JETT Workshop - Java Basics

Exercise - setting up projects in Visual Studio .NET

make yourself a new directory (folder) and enter it
right click and save this Java application source file into your new directory: HelloWorldApp.java

VS .NET organizes files into solutions and projects
- a solution can hold one or more projects
  - a solution will use a subdirectory to hold projects
- a project contains the files necessary to generate a single program
  - each project will use a subdirectory to hold files

start VS .NET
create a new empty solution
- choose File>>New>>Blank Solution
- give the solution a name, for example, jett
- click browse and specify your directory
- you will now have a new subdirectory, jett, that has two solution files in it
create a new project
- choose File>>Add Project>>New Project
- click on Visual J# Projects
- scroll down and click on Empty Project
- give the project a name, for example, Hello
- click OK
- you now have a subdirectory jett\Hello that contains some project files
bring in an existing file
- choose File>>Add Existing Item
- browse to where you saved HelloWorldApp.java and select it
- you will see that it has been added under the Hello project
- if you look in the subdirectory, you will see it has been copied there
compile the Hello project
- choose Build>>Build Hello
execute the Hello project
- choose Debug>>Start without Debugging
create another new project
- choose File>>Add Project>>New Project
- click on Visual J# Projects
- scroll down and click on Empty Project
- give the project the name Purse
- click OK
- you now have a subdirectory jett\Purse that contains some project files
bring in an existing file
- right click and save Purse.java in the jett\Purse directory
- right click and save ConsoleInputTest.java too
- choose File>>Add Existing Item and add both of these files
- you should see that they have been added under the Purse project
choosing a project to compile
- click on Hello in the Solution Explorer
- choose Build, note that Build Hello is in the menu
- click on Purse in the Solution Explorer
- choose Build, note that Build Purse is in the menu
compile the Purse project
- click on the Purse project
- choose Build>>Build Purse
execute the Purse project
- right click on the Purse project
- choose Set As StartUp Project
- note that it is now in bold, and Hello is not in bold
- choose Debug>>Start without Debugging
you can set up as many projects as you like in the solution

Exercise - compiling and executing using vjc, the Visual J# compiler

make yourself a new directory (folder) and enter it
right click and save this Java application source file into your new directory: HelloWorldApp.java
open a command window and change to your directory
- start >>> programs >>> accessories >>> Command Prompt
- type
  cd <your directory name>
  to switch to your directory (replace the <...> with your directory name)
check to see that the source file is there and named correctly

type
dir
to get a directory listing - you should see HelloWorldApp.java listed

open a Visual Studio .NET Command Prompt
- start>>>Programs>>>Microsoft VS.NET>>>VS.NET Tools>>>VS.NET Command Prompt
- this will open a command window knows where to find the VS .NET tools
change to your directory
- type
  cd <your directory name>
  to switch to your directory (replace the <...> with your directory name)
compile the J# source

type
vjc HelloWorldApp.java
to compile the source
type
dir
to get a directory listing - you should see HelloWorldApp.exe listed

execute the program

type
HelloWorldApp
to execute the program
the output of the program will appear in the command window