1. J2ME WTK
Command Line
Cornelius Koo – 2005
cornelius.mellino@gmail.com

2. First Step
• Make sure the PATH environment variable
pointing to C:WTK20bin.

3. Compilation
1. Make sure these directory are exists :
tmpclasses – to hold unverified class
classes – to hold verified class
2. Syntax : javac [option] –bootclasspath
{j2mewtk.dir}libmidpapi.zip <files>

4. Compilation
[option] :
-d <output directory>
<files> :
list of source files separated by spaces

5. Compilation

6. Preverifying
• Syntax :
preverify [options] <files | directories>

7. Preverifying
<files | directory>
a list of one or more files or directory
separated by spaces
-classpath <classpath>
Specify the directories of the JAR file
(separated by semicolon) from which the
class are loaded.

8. Preverifying
-d <output directory>
output directory where the verified files will
be saved, this directory must be specified.

9. Preverifying

10. Packaging
1. Creating manifest file, see MIDP
presentation slide.
2. Syntax :
jar cfm <file> <manifest>
-C <class_directory> .
<resource_directory>

11. Packaging
<file>
File JAR to create
<manifest>
Manifest file for the MIDlets
<class_directory>
The directory containing application’s classes
<resource_directory>
The directory containing application’s resources

12. Packaging

13. Packaging
• Creating JAD file manually, please refer to
MIDP presentation slide.

14. Running Emulator
• emulator [options]

15. Running Emulator
-help
-version
-Xquery
Print device information on the standard
output stream and exit immediately.

16. Running Emulator

17. Reference
• WTK User Guide. SUN Microsystem,
2003.