Extract Jar file pragmatically with Groovy

JarExtractor.groovy

/*
Original Java Code from here:
https://stackoverflow.com/questions/1529611/how-to-write-a-java-program-which-can-extract-a-jar-file-and-store-its-data-in-s
*/

import java.util.jar.*

def jar = new JarFile("path/to/MyLib.jar")
def jarFile = new File(jar.name)
def distDir = "${jarFile.parent+File.separator}"
def libName = jarFile.name.with {it.take(it.lastIndexOf('.'))}
new File("${distDir+libName}").with {
	if (!it.exists()) it.mkdir()
}
distDir += libName+File.separator
for (JarEntry file in jar.entries()){
	def f = new File("${distDir+file.name}")
	if (file.isDirectory()){
		f.mkdir()
		continue
	}
	def is = jar.getInputStream(file)
	f.withOutputStream { def stream ->
		while (is.available()>0)
			stream.write(is.read())
	}
	is.close()
}
jar.close()