java-etherscan-api

Etherscan Java API implementation.

Library supports all available EtherScan API calls for all available Ethereum Networks.

Dependency 🚀

Maven

<dependency>
    <groupId>com.github.goodforgod</groupId>
    <artifactId>java-etherscan-api</artifactId>
    <version>1.0.2</version>
</dependency>

Gradle

dependencies {
    compile 'com.github.goodforgod:java-etherscan-api:1.0.2'
}

Content

• Ethereum Networks
• Custom HttpClient
• API examples
  • Account
  • Block
  • Contract
  • Logs
  • Proxy
  • Stats
  • Transactions
  • Token
• Version History

Mainnet and Testnets

API support Ethereum: MAINNET, ROPSTEN, KOVAN, RINKEBY, GORLI, TOBALABA networks.

EtherScanApi api = new EtherScanApi(EthNetwork.MAINNET); // Default
EtherScanApi apiRinkeby = new EtherScanApi(EthNetwork.RINKEBY);
EtherScanApi apiRopsten = new EtherScanApi(EthNetwork.ROPSTEN);
EtherScanApi apiKovan = new EtherScanApi("YourApiKey", EthNetwork.KOVAN);

Custom HttpClient

In case you need to set custom timeout, custom headers or better implementation for HttpClient, just implement IHttpExecutor by your self or initialize it with your values.

int connectionTimeout = 10000;
int readTimeout = 7000;
 
Supplier<IHttpExecutor> supplier = () -> new HttpExecutor(connectionTimeout);
Supplier<IHttpExecutor> supplierFull = () -> new HttpExecutor(connectionTimeout, readTimeout);
 
EtherScanApi api = new EtherScanApi(EthNetwork.RINKEBY, supplier);
EtherScanApi apiWithKey = new EtherScanApi("YourApiKey", EthNetwork.MAINNET, supplierFull);

API Examples

You can read about all API methods on Etherscan

Library support all available EtherScan API.

You can use library with or without API key (Check API request\sec restrictions when used without API key).

Library will automatically limit requests up to 5 req/sec when used without key.

EtherScanApi api = new EtherScanApi();
EtherScanApi api = new EtherScanApi("YourApiKey");

Below are examples for each API category.

Account Api

Get Ether Balance for a single Address

EtherScanApi api = new EtherScanApi();
Balance balance = api.account().balance("0x8d4426f94e42f721C7116E81d6688cd935cB3b4F");

Block Api

Get uncles block for block height

EtherScanApi api = new EtherScanApi();
Optional<UncleBlock> uncles = api.block().uncles(200000);

Contract Api

Request contract ABI from verified codes

EtherScanApi api = new EtherScanApi();
Abi abi = api.contract().contractAbi("0xBB9bc244D798123fDe783fCc1C72d3Bb8C189413");

Logs Api

Get event logs for single topic

EtherScanApi api = new EtherScanApi();
LogQuery query = LogQueryBuilder.with("0x33990122638b9132ca29c723bdf037f1a891a70c")
           .topic("0xf63780e752c6a54a94fc52715dbc5518a3b4c3c2833d301a204226548a2a8545")
           .build();
List<Log> logs = api.logs().logs(query);

Get event logs for 3 topics with respectful operations

EtherScanApi api = new EtherScanApi();
LogQuery query = LogQueryBuilder.with("0x33990122638b9132ca29c723bdf037f1a891a70c", 379224, 400000)
        .topic("0xf63780e752c6a54a94fc52715dbc5518a3b4c3c2833d301a204226548a2a8545",
                "0x72657075746174696f6e00000000000000000000000000000000000000000000",
                "0x72657075746174696f6e00000000000000000000000000000000000000000000")
        .setOpTopic0_1(LogOp.AND)
        .setOpTopic0_2(LogOp.OR)
        .setOpTopic1_2(LogOp.AND)
        .build();
 
List<Log> logs = api.logs().logs(query);

Proxy Api

Get tx detailds with proxy endpoint

EtherScanApi api = new EtherScanApi(EthNetwork.MAINNET);
Optional<TxProxy> tx = api.proxy().tx("0x1e2910a262b1008d0616a0beb24c1a491d78771baa54a33e66065e03b1f46bc1");

Get block info with proxy endpoint

EtherScanApi api = new EtherScanApi(EthNetwork.MAINNET);
Optional<BlockProxy> block = api.proxy().block(15215);

Stats Api

Statistic about last price

EtherScanApi api = new EtherScanApi();
Price price = api.stats().lastPrice();

Transaction Api

Request receipt status for tx

EtherScanApi api = new EtherScanApi();
Optional<Boolean> status = api.txs().receiptStatus("0x513c1ba0bebf66436b5fed86ab668452b7805593c05073eb2d51d3a52f480a76");

Token Api

You can read about token API here

Token API methods migrated to Account & Stats respectfully.

Version History

1.0.2 - Minor http client improvements.

1.0.1 - Gorli & TOBALABA networks support.

1.0.0 - Initial project with all API functionality, for all available networks, with tests coverage for all cases.

License

This project is licensed under the MIT - see the LICENSE file for details.