import java.util.zip.*
import java.nio.channels.*


ZipOutputStream zipFile = new ZipOutputStream(new FileOutputStream('testme.zip'))
zipFile.putNextEntry(new ZipEntry('testme.txt'))
zipFile.write('Hello World!'.bytes)
zipFile.write('one\n'.bytes)
zipFile.write('two\n'.bytes)

zipFile.closeEntry()
zipFile.close()