How to run Java program with tester library using BlueJ IDE.

 

á      Download and install BlueJ.

á      Decide where you will keep your work and define two folders/directories, one for the project workspace and one for the libraries you will use. We will name them BlueJWorkspace and BlueJjars.

á      Start BlueJ. In the Project menu select New Project. Make a new folder for this project and name it Project1. Select Create.

á      Your workspace should look like this:

 

 

á      We first have to tell BlueJ where to find the tester library. Select Preferences in the BlueJ menu, then select Libraries in the top bar.

á      Click on Add, then navigate to the folder that has tester.jar in it, and add it.

 

 

á      The Preferences panel now should look like this. Do not worry about the fact that it says ÔNot loadedÕ.

 

 

á      Click on the New Class button. Name your class Examples. BlueJ has its own ideas about what the Java file skeleton should look like and will show you:

á      We will learn about public and private, and about writing the documentation in the fancy Javadoc style at some point much later. So, for now, select the whole file and delete it. Then copy and paste the Examples.java file into this space:

 

 

á      Hit the Compile button on the top left. Your program should not signal any errors. You can now run the program.

á      Right-click on the Examples box, then select void main(String[] argv():

 

 

 

á      Select OK in the dialog that opens:

 

 

á      The results appear in the Terminal Window.

á      You can edit your file, add new files that represent other classes, as long as the public static void main(String[] argv) is defined in the Examples class, you run it the same way.