Java SecureRandom .getInstance (String algorithm, Provider provider)

public static SecureRandom getInstance(String algorithm,    Provider provider)    throws NoSuchAlgorithmException

/*  ww  w.  ja v  a  2  s .c  o  m*/
import java.security.NoSuchAlgorithmException;
import java.security.Provider;
import java.security.SecureRandom;

public class Main {
  public static void main(String[] args) throws NoSuchAlgorithmException {
    int numBytes = (new Integer("1111")).intValue();

    SecureRandom srand = new SecureRandom(new byte[]{1,2,3,4});

    Provider provider = srand.getProvider();
    
    SecureRandom newRandom = SecureRandom.getInstance("SHA1PRNG",provider);
    
    
    System.out.println(provider.getName());
    
    byte[] bytes = new byte[numBytes];
    srand.nextBytes(bytes);
    System.out.println(bytes);
  }
}