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Java User’s Guide
12.6 Attention
112
s
wm_java_usersguide_v12
Page 112 of 123
2008-02-25
Confidential / Released
12.5.4
Sign a MIDlet
Use the tool “jadtool.jar” to sign a Java MIDlet. This program is in the folder “wkt\bin”.
12.6
Attention
The central element of Java Security is the
private key
. If Java Security is activated and you
lose the private key, then the
module is destroyed
. You have no chance of deactivating Java
Security, downloading of a new Midlet or starting any other operation concerning Java Security.
To prevent problems you are strongly advised to
secure the private key
.
java -jar jadtool.jar -addjarsig -jarfile helloworld.jar
-inputjad helloworld.jad
-outputjad helloworld.jad
-alias keyname -storepass keystorepassword
-keypass keypassword -keystore customer.ks
-encoding UTF-8