Language - Java: Difference between revisions

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Preamble about the language and its general strengths and weaknesses.
{{#seo:|description=Learn how to use Phidget USB devices with Java.}}
[[Category:Language]]


==Assessment for use with Phidgets==
==Get Started==
Our honest opinion on how well this language is suited to controlling Phidgets. If it is a poor choice, suggest and link similar (better) languages.
With the Phidget22 library, it's easy to create Java applications that work with Phidget devices.


==Support==
==Java Libraries==
We provide [[Levels of Support|full support]] to Java.


==Restrictions==
===Source Files===
In this section, list any restrictions or limitations that this particular language may impose. For example, incompatibility with certain operating systems.
The Phidget22 Java library source files are available [https://cdn.phidgets.com/downloads/phidget22/libraries/windows/Phidget22-windevel.zip here].


==Development Environments and Compilers==
==Development Environment Configuration==


Describe each major compiler and notable differences or important information. (eg. framework versions) If there are known issues/workarounds mention them and link to the corresponding issue at the bottom of the page.  
Before choosing a development environment, make sure you have the [http://www.oracle.com/technetwork/java/index.html Java Development Kit] installed.  


==Drivers, Libraries and Resources==
===Javac===
Before you can run your program, you need to set up the proper environment and get the necessary files off the Phidgets website.  
{| style="margin:auto;" class="table-no-border mw-collapsible mw-collapsed"
Visit the drivers section at www.phidgets.com and get the latest:
|+ '''Instructions'''
* [http://www.phidgets.com/drivers.php Phidget Framework]
|The easiest way to allow Java to access the Phidgets Java library is to place a copy of '''phidget22.jar''' in the same folder as your .java program. ||[[Image:Language_java_javac_folder.png|center|350px|link=https://cdn.phidgets.com/docs/images/8/89/Language_java_javac_folder.png]]
* [http://www.phidgets.com/downloads/libraries/phidget21jar_2.1.8.20110615.zip Phidget21.jar]
|-
You will need the Phidget Framework to use and to program with Phidgets. We also recommend that you download the following reference materials:
|[https://www.phidgets.com/downloads/phidget22/libraries/any/Phidget22Java.zip You can download phidget22.jar here].||
* [http://www.phidgets.com/documentation/JavaDoc.zip API Manual]
|-
* [http://www.phidgets.com/documentation/web/javadoc/index.html API Reference]
|Once you are ready to run your program, enter the following command in the command prompt or terminal:
* [http://www.phidgets.com/downloads/examples/JavaJNI_2.1.8.20110615.zip Java Sample Code]
<syntaxhighlight>
* You can find a high level discussion about programming with Phidgets in general on the [[General API]] page.
javac -classpath .;phidget22.jar example.java
* The [[Device Functionality]] page explains the general operational information for your device.
</syntaxhighlight>
Finally, enter the following command to run the program:
<syntaxhighlight>
java -classpath .;phidget22.jar example
</syntaxhighlight>
||
|-
|}


You may want to have these pages open while working through these instructions.
===Netbeans===
{| style="margin:auto;" class="table-no-border mw-collapsible mw-collapsed"
|+ '''Instructions'''
|The easiest way to allow Java to access the Phidgets Java library is to place a copy of '''phidget22.jar''' in the same folder as your .java program.  ||[[Image:Language_java_javac_folder.png|center|350px|link=https://cdn.phidgets.com/docs/images/8/89/Language_java_javac_folder.png]]
|-
|[https://www.phidgets.com/downloads/phidget22/libraries/any/Phidget22Java.zip You can download phidget22.jar here].||
|-
| To start, open NetBeans and create a new project. Select Java Application and follow the steps as directed by Netbeans.|| [[Image:Windows_netbeans1.jpg|center|350px|link=https://cdn.phidgets.com/docs/images/c/c9/Windows_netbeans1.jpg]]
|-
| Next, add a reference to phidget22.jar by right-clicking on the libraries folder. || [[Image:Windows_netbeans2.jpg|center|350px|link=https://cdn.phidgets.com/docs/images/2/2b/Windows_netbeans2.jpg]]
|-
| Navigate to the folder where you downloaded phidget22.jar, and select it. || [[Image:Windows_netbeans3.jpg|center|350px|link=https://cdn.phidgets.com/docs/images/7/76/Windows_netbeans3.jpg]]
|-
| The project now has access to Phidgets. ||
|}


==Getting Started==
===Eclipse===
Here we provide a basic setup guide and code samples to start a project from scratch.
{| style="margin:auto;" class="table-no-border mw-collapsible mw-collapsed"
|+ '''Instructions'''
|The easiest way to allow Java to access the Phidgets Java library is to place a copy of '''phidget22.jar''' in the same folder as your .java program.  ||[[Image:Language_java_javac_folder.png|center|350px|link=https://cdn.phidgets.com/docs/images/8/89/Language_java_javac_folder.png]]
|-
|[https://www.phidgets.com/downloads/phidget22/libraries/any/Phidget22Java.zip You can download phidget22.jar here].||
|-
| To start, open Eclipse and create a new Java project.|| [[Image:Windows_eclipse1.jpg|center|350px|link=https://cdn.phidgets.com/docs/images/3/3a/Windows_eclipse1.jpg]]
|-
| On the Libraries tab, click Add External JARs and add phidget22.jar to your project as an external jar. || [[Image:Windows_eclipse2.jpg|center|350px|link=https://cdn.phidgets.com/docs/images/0/0c/Windows_eclipse2.jpg]]
|-
| Create a new Class in your project. || [[Image:Windows_eclipse3.jpg|center|350px|link=https://cdn.phidgets.com/docs/images/d/d9/Windows_eclipse3.jpg]]
|-
| Name the class, and be sure to check the '''public static void main''' box. || [[Image:Windows_eclipse4.jpg|center|350px|link=https://cdn.phidgets.com/docs/images/8/87/Windows_eclipse4.jpg]]
|-
| Your project now has access to Phidgets! ||
|-
|}


==Building your Project==
=== PhidgetSBC Web Interface ===
Describe the different ways a project could be built using this language.
{| style="margin:auto;" class="table-no-border mw-collapsible mw-collapsed"
|+'''Instructions'''
|<center>{{#ev:youtube|gZmWvWXICIA|rel=0}}</center>
|}


==Common Problems and Solutions/Workarounds==
==Example Code==
Here you can put various frequent problems and our recommended solutions.
Navigate to our [https://www.phidgets.com/?view=code_samples&lang=Java Code Sample Generator] to view and download code samples that are tailored to your specific device.
 
[[Image:Language_java_codesample.png|center|600px|link=https://cdn.phidgets.com/docs/images/a/af/Language_java_codesample.png]]
 
===Phidget Programming Basics===
{{PhidgetProgrammingBasicsLink}}
 
==API==
[{{SERVER}}/?view=api&lang=Python Phidget22 API]

Latest revision as of 22:38, 12 March 2026


Get Started

With the Phidget22 library, it's easy to create Java applications that work with Phidget devices.

Java Libraries

Source Files

The Phidget22 Java library source files are available here.

Development Environment Configuration

Before choosing a development environment, make sure you have the Java Development Kit installed.

Javac

Instructions
The easiest way to allow Java to access the Phidgets Java library is to place a copy of phidget22.jar in the same folder as your .java program.
Language java javac folder.png
You can download phidget22.jar here.
Once you are ready to run your program, enter the following command in the command prompt or terminal: 
javac -classpath .;phidget22.jar example.java

Finally, enter the following command to run the program: 

java -classpath .;phidget22.jar example

Netbeans

Instructions
The easiest way to allow Java to access the Phidgets Java library is to place a copy of phidget22.jar in the same folder as your .java program.
Language java javac folder.png
You can download phidget22.jar here.
To start, open NetBeans and create a new project. Select Java Application and follow the steps as directed by Netbeans.
Windows netbeans1.jpg
Next, add a reference to phidget22.jar by right-clicking on the libraries folder.
Windows netbeans2.jpg
Navigate to the folder where you downloaded phidget22.jar, and select it.
Windows netbeans3.jpg
The project now has access to Phidgets.

Eclipse

Instructions
The easiest way to allow Java to access the Phidgets Java library is to place a copy of phidget22.jar in the same folder as your .java program.
Language java javac folder.png
You can download phidget22.jar here.
To start, open Eclipse and create a new Java project.
Windows eclipse1.jpg
On the Libraries tab, click Add External JARs and add phidget22.jar to your project as an external jar.
Windows eclipse2.jpg
Create a new Class in your project.
Windows eclipse3.jpg
Name the class, and be sure to check the public static void main box.
Windows eclipse4.jpg
Your project now has access to Phidgets!

PhidgetSBC Web Interface

Instructions

Example Code

Navigate to our Code Sample Generator to view and download code samples that are tailored to your specific device.

Language java codesample.png

Phidget Programming Basics

To learn more about the structure of the example code, visit our Phidget Programming Basics guide.

API

Phidget22 API

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