Java Utililty Methods Key Pair Create

KeyPairGenerator generator = null;
SecureRandom secureRandom = null;
try {
    generator = KeyPairGenerator.getInstance(CIPHER_ALGORITHM);
} catch (NoSuchAlgorithmException e) {
    throw new RuntimeException("Could not generate key", e);
try {
...

try {
    KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance(keyPairAlgorithm, provider);
    SecureRandom secureRandom = SecureRandom.getInstance(secureAlgorithm);
    keyPairGenerator.initialize(1024, secureRandom);
    synchronized (lockObject) {
        LAST_GENERATED_KEY_PAIR = keyPairGenerator.generateKeyPair();
        return LAST_GENERATED_KEY_PAIR;
} catch (Exception e) {
    throw new RuntimeException(e);

KeyPairGenerator kpGen = KeyPairGenerator.getInstance(algorithm);
SecureRandom random = SecureRandom.getInstance("SHA1PRNG");
kpGen.initialize(keylen, random);
return kpGen.generateKeyPair();

KeyPair keyPair = null;
try {
    final KeyPairGenerator keyGen = KeyPairGenerator.getInstance(algorithmModePad);
    keyGen.initialize(keySize);
    keyPair = keyGen.generateKeyPair();
} catch (Exception e) {
    e.printStackTrace();
return keyPair;

KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance(KEY_ALGORTHM);
keyPairGenerator.initialize(bit);
KeyPair keyPair = keyPairGenerator.generateKeyPair();
return keyPair;

KeyPairGenerator generator = KeyPairGenerator.getInstance(KEYGEN_ALGORITHM);
SecureRandom secureRandom = SecureRandom.getInstance(SECURE_RANDOM_ALGORITHM);
generator.initialize(keySize, secureRandom);
return generator.generateKeyPair();

KeyPairGenerator generator = KeyPairGenerator.getInstance("RSA", providerName);
generator.initialize(keySize);
return generator.generateKeyPair();

KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("RSA");
keyPairGenerator.initialize(keySize);
return keyPairGenerator.genKeyPair();

KeyPairGenerator generator = KeyPairGenerator.getInstance(ALGORITHM_SIGNATURE);
generator.initialize(keySize);
return generator.generateKeyPair();

KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("RSA");
keyPairGenerator.initialize(keysize);
return keyPairGenerator.generateKeyPair();