how to select jar files to import myself.

[lovekang]

the system have a system-specific jar file named secu.jar having the same package structure in jce.jar from sun.
I have to use javax.crypto.cipher in jce.jar not secu.jar.
other part of my source code has to use javax.crypto.cipher in secu.jar.
so I have not to change the classpath of jar files.

is there a way which the jar file I use from my source?

 

[Diancecht]

I'd rename cipher in my application jar.

Otherwise, you'd need to play with classloaders, not a trivial issue.

Cheers,
Dian

 

[lovekang]

thanks.
I did it with classloader like the below.

public Class getCipherClass() {
Class c = null;
try {
URL urlA = new File("C:/Project/WEB-INF/lib/jce.jar").toURL();
URL[] urls = { urlA };
URLClassLoader ulc = new URLClassLoader(urls);
//
c = Class.forName("javax.crypto.Cipher", true, ulc);
} catch (Exception e) {
e.printStackTrace();
}
return c;
}

 

[Diancecht]

Nice you got it working, but be careful with that, it has a lot of issues.

Cheers,
Dian