gradle - exclude files from a jar.

gistfile1.txt

jar {

	manifest {
		attributes "Implementation-Title": "Gradle Quickstart"
		attributes "Implementation-Version": version
		attributes "Main-Class" : "com.ti.specteam.programs.Application"
	}
	
	// remove the security files (from mail.jar / activation.jar) so that the jar will be executable.
	
	doFirst { 
		from (configurations.runtime.resolve().collect { it.isDirectory() ? it : zipTree(it) }) {
			exclude 'META-INF/MANIFEST.MF'
			exclude 'META-INF/*.SF'
			exclude 'META-INF/*.DSA'
			exclude 'META-INF/*.RSA'
		}
	}
}