Cannot create transaction from JSON

[tzclucian]

First of all I have to mention this is my first day playing with this.

I've started by running the tests, I get the following error:

java.lang.NullPointerException
	at com.authenteq.BigchaindbTransaction.buildTransactionJson(BigchaindbTransaction.java:124)
	at com.authenteq.BigchaindbTransaction.<init>(BigchaindbTransaction.java:59)
	at com.authenteq.BigchaindbTransactionTest.transactionGenerationTest(BigchaindbTransactionTest.java:141)

Same happens when I try to create a transaction:

        byte[] publicKey = Base58.decode("where-do-i-get-this-public-key-from?");
        EdDSAParameterSpec keySpecs = EdDSANamedCurveTable.getByName("Ed25519");
        EdDSAPublicKeySpec spec = new EdDSAPublicKeySpec(publicKey, keySpecs);
        EdDSAPublicKey edDSAPublicKey = new EdDSAPublicKey(spec);

        JSONObject data = new JSONObject(aDummyHashMap);
        JSONObject metaData = new JSONObject(anotherDummyHashMap);

        BigchaindbTransaction tx = new BigchaindbTransaction(data, metadata, edDSAPublicKey);

        bigchaindbConnection.send(tx, new TransactionCallbackImpl());

I get the same error:

Exception in thread "main" java.lang.NullPointerException
	at com.authenteq.BigchaindbTransaction.buildTransactionJson(BigchaindbTransaction.java:124)
	at com.authenteq.BigchaindbTransaction.<init>(BigchaindbTransaction.java:59)

Any ideas on what's happening?

[bohdanbezp]

Fixed. Sorry, there was a typo in the code

[bohdanbezp]

Added key generation example to the readme.

[tzclucian]

Thank you very much! 😃