Java에서 JAR 파일 내용을 효율적으로 추출하는 방법은 무엇입니까?

import java.util.jar.JarFile;
import java.util.Enumeration;
import java.io.*;

public class ExtractJar {

  public static void main(String[] args) throws IOException {
    String jarFile = "path/to/your.jar";
    String destDir = "path/to/destination";

    JarFile jar = new JarFile(jarFile);
    Enumeration<JarEntry> entries = jar.entries();

    while (entries.hasMoreElements()) {
      JarEntry entry = entries.nextElement();

      if (entry.isDirectory()) {
        new File(destDir + File.separator + entry.getName()).mkdir();
        continue;
      }

      InputStream is = jar.getInputStream(entry);
      FileOutputStream fos = new FileOutputStream(new File(destDir + File.separator + entry.getName()));

      while (is.available() > 0) {
        fos.write(is.read());
      }

      is.close();
      fos.close();
    }

    jar.close();
  }
}