use input dialogs to input two values from user
• Use message dialog to display sum of the two values

Example (Addition.java)

// Addition.java

// Addition program that displays the sum of two numbers.

public class Addition {

String firstNumber; // first string entered by user

String secondNumber; // second string entered by user

int number1; // first number to add

int number2; // second number to add

int sum; // sum of number1 and number2

// read in first number from user as a String

firstNumber = JOptionPane.showInputDialog( "Enter first integer" );

// read in second number from user as a String

secondNumber =

JOptionPane.showInputDialog( "Enter second integer" );

Example (Addition.java) (Cont.)

// convert numbers from type String to type int

number1 = Integer.parseInt( firstNumber );

number2 = Integer.parseInt( secondNumber );

// add numbers

sum = number1 + number2;

// display result

JOptionPane.showMessageDialog( null , "The sum is " + sum, "Results" ,� JOptionPane.PLAIN_MESSAGE );

System.exit( 0 ); // terminate application with window

} // end class Addition

Review Questions

• What is needed to run Java on a computer?
• What are the input and output of a Java compiler?
• Explain the Java keywords. List some that you have learned.
• Is Java case-sensitive? What is the case for Java keyword?
• What is the Java source filename extension, and what is the Java bytecode filename extension?
• What is the statement to display a string on the console? What is the statement to display the message “Hello World” in a message dialog box?
• Read Chapter01 Summary (P. 28-29)
• Create a Java program that displays these text in a dialog:

I am a student at CMU.

I am practicing Java code.

“Thanks!!!”

• Create a Java program that receives 3 input from users (Name, Midterm and Final score) and display the result on a dialog box:

Student Name: xxx xxx

Midterm score: xx pt

Final score: xx pt

Total score: xx pt

Java Tutorial

Control statements, java object class, java inheritance, java polymorphism, java abstraction, java encapsulation, java oops misc.

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Introduction to programming in java, lecture 1: types, variables, operators.

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Ready to start your journey into the Java programming language? This course will walk you through understanding the program structure of a Java program, running your very first Java-based code, and storing data inside of a variable. Then you’ll start learning about object-oriented programming by exploring classes and methods.

Skills you'll gain

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Introduction to Java Programming

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Chapter 1: Computer Systems

Programming with Java. Problem Solving The purpose of writing a program is to solve a problem The general steps in problem solving are: –Understand the.

1 Kursusform  13 uger med: Undervisning i klassen 1,5-2 timer Opgave ”regning” i databar (løsninger på hjemmeside) En midtvejsopgave der afleveres og.

The Java Programming Language

ECE122 L2: Program Development February 1, 2007 ECE 122 Engineering Problem Solving with Java Lecture 2 Program Development.

Aalborg Media Lab 21-Jun-15 Software Design Lecture 1 “ Introduction to Java and OOP”

Outline Java program structure Basic program elements

Chapter 1 Introduction. © 2004 Pearson Addison-Wesley. All rights reserved1-2 Outline Computer Processing Hardware Components Networks The Java Programming.

Chapter 1 Introduction.

1 Character Strings and Variables Character Strings Variables, Initialization, and Assignment Reading for this class: L&L,

Copyright © 2009 Pearson Education, Inc. Publishing as Pearson Addison-Wesley Java Software Solutions Foundations of Program Design Sixth Edition by Lewis.

© 2004 Pearson Addison-Wesley. All rights reserved1-1 Intermediate Java Programming Lory Al Moakar.

Prepared by Uzma Hashmi Instructor Information Uzma Hashmi Office: B# 7/ R# address: Group Addresses Post message:

HOW COMPUTERS MANIPULATE DATA Chapter 1 Coming up: Analog vs. Digital.

1 Variables, Constants, and Data Types Primitive Data Types Variables, Initialization, and Assignment Constants Characters Strings Reading for this class:

Outline Character Strings Variables and Assignment Primitive Data Types Expressions Data Conversion Interactive Programs Graphics Applets Drawing Shapes.

Copyright © 2011 Pearson Education, Inc. Publishing as Pearson Addison-Wesley John Lewis, Peter DePasquale, and Joseph Chase Chapter 1: Introduction.

CSC 1051 – Data Structures and Algorithms I Dr. Mary-Angela Papalaskari Department of Computing Sciences Villanova University Course website:

© 2006 Pearson Education Computer Systems Presentation slides for Java Software Solutions for AP* Computer Science A 2nd Edition.

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Spire.Presentation for Java is a professional PowerPoint API that enables developers to create, read, write, convert and save PowerPoint documents in Java Applications.

eiceblue/Spire.Presentation-for-Java

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Repository files navigation

Spire.presentation-for-java library for processing powerpoint documents.

Product Page | Tutorials | Examples | Forum | Customized Demo | Temporary License

Spire.Presentation for Java is a professional PowerPoint API that enables developers to create, read , write, convert and save PowerPoint documents in Java Applications. As an independent Java library, Spire.Presentation doesn't need Microsoft PowerPoint to be installed on system.

A rich set of features can be supported by Spire.Presentation for Java, such as add/edit/remove slide , create chart , create table , add bullets , encrypt and decrypt PPT , add watermark , add hyperlink , insert audio and video , paragraph settings, document properties settings , insert/extract image , extract text , set animation , add header and footer , add/delete comment, add note , create SmartArt .

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Last updated: January 8, 2024

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Going into ads, no-ads reading , and bit about how Baeldung works if you're curious :)

Azure Container Apps is a fully managed serverless container service that enables you to build and deploy modern, cloud-native Java applications and microservices at scale. It offers a simplified developer experience while providing the flexibility and portability of containers.

Of course, Azure Container Apps has really solid support for our ecosystem, from a number of build options, managed Java components, native metrics, dynamic logger, and quite a bit more.

To learn more about Java features on Azure Container Apps, visit the documentation page .

You can also ask questions and leave feedback on the Azure Container Apps GitHub page .

Java applications have a notoriously slow startup and a long warmup time. The CRaC (Coordinated Restore at Checkpoint) project from OpenJDK can help improve these issues by creating a checkpoint with an application's peak performance and restoring an instance of the JVM to that point.

To take full advantage of this feature, BellSoft provides containers that are highly optimized for Java applications. These package Alpaquita Linux (a full-featured OS optimized for Java and cloud environment) and Liberica JDK (an open-source Java runtime based on OpenJDK).

These ready-to-use images allow us to easily integrate CRaC in a Spring Boot application:

Improve Java application performance with CRaC support

Modern software architecture is often broken. Slow delivery leads to missed opportunities, innovation is stalled due to architectural complexities, and engineering resources are exceedingly expensive.

Orkes is the leading workflow orchestration platform built to enable teams to transform the way they develop, connect, and deploy applications, microservices, AI agents, and more.

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To learn more about Java features on Azure Container Apps, you can get started over on the documentation page .

And, you can also ask questions and leave feedback on the Azure Container Apps GitHub page .

Whether you're just starting out or have years of experience, Spring Boot is obviously a great choice for building a web application.

Jmix builds on this highly powerful and mature Boot stack, allowing devs to build and deliver full-stack web applications without having to code the frontend. Quite flexibly as well, from simple web GUI CRUD applications to complex enterprise solutions.

Concretely, The Jmix Platform includes a framework built on top of Spring Boot, JPA, and Vaadin , and comes with Jmix Studio, an IntelliJ IDEA plugin equipped with a suite of developer productivity tools.

The platform comes with interconnected out-of-the-box add-ons for report generation, BPM, maps, instant web app generation from a DB, and quite a bit more:

>> Become an efficient full-stack developer with Jmix

DbSchema is a super-flexible database designer, which can take you from designing the DB with your team all the way to safely deploying the schema .

The way it does all of that is by using a design model , a database-independent image of the schema, which can be shared in a team using GIT and compared or deployed on to any database.

And, of course, it can be heavily visual, allowing you to interact with the database using diagrams, visually compose queries, explore the data, generate random data, import data or build HTML5 database reports.

>> Take a look at DBSchema

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The AI Assistant to boost Boost your productivity writing unit tests - Machinet AI .

AI is all the rage these days, but for very good reason. The highly practical coding companion, you'll get the power of AI-assisted coding and automated unit test generation . Machinet's Unit Test AI Agent utilizes your own project context to create meaningful unit tests that intelligently aligns with the behavior of the code. And, the AI Chat crafts code and fixes errors with ease, like a helpful sidekick.

Simplify Your Coding Journey with Machinet AI :

>> Install Machinet AI in your IntelliJ

Since its introduction in Java 8, the Stream API has become a staple of Java development. The basic operations like iterating, filtering, mapping sequences of elements are deceptively simple to use.

But these can also be overused and fall into some common pitfalls.

To get a better understanding on how Streams work and how to combine them with other language features, check out our guide to Java Streams:

Download the E-book

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Building a REST API with Spring?

Get started with Spring and Spring Boot, through the Learn Spring course:

Explore Spring Boot 3 and Spring 6 in-depth through building a full REST API with the framework:

>> The New “REST With Spring Boot”

Get started with Spring and Spring Boot, through the reference Learn Spring course:

>> LEARN SPRING

Yes, Spring Security can be complex, from the more advanced functionality within the Core to the deep OAuth support in the framework.

I built the security material as two full courses - Core and OAuth , to get practical with these more complex scenarios. We explore when and how to use each feature and code through it on the backing project .

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>> Learn Spring Security

Spring Data JPA is a great way to handle the complexity of JPA with the powerful simplicity of Spring Boot .

Get started with Spring Data JPA through the guided reference course:

>> CHECK OUT THE COURSE

1. Introduction

In this article, we’ll see how we can create a presentation using Apache POI .

This library gives us a possibility to create PowerPoint presentations, read existing ones, and to alter their content.

2. Maven Dependencies

To begin, we’ll need to add the following dependencies into our pom.xml :

The latest version of both libraries can be downloaded from Maven Central.

3. Apache POI

The Apache POI library supports both .ppt and .pptx files , and it provides the HSLF implementation for the Powerpoint ’97(-2007) file format and the XSLF for the PowerPoint 2007 OOXML file format.

Since a common interface doesn’t exist for both implementations, we have to remember to use the XMLSlideShow , XSLFSlide and XSLFTextShape classes when working with the newer .pptx file format .

And, when it’s required to work with the older .ppt format, use the HSLFSlideShow , HSLFSlide and HSLFTextParagraph classes.

We’ll use the new .pptx file format in our examples, and the first thing we have to do is create a new presentation, add a slide to it (maybe using a predefined layout) and save it.

Once these operations are clear, we can then start working with images, text, and tables.

3.1. Create a New Presentation

Let’s first create the new presentation:

3.2. Add a New Slide

When adding a new slide to a presentation, we can also choose to create it from a predefined layout. To achieve this, we first have to retrieve the XSLFSlideMaster that holds layouts (the first one is the default master):

Now, we can retrieve the XSLFSlideLayout and use it when creating the new slide:

Let’s see how to fill placeholders inside a template:

Remember that each template has its placeholders, instances of the XSLFAutoShape subclass, which could differ in number from one template to another.

Let’s see how we can quickly retrieve all placeholders from a slide:

3.3. Saving a Presentation

Once we’ve created the slideshow, the next step is to save it:

4. Working With Objects

Now that we saw how to create a new presentation, add a slide to it (using or not a predefined template) and save it, we can start adding text, images, links, and tables.

Let’s start with the text.

When working with text inside a presentation, as in MS PowerPoint, we have to create the text box inside a slide, add a paragraph and then add the text to the paragraph:

When configuring the XSLFTextRun , it’s possible to customize its style by picking the font family and if the text should be in bold, italic or underlined.

4.2. Hyperlinks

When adding text to a presentation, sometimes it can be useful to add hyperlinks.

Once we have created the XSLFTextRun object, we can now add a link:

4.3. Images

We can add images, as well:

However, without a proper configuration, the image will be placed in the top left corner of the slide . To place it properly, we have to configure its anchor point:

The XSLFPictureShape accepts a Rectangle as an anchor point, which allows us to configure the x/y coordinates with the first two parameters, and the width/height of the image with the last two.

Text, inside of a presentation, is often represented in the form of a list, numbered or not.

Let’s now define a list of bullet points:

Similarly, we can define a numbered list:

In case we’re working with multiple lists, it’s always important to define the indentLevel to achieve a proper indentation of items.

4.5. Tables

Tables are another key object in a presentation and are helpful when we want to display data.

Let’s start by creating a table:

Now, we can add a header:

Once the header is completed, we can add rows and cells to our table to display data:

When working with tables, it’s important to remind that it’s possible to customize the border and the background of every single cell.

5. Altering a Presentation

Not always when working on a slideshow, we have to create a new one, but we have to alter an already existing one.

Let’s give a look to the one that we created in the previous section and then we can start altering it:

5.1. Reading a Presentation

Reading a presentation is pretty simple and can be done using the XMLSlideShow overloaded constructor that accepts a FileInputStream :

5.2. Changing Slide Order

When adding slides to our presentation, it’s a good idea to put them in the correct order to have a proper flow of slides.

When this doesn’t happen, it’s possible to re-arrange the order of the slides. Let’s see how we can move the fourth slide to be the second one:

5.3. Deleting a Slide

It’s also possible to delete a slide from a presentation.

Let’s see how we can delete the 4th slide:

6. Conclusion

This quick tutorial has illustrated how to use the Apache POI API to read and write PowerPoint file from a Java perspective.

The complete source code for this article can be found, as always, over on GitHub .

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Free Java PowerPoint Library – Create Read Modify Print Convert PowerPoint Documents in Java

100%free java library to process powerpoint files.

Convert PowerPoint to PDF

Converting PowerPoint to PDF helps you maintain the layout and formatting of your presentation when viewed on different systems or devices.

Convert PowerPoint to XPS

XPS is a fixed-layout document format similar to PDF. As such, when you need to print, transfer or archive a PowerPoint document, converting it to XPS format would also be a great option.

Convert PowerPoint to Image

Compared with PowerPoint presentations, images are easier to view and more user friendly, because they can be opened on almost any applications without the need for Microsoft PowerPoint.

Create Slide Masters

A slide master controls the design of all the slides based on it. Using a slide master makes it easier to create presentations that look consistent and visually appealing.

Add a Watermark

Watermarks are used to declare confidentiality, copyright, source, or other attributes of the document, or as a decoration to make the document more attractive. Both text watermarks and image watermarks can be added to presentations.

Add Speaker Notes

Adding speaker notes to a PowerPoint presentation provides reference material for the speaker when they’re presenting a slideshow, allowing them to stay on track without forgetting the key points to deliver a flawless presentation.

Digitally Sign PowerPoint Documents

A digital signature provides assurances about the validity and authenticity of your presentation. Once a PowerPoint document is digitally signed, any changes to the document will invalidate the signature.

Extract Text and Images

If you only need the text and images of a PowerPoint document regardless of their formatting and layout, you can directly extract them from the document.

Insert Charts

Charts in PowerPoint can help illustrate data, show trends or changes in data over time, and make the whole document more professional and attractive.

Insert Images and Shapes

Adding pictures and shapes can make your presentations more interesting and engaging. And you can customize your images by cropping, reordering, changing colors or adding other formatting and customize shape according to your own color palette, preferences.

Insert a SmartArt

SmartArt is a way to combine text, shapes and colors into an image or illustration. SmartArt graphics let you easily create a visual representation of your information.

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Posted on Dec 14, 2018 • Updated on Dec 17, 2018

Create PowerPoint Presentations in Java

In this article, we will show you how to create PowerPoint presentations from scratch using a free Java PowerPoint API – Free Spire.Presentation for Java.

Table of Contents

Overview of free spire.presentation for java, create a “hello world” presentation.

• Format Content in Presentation

Add Images to Presentation

Add bullet list to presentation, create table in presentation, create chart in presentation, set document properties to presentation, protect presentation with password.

Free Spire.Presentation for Java is a free Java PowerPoint API, by which developers can create, read, modify, write, convert and save PowerPoint document in Java applications without installing Microsoft Office.

For more information of Free Spire.Presentation for Java, check here .

Download Free Spire.Presentation jars: https://www.e-iceblue.com/Download/presentation-for-java-free.html

The following example shows how to create a simple presentation with “Hello World” text.

Format Text Content in Presentation

The following example shows how to format text content in a presentation.

The following example shows how to add images to a presentation.

The following example shows how to add bullet list to presentation.

The following example shows how to create table in presentation.

Free Spire.Presentation for Java supports a variety types of charts. Here we choose bubble chart as an example.

The following example shows how to set document properties, such as author, company, key words, comments, category, title and subject, to a presentation.

The following example shows how to protect a presentation with password.

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How to Create a MS PowerPoint Presentation in Java with a Maven Project?

In the software industry, presentations play a major role as information can be conveyed easily in a presentable way via presentations. Using Java, with the help of Apache POI, we can create elegant presentations. Let us see in this article how to do that.

Necessary dependencies for using Apache POI:

It has support for both .ppt and .pptx files. i.e. via 

• HSLF implementation is used for the Powerpoint 97(-2007) file format 
• XSLF implementation for the PowerPoint 2007 OOXML file format.

There is no common interface available for both implementations. Hence for 

• .pptx formats, XMLSlideShow, XSLFSlide, and XSLFTextShape classes need to be used.
• .ppt formats, HSLFSlideShow, HSLFSlide, and HSLFTextParagraph classes need to be used.

Let us see the example of creating with .pptx format

Creation of a new presentation:

Next is adding a slide

Now, we can retrieve the XSLFSlideLayout and it has to be used while creating the new slide

Let us cover the whole concept by going through a sample maven project.

Example Maven Project

Project Structure:

As this is the maven project, let us see the necessary dependencies via pom.xml

PowerPointHelper.java

In this file below operations are seen

• A new presentation is created
• New slides are added
• save the presentation as

We can write Text, create hyperlinks, and add images. And also the creation of a list, and table are all possible. In general, we can create a full-fledged presentation easily as well can alter the presentation by adjusting the slides, deleting the slides, etc. Below code is self-explanatory and also added comments to get an understanding of it also.

We can able to get the presentation got created according to the code written and its contents are shown in the image below

We can test the same by means of the below test file as well

PowerPointIntegrationTest.java

Output of JUnit:

We have seen the ways of creating of presentation, adding text, images, lists, etc to the presentation as well as altering the presentation as well. Apache POI API is a very useful and essential API that has to be used in software industries for working with the presentation.

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