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Revised: Thu Jun 02 19:21:59 CDT 2016
This page is included in the following Books:
This is a page from the book titled The json-simple Java Library . The book explains how to use the json-simple Java library to generate, transform, and query JSON text. This page explains how to get started using the library.
I recommend that you open another copy of this module in a separate browser window and use the following links to easily find and view the Figuresand Listings while you are reading about them.
As of May 2016, the library can be downloaded in a jar file named json-simple-1.1.1.jar . The name of the jar file may be expected to change over time as new versions are released.
Also as of May 2016, a file named json_simple-1.1-all.zip , which contains source code for the library, can bedownloaded from that same page. See the contents of that zip file for a copy of thelicense covering the material in the library.
I used the source code from that file to create adocumentation package for version 1.1, which you can download here . Download and extract the contents of the file named docs.zip into an empty folder and open the file named index.html in your browser to view the documentation in standard javadoc format.
To use the library, you need to download the latest version of the jar file, store it somewhere on your system, and put it on your classpath. Theinstructions on this page apply to Windows 7. If you are using some other operating system, you will need to adjust the instructions to make themcompatible with your operating system.
Create a Java source code file named Code containing the code shown in Listing 1 and store it in a folder somewhere on your system.
/****************************************************
Tested with Java 8, Windows 7, andjson-simple-1.1.1.jar
*****************************************************/import org.json.simple.ItemList;
class Code{public static void main(String[] args){System.out.println("ItemList: " + new ItemList().
getClass().getSuperclass());}//end main
}//end class code Assuming that you have downloaded the jar file and stored it in a folder named json-simple in the root directory of your C drive, create a batch file containing the commands shown in Listing 2 and store the batch file in the same folder as the source code file named Code .
echo off
rem Sets the classpath, compiles, and runs Code.java.del *.class
javac -cp .;C:\json-simple\json-simple-1.1.1.jar Code.javajava -cp .;C:\json-simple\json-simple-1.1.1.jar Code
pause Double-click the batch file. Assuming that you have a compatible version of the Java Development Kit installed on your system, your test program shouldbe compiled and executed, producing the output shown in Figure 1 on your computer screen.
ItemList: class java.lang.Object
Press any key to continue . . . By way of explanation, the code in Listing 1 instantiates a new object of the class named ItemList from the JSON library. Then it gets and displays the superclass of that class, which is the class named Object . In other words, the JSON library class named ItemList extends the standard class named Object .
If you were able to produce the output shown in Figure 1 , you are ready to start generating, transforming, and querying JSON text using Java and the json-simple Java library.
This section contains a variety of miscellaneous information.
Financial : Although the Connexions site makes it possible for you to download a PDF file for thismodule at no charge, and also makes it possible for you to purchase a pre-printed version of the PDF file, you should beaware that some of the HTML elements in this module may not translate well into PDF.
I also want you to know that, I receive no financial compensation from the Connexions website even if you purchase the PDF version of the module.
In the past, unknown individuals have copied my modules from cnx.org, converted them to Kindle books, and placed them for sale on Amazon.com showing me as the author. Ineither receive compensation for those sales nor do I know who does receive compensation. If you purchase such a book, please beaware that it is a copy of a module that is freely available on cnx.org and that it was made and published withoutmy prior knowledge.
Affiliation : : I am a professor of Computer Information Technology at Austin Community College in Austin, TX.
-end-
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