Difference between revisions of "Language - Java"

From Phidgets Support
Jump to: navigation, search
Line 351: Line 351:
  
 
===NetBeans===
 
===NetBeans===
We offer in-depth tutorials on using our examples in NetBeans and Eclipse in the [[#NetBeans|Windows NetBeans]] and [[#Eclipse|Windows Eclipse]] sections.
+
====Use our examples====
 +
One of the best ways to start programming with Phidgets is to use our example code as a guide. In order to run the examples, you will need to download and install [https://netbeans.org/ NetBeans]. You will also need a copy of [{{SERVER}}/downloads/phidget22/libraries/any/Phidget22Java.zip phidget22.jar].
  
====Installation====
 
Although Eclipse is standard in the Debian/Ubuntu package repository, NetBeans is no longer standard. What is more, Netbeans does not install by default into a folder within your path.
 
  
To install NetBeans:
+
Now that you have NetBeans installed, select an example that will work with your Phidget:
 +
*{{SampleCode|Java|Java Examples}}
  
1. Download the install script from website: '''<span style="color:#FF0000">http://netbeans.org/downloads/</span>'''
 
  
2. Change the permissions of the downloaded file to be executable. Usually, this is something like:
+
Next, open NetBeans and create a new project:
 +
[[Image:Java_netbeans_linux_newproject.PNG|link=|center]]
  
chmod +x netbeans-7.1-ml-javase-linux.sh
 
3. Run the downloaded file as a script. (This will result in a GUI interaction that walks you through installation.)
 
  
4. To find the location where the NetBeans installation occurred, run:
+
Give your project a name and finish creating the project:
updatedb
+
[[Image:Java_netbeans_linux_nameproject.PNG|link= |center]]
locate netbeans
+
  
5. Usually, the location of the binary is /usr/local/netbeans-7.1/bin/netbeans, where 7.1 is the installed version.
 
  
====Use our examples====
+
Delete the java file that was generated with the project:
Once you have NetBeans installed, running our examples will be very similar to the process described in the Windows NetBeans section
+
[[Image:Java_netbeans_linux_delete.png|link= |center]]
  
====Write your own code====
 
When you are building a project from scratch, or adding Phidget function calls to an existing project, you'll need to configure your development environment to properly link the Phidget Java library. Please see the Windows NetBeans section for instructions if you are unfamiliar with NetBeans.
 
In your code, you will need to include the Phidget Java library:
 
  
 +
Replace the deleted file with the example file that you downloaded. Next, add a reference to phidget22.jar by right-clicking on the libraries folder:
 +
[[Image:Java_netbeans_linux_addjar.png|link= |center]]
 +
 +
 +
[[Image:Java_netbeans_linux_jarpath.png|link=|center]]
 +
 +
 +
Before you run the example, you may need to set up your Udev rules. An explanation on how to do this is provided on the Linux OS page, which can be accessed [[OS - Linux#Setting udev Rules | here]].
 +
 +
 +
After pressing run and selecting the main class, the example will be up and running for your device. Play around with the device and experiment with some of the functionality. When you are ready, the next step is configuring your project and writing your own code!
 +
 +
====Configure your project====
 +
When you are building a project from scratch, or adding Phidget functionality to an existing project, you'll need to configure your development environment to properly link the Phidget Java library.
 +
 +
 +
To include the Phidget Java library, add the following line to your code:
 
<syntaxhighlight lang="java">
 
<syntaxhighlight lang="java">
 
import com.phidget22.*
 
import com.phidget22.*
 
</syntaxhighlight>
 
</syntaxhighlight>
  
The project now has access to the Phidget function calls and you are ready to begin coding.
+
You can now create your project as shown in the previous section.
 +
 
  
== Edit the Examples ==
+
The project now has access to Phidgets. Next, view the [[#Write Code | write your own code]] section located below.
  
By following the instructions for your operating system and compiler above, you probably now have a working example and want to understand it better so you can change it to do what you want. This teaching section has resources for you to learn from the examples and write your own.
 
Your main reference for writing Java code will be the {{Phidget22API}}.
 
  
 
=== Code Snippets ===
 
=== Code Snippets ===

Revision as of 16:56, 2 June 2017

Quick Downloads

Documentation

Example Code

Libraries

Getting Started with Java

Welcome to using Phidgets with Java! By using Java, you will have access to the complete Phidget22 API, including events. We also provide example code in Java for all Phidget devices.

If you are developing for Windows, keep reading. Otherwise, select your operating system to jump ahead:

Windows

If you haven't already, please visit the Windows page before you continue reading. There you will be instructed on how to properly set up your Windows machine so you can follow the guides below!

Javac (Command Line)

Use our examples

One of the best ways to start programming with Phidgets is to use our example code as a guide. In order to run the examples, you will need to download and install the Java Development Kit from Oracle.


Next, select an example that will work with your Phidget:


Copy phidget22.jar from the following location:

  • C:\Program Files\Phidgets\Phidget22\phidget22.jar


Place both the example file and the phidget22.jar file in the same location. Your folder should now look something like this:

Java javac folder.png


Open the command prompt at the folder location. Next, enter the following command in the command prompt:

javac -classpath .;phidget22.jar example.java


Finally, enter the following command to run the program:

java -classpath .;phidget22.jar example


Java javac.PNG


You should now have the example up and running for your device. Play around with the device and experiment with some of the functionality. When you are ready, the next step is configuring your project and writing your own code!

Configure your project

When you are building a project from scratch, or adding Phidget functionality to an existing project, you'll need to configure your development environment to properly link the Phidget Java library.


To include the Phidget Java library, add the following line to your code:

import com.phidget22.*

You can now compile the file as shown in the previous section.


The project now has access to Phidgets. Next, view the write your own code section located below.

NetBeans

Use our examples

One of the best ways to start programming with Phidgets is to use our example code as a guide. In order to run the examples, you will need to download and install NetBeans.


Now that you have NetBeans installed, select an example that will work with your Phidget:


Next, open NetBeans and create a new project:

Java netbeans newproject.PNG


Give your project a name and finish creating the project:

Java netbeans nameproject.PNG


Delete the java file that was generated with the project:

Java netbeans deletefile.png


Replace the deleted file with the example file that you downloaded. Next, add a reference to phidget22.jar by right-clicking on the libraries folder:

Java netbeans addjar.png


You can find phidget22.jar at the following location:

  • C:\Program Files\Phidgets\Phidget22\phidget22.jar


Java netbeans jarpath.png


After pressing run and selecting the main class, the example will be up and running for your device. Play around with the device and experiment with some of the functionality. When you are ready, the next step is configuring your project and writing your own code!

Configure your project

When you are building a project from scratch, or adding Phidget functionality to an existing project, you'll need to configure your development environment to properly link the Phidget Java library.


To include the Phidget Java library, add the following line to your code:

import com.phidget22.*

You can now create your project as shown in the previous section.


The project now has access to Phidgets. Next, view the write your own code section located below.

Eclipse

Use our examples

One of the best ways to start programming with Phidgets is to use our example code as a guide. In order to run the examples, you will need to download and install Eclipse.


Now that you have Eclipse installed, select an example that will work with your Phidget:


Next, create a new Java project. Give it the same name as the example you downloaded above:

Java eclipse newproject.PNG


Click Next > and add phidget22.jar to your project as an external jar. You can find phidget22.jar at the following location:

  • C:\Program Files\Phidgets\Phidget22\phidget22.jar


Java eclipse addjar.png


Finally, drag the example java file into the src folder that has been created for you and run the example:

Java eclipse run.png


You should now have the example up and running for your device. Play around with the device and experiment with some of the functionality. When you are ready, the next step is configuring your project and writing your own code!

Configure your project

When you are building a project from scratch, or adding Phidget functionality to an existing project, you'll need to configure your development environment to properly link the Phidget Java library.


To include the Phidget Java library, add the following line to your code:

import com.phidget22.*

You can now create your project as shown in the previous section.


The project now has access to Phidgets. Next, view the write your own code section located below.

macOS

If you haven't already, please visit the macOS page before you continue reading. There you will be instructed on how to properly set up your macOS machine so you can follow the guides below!

Javac (Terminal)

Use our examples

One of the best ways to start programming with Phidgets is to use our example code as a guide. In order to run the examples, you will need to download and install the Java Development Kit from Oracle. You will also need a copy of phidget22.jar.


Next, select an example that will work with your Phidget:


Place both the example file and the phidget22.jar file in the same location. Your folder should now look something like this:

Java mac javac folder.png


Open the terminal at the folder location. Next, enter the following command:

javac -classpath .:phidget22.jar example.java


Finally, enter the following command to run the program:

java -classpath .:phidget22.jar example


Java mac javac run.png


You should now have the example up and running for your device. Play around with the device and experiment with some of the functionality. When you are ready, the next step is configuring your project and writing your own code!

Configure your project

When you are building a project from scratch, or adding Phidget functionality to an existing project, you'll need to configure your development environment to properly link the Phidget Java library.


To include the Phidget Java library, add the following line to your code:

import com.phidget22.*

You can now compile your project as shown in the previous section.


The project now has access to Phidgets. Next, view the write your own code section located below.

Netbeans

Use our examples

One of the best ways to start programming with Phidgets is to use our example code as a guide. In order to run the examples, you will need to download and install NetBeans. You will also need a copy of phidget22.jar.


Now that you have NetBeans installed, select an example that will work with your Phidget:


Next, open NetBeans and create a new project:

Java netbeans mac newproject.png


Give your project a name and finish creating the project:

Java netbeans mac nameproject.png


Delete the file that was generated with the project:

Java netbeans mac delete.png


Replace the deleted file with the example you downloaded:

Java netbeans mac replace.png

Next, add a reference to the phidget22.jar you downloaded above by right-clicking on the libraries folder:

Java netbeans mac addjar.png


After pressing run and selecting the main class, the example will be up and running for your device. Play around with the device and experiment with some of the functionality. When you are ready, the next step is configuring your project and writing your own code!

Configure your project

When you are building a project from scratch, or adding Phidget functionality to an existing project, you'll need to configure your development environment to properly link the Phidget Java library.


To include the Phidget Java library, add the following line to your code:

import com.phidget22.*

You can now create your project as shown in the previous section.


The project now has access to Phidgets. Next, view the write your own code section located below.

Eclipse

Use our examples

One of the best ways to start programming with Phidgets is to use our example code as a guide. In order to run the examples, you will need to download and install Eclipse.You will also need a copy of phidget22.jar.


Now that you have Eclipse installed, select an example that will work with your Phidget:


Next, create a new Java project. Give it the same name as the example you downloaded above:

Java eclipse mac newproject.png


Click Next > and add phidget22.jar to your project as an external jar:

Java eclipse mac addjar.png


Finally, drag the example java file into the src folder that has been created for you and run the example:

Java eclipse mac run.png


You should now have the example up and running for your device. Play around with the device and experiment with some of the functionality. When you are ready, the next step is configuring your project and writing your own code!

Configure your project

When you are building a project from scratch, or adding Phidget functionality to an existing project, you'll need to configure your development environment to properly link the Phidget Java library.


To include the Phidget Java library, add the following line to your code:

import com.phidget22.*

You can now create your project as shown in the previous section.


The project now has access to Phidgets. Next, view the write your own code section located below.

Linux

If you haven't already, please visit the Linux page before you continue reading. There you will be instructed on how to properly set up your Linux machine so you can follow the guides below!

Javac (Terminal)

Use our examples

One of the best ways to start programming with Phidgets is to use our example code as a guide. In order to run the examples, you will need to download and install the JDK. You can do this by entering the following command in the terminal (where VERSION is replaced with your preferred version number):

apt-get install openjdk-VERSION-jdk

Before continuing, ensure your JDK version matches your JRE version:

javac -version
java -version


You will also need a copy of phidget22.jar.


Now that you have the JDK installed and phidget22.jar on hand, select an example that will work with your Phidget:


Your project folder should now look something like this:

Java javac linux folder.PNG


Next, open the terminal at the folder location and enter the following command:

javac -classpath .:phidget22.jar example.java

Finally, enter the following command to run the program:

java -classpath .:phidget22.jar example


Java javac linux run.PNG


You should now have the example up and running for your device. Play around with the device and experiment with some of the functionality. When you are ready, the next step is configuring your project and writing your own code!

Configure your project

When you are building a project from scratch, or adding Phidget functionality to an existing project, you'll need to configure your development environment to properly link the Phidget Java library.


To include the Phidget Java library, add the following line to your code:

import com.phidget22.*

You can now compile the file as shown in the previous section.


The project now has access to Phidgets. Next, view the write your own code section located below.

NetBeans

Use our examples

One of the best ways to start programming with Phidgets is to use our example code as a guide. In order to run the examples, you will need to download and install NetBeans. You will also need a copy of phidget22.jar.


Now that you have NetBeans installed, select an example that will work with your Phidget:


Next, open NetBeans and create a new project:

Java netbeans linux newproject.PNG


Give your project a name and finish creating the project:

Java netbeans linux nameproject.PNG


Delete the java file that was generated with the project:

Java netbeans linux delete.png


Replace the deleted file with the example file that you downloaded. Next, add a reference to phidget22.jar by right-clicking on the libraries folder:

Java netbeans linux addjar.png


Java netbeans linux jarpath.png


Before you run the example, you may need to set up your Udev rules. An explanation on how to do this is provided on the Linux OS page, which can be accessed here.


After pressing run and selecting the main class, the example will be up and running for your device. Play around with the device and experiment with some of the functionality. When you are ready, the next step is configuring your project and writing your own code!

Configure your project

When you are building a project from scratch, or adding Phidget functionality to an existing project, you'll need to configure your development environment to properly link the Phidget Java library.


To include the Phidget Java library, add the following line to your code:

import com.phidget22.*

You can now create your project as shown in the previous section.


The project now has access to Phidgets. Next, view the write your own code section located below.


Code Snippets

When programming in Java, you're in luck. All of our code snippet examples on our Phidget Programming Basics page are in both C++ and Java. Therefore, we do not include any here, because that page is much more in-depth, and you won't have to have two pages open at once. So head over there, and start writing code!

Further Reading

Phidget Programming Basics - Here you can find the basic concepts to help you get started with making your own programs that use Phidgets.

Data Interval/Change Trigger - Learn about these two properties that control how much data comes in from your sensors.

Using Multiple Phidgets - It can be difficult to figure out how to use more than one Phidget in your program. This page will guide you through the steps.

Polling vs. Events - Your program can gather data in either a polling-driven or event-driven manner. Learn the difference to determine which is best for your application.

Logging, Exceptions, and Errors - Learn about all the tools you can use to debug your program.

Phidget Network Server - Phidgets can be controlled and communicated with over your network- either wirelessly or over ethernet.