Trouble encrypting correctly with AES

[Magus]

Hi. I'm trying to get JCE to work with the following example using AES in ECB mode (yes, ECB shouldn't be used, but it's what I'm supposed to use): given a clear text String represented by the bytes (in hex) 546578746F2070617261207465737465 and a key 6573736173656E686165686672616361, the program is supposed to provide the encrypted bytes A506A19333F306AC2C62CBE931963AE7. I used an online encryption service to check for myself if the above is true, and it is. However, I just can't get it to work right in Java:

import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;

public class AESTest {
    public static String asHex(byte buf[]) {
        StringBuffer strbuf = new StringBuffer(buf.length * 2);
	int i;

	for (i = 0; i < buf.length; i++) {
	    if (((int) buf[i] & 0xff) < 0x10) {
	        strbuf.append("0");
            }

            strbuf.append(Long.toString((int) buf[i] & 0xff, 16));
        }

        return strbuf.toString();
    }

    public static void main(String[] args) throws Exception {
        String keyString = "Texto para teste";
	// 546578746F2070617261207465737465 (Hex)
	byte[] key = keyString.getBytes("UTF-8");
	System.out.println(asHex(key).toUpperCase());

	String clearText = "essasenhaehfraca";
	// ZXNzYXNlbmhhZWhmcmFjYQ== (Base64)
	// 6573736173656E686165686672616361 (Hex)
	byte[] clear = clearText.getBytes("UTF-8");
	System.out.println(asHex(clear).toUpperCase());

	SecretKeySpec skeySpec = new SecretKeySpec(key, "AES");
	// PKCS5Padding or NoPadding
	Cipher cipher = Cipher.getInstance("AES/ECB/NoPadding");
	cipher.init(Cipher.ENCRYPT_MODE, skeySpec);

	byte[] encrypted = cipher.doFinal(clear);
	System.out.println(asHex(encrypted).toUpperCase());
    }
}

All examples I found generate a key instead of using a static one. Well, I need to use that specific key.

What am I doing wrong? Thank you very much!