Using Java with Metrowerks CodeWarrior 6.0/6.1Ryan Thomson June 12, 2001

This document specifies the procedure for creating and setting up

Metrowerks CodeWarrior 6.0/6.1 for Java development. It is

suggested that the newest JDK (Java Development Kit) from Sun

Microsystems is used. At the time of this writing the current release

of the Sun JDK is Java 2 1 .3.

Using CodeWarrior for Java is much the same as for C++. To begin, startup

CodeWarrior and wait for the familiar greeting of the CodeWarrior menu:

You should first create your main Java file containing the source code of your

java program before beginning with a project. To accomplish this, select � File-

>New & � from the File menu.

This will bring a dialog box requesting the project o r file type you wish to

create. Click the � File � tab and select text file.

Type a name and location for your new Java file and click ok. Be sure that the

extension you are using is �.java � . This will bring up an empty text-editing

window.

Start with a simple java application such as � Howdy Partner! � . Type the

following code into the editor windows. Notice that the name of your class,

� Howdy � must later be the name of your � Java Target � . This will be further

explained further at the end of the handout.

You should now save the file by selecting, � File->Save � .

ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ

To create a new Java Console Application project, select � File->New & � from

the File menu.

This will bring up the project stationery for various projects styles and

programming languages. Choose � Java Stationery � then enter a project name

and directory.

After you have chosen a proper name and directory for your project, click the

� Ok � button to continue. This will bring up a box asking you for version type

of program you wish to create. Choose � JDK 1.3 ->Java Application � :

This will finalize the project selection phase and bring up the project window.

To remove the default file � TrivialApplication.java � , open the � Source �

directory. Then right click on � TrivialApplication.java � and select �Delete � .

After selecting � Delete � from the menu, you will be asked if you are sure you

want to de lete � TrivialApplication.java � from the project. Click � Ok � to

remove the file.

Next you want to add your Java source files to the project. Do this by selecting

the � Sources � directory in the project dialog box and clicking � Add files � from

the Project menu:

This selection will bring up a dialog box very similar to the standard �Open �

dialog box you see very often when using windows. Locate the Java file you

created at the start of this hand out and click � Add � :

This will add your Java file to the project.

To finalize your project, you must follow the next few steps so that the Java

Virtual Machine will run your code properly.

ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ

An Important Note about Java with CodeWarrior

When changing the name of the main class (class containing the

public static void main() function) you must also indicate this change

in the project settings dialog box. This option specifies which class is

the main class. This option must be specified as such for the project

to compile and run properly.

To open the project settings dialog box, click the � Targets � tab on

the project window. This will bring up two icons. One is labeled

� Java Application Release � and the other is labeled � Java

Application Debug � .

To access the project settings dialog box, double click on � Java

Application Release � . This will bring up the dialog box where you

will need to specify the change of the main class name.

To change the Java target settings, click on � Java Target � under the

Target Settings Panel to bring up the property sheet dealing with

target settings (including the option for specifying main class name).

The text field labeled � Main Class: � should now be changed the to

new name of the main class. It is important to note that Java and

CodeWarrior are both case sensitive. Any capitalization in the class

name must be identically copied to the text field.

Once this is complete, click Ok and repeat the process for � Java

Application Debug � in the project � Targets � tab.

You should now be able to compile and run your Java program with

a new main class name.

ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ