import java.io.ByteArrayInputStream;
import java.io.FileInputStream;
import java.io.InputStream;
import java.util.jar.Manifest;
public class Main {
public static void main(String[] argv) throws Exception {
// Create a manifest from a file
InputStream fis = new FileInputStream("manifestfile");
Manifest manifest = new Manifest(fis);
// Construct a string version of a manifest
StringBuffer sbuf = new StringBuffer();
sbuf.append("Manifest-Version: 1.0\n");
sbuf.append("\n");
sbuf.append("Name: javax/swing/JScrollPane.class\n");
sbuf.append("Java-Bean: True\n");
// Convert the string to a input stream
InputStream is = new ByteArrayInputStream(sbuf.toString().getBytes("UTF-8"));
// Create the manifest
manifest = new Manifest(is);
}
}