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In this chapter, we will see how to create a PDF document and add a list to it using the iText library.
Creating a List
You can create an empty PDF Document by instantiating the Document class. While instantiating this class, you need to pass a PdfDocument object as a parameter, to its constructor. Then, to add a list to the document, you need to instantiate the List class and add this object to the document using the add() method.
Following are the steps to create a PDF document and add a List in it.
Step 1: Creating a PdfWriter object
The PdfWriter class represents the DocWriter for a PDF. This class belongs to the package com.itextpdf.kernel.pdf. The constructor of this class accepts a string, representing the path of the file where the PDF is to be created.
Instantiate the PdfWriter class by passing a string value (representing the path where you need to create a PDF) to its constructor, as shown below.
When the object of this type is passed to a PdfDocument (class), every element added to this document will be written to the file specified.
Step 2: Creating a PdfDocument object
The PdfDocument class is the class that represents the PDF Document in iText, this class belongs to the package com.itextpdf.kernel.pdf. To instantiate this class (in writing mode), you need to pass an object of the class PdfWriter to its constructor.
Instantiate the PdfDocument class by passing the above created PdfWriter object to its constructor, as shown below.
Once a PdfDocument object is created, you can add various elements like page, font, file attachment, and event handler using the respective methods provided by its class.
Step 3: Creating the Document object
The Document class of the package com.itextpdf.layout is the root element while creating a self-sufficient PDF. One of the constructors of this class accepts an object of the class PdfDocument.
Mail designer 365 1 1 2. Instantiate the Document class by passing the object of the class PdfDocument created in the previous steps, as shown below.
Step 4: Creating a List object
The List class represents a series of objects that are vertically outlined. It belongs to the package com.itextpdf.layout.element.
Instantiate the List class as shown below.
Step 5: Adding elements to the list
Add contents to the list object using the add() method of the List class by passing String values, as shown below.
Itext 1 2 8 Fraction
Step 6: Adding List to the document
Add the list object created in the previous step using the add() method of the Document class, as shown below.
Itext 1 2 8 X 2
Step 7: Closing the Document
Close the document using the close() method of the Document class as shown below.
Example
The following Java program demonstrates how to create a PDF document and add a list to it using the iText library. It creates a PDF document with the name addingList.pdf, adds a list to it, and saves it in the path C:/itextExamples/.
Save this code in a file with name AddingList.java.
Compile and execute the saved Java file from the Command prompt using the following commands −
Itext 1 2 8 X 8
Upon execution, the above program creates a PDF document, displaying the following message.
If you verify the specified path, you can find the created PDF document, as shown below.
Dependency Tree
- displaytag:displaytag-examples:war:1.2
- commons-lang:commons-lang:jar:2.3 (compile)
- junit:junit:jar:3.8.1 (test)
- javax.servlet:servlet-api:jar:2.4 (provided)
- javax.servlet:jsp-api:jar:2.0 (provided)
- javax.servlet:servlet-api:jar:2.4 (provided)
- com.lowagie:itext:jar:1.3 (compile)
- log4j:log4j:jar:1.2.13 (compile)
- javax.servlet:jstl:jar:1.1.2 (compile)
- taglibs:standard:jar:1.0.6 (compile)
- displaytag:displaytag-export-poi:jar:1.2 (compile)
- commons-lang:commons-lang:jar:2.3 (compile)
- commons-beanutils:commons-beanutils:jar:1.7.0 (compile)
- org.apache.poi:poi:jar:3.2-FINAL (compile)
- log4j:log4j:jar:1.2.13 (runtime)
- displaytag:displaytag:jar:1.2 (compile)
- displaytag:displaytag:jar:1.2 (compile)
- commons-collections:commons-collections:jar:3.1 (compile)
- commons-lang:commons-lang:jar:2.3 (compile)
- com.lowagie:itext:jar:1.3 (compile)
- commons-beanutils:commons-beanutils:jar:1.7.0 (compile)
- org.slf4j:jcl104-over-slf4j:jar:1.4.2 (compile)
- org.slf4j:slf4j-log4j12:jar:1.4.2 (compile)
- org.slf4j:slf4j-api:jar:1.4.2 (compile)
- log4j:log4j:jar:1.2.13 (compile)
