Installing Java (Windows) And Writing Your First Program

AppendixInstalling Java (Windows) and Writing your First ProgramWe will be running Java from the commandline and writing Java code in Notepad (orsimilar).The first step is to ensure you have installedthe Java SDK. It can be downloaded from theclass webpage.Once downloaded, install.in order to run Java from anywhere in yoursystem, the files need to be added to yourPATH variable in windows.To do this, go to ‘Control Panel’ - ‘System’ - the ‘Advanced system settings’ option on theleft. Now under click ‘environment variables’and then click edit on the PATH variable.Once the PATH edit window appears, add asemicolon then the path to wherever theJAVA SDK binaries (bin) was installed. In thisexample, the JDK was installed to:C:\Program Files\Java\jdk1.6.0 24\binIf you do not think your PATH variable iscorrect you can type PATH into a commandwindow to display your path.Now that you have installed Java, make adirectory for your first Java program andopen Notepad .Make a new file called ‘HelloWorld.java’ andsave it into the directory you made.13 P a g e

Enter the following code. Java is casesensitive, so be careful to capitalize EXACTLYthe same as what is below.public class HelloWorld{public static void main ( String[] args ){System.out.println("Hello World!\n");}}To run the program, you first need to compilethe Java into byte code and then run it withthe Java virtual machine.Open a command line and change to thedirectory where your class (program) issaved. Type the following two commands:javac HelloWorld.javajava HelloWorldInstalling Java (Linux) and Writing your First ProgramWe will be running Java from the commandline and writing Java code in Gedit (orsimilar).The first step is to ensure you have installedthe Java SDK. It can be installed with thefollowing commands:sudo apt-get install sun-java6-pluginsudo apt-get install sun-java6-jdk14 P a g e

Now that you have installed Java, make adirectory for your first Java program andopen Gedit.Make a new file called ‘HelloWorld.java’ andsave it into the directory you made.Enter the following code. Java is casesensitive, so be careful to capitalize EXACTLYthe same as what is below.public class HelloWorld{public static void main ( String[] args ){System.out.println("Hello World!\n");}}To run the program, you first need to compilethe Java into byte code and then run it withthe Java virtual machine.Open a command line and change to thedirectory where your class (program) issaved. Type the following two commands:15 P a g e

Installing Java (Mac) and Writing your First ProgramJava is installed by default on Mac OS, make adirectory for your first Java program andopen your editing program.Make a new file called ‘HelloWorld.java’ andsave it into the directory you made.Enter the following code. Java is casesensitive, so be careful to capitalize EXACTLYthe same as what is below.public class HelloWorld{public static void main ( String[] args ){System.out.println("Hello World!\n");}}To run the program, you first need to compilethe Java into byte code and then run it withthe Java virtual machine.Open a terminal and change to the directorywhere your class (program) is saved. Type thefollowing two commands:javac HelloWorld.javajava HelloWorld16 P a g e

FTDI/Serial InstallationInstalling the FTDI drivers and a Terminal Program in Windows1. Most versions of windows already have theFTDI driver as part of the operating system.Simply connect your Wunderboard to the‘Serial Connection’ usb port on theWunderboard and to your computer.2. If your computer asks for a driver, cancel itand download and install the ‘Virtual ComPort (VCP)’ drivers from the website below:http://www.ftdichip.com/Drivers/VCP.htm3. Once installed, download and install aTerminal program. We recommendTermite. It can be found at:http://www.compuphase.com/software termite.htm4. Once everything is installed, connect yourWunderboard as described in step 1. Giveyou

the Java into byte code and then run it with the Java virtual machine. Open a command line and change to the directory where your class (program) is saved. Type the following two commands: javac HelloWorld.java java HelloWorld Installing Java (Linux) and Writing your First Program We will be running Java from the command