add sdk examples to send transaction

docs/data/rpc/api-reference/methods/sendTransaction.mdx

@@ -4,5 +4,136 @@ description: Submits a transaction
 ---
 
 import { RpcMethod } from "@site/src/components/RpcMethod";
+import { CodeExample } from "@site/src/components/CodeExample";
 
 <RpcMethod method="sendTransaction" platform="soroban" />
+
+### SDK Guide
+
+The example above is sending a transaction using RPC methods directly. If you are using the Stellar SDK to build applications, you can use the native functions to get the same information.
+
+<br />
+<div>
+<CodeExample>
+
+```python
+# pip install --upgrade stellar-sdk
+from stellar_sdk import SorobanServer, soroban_rpc, Account, Asset, Keypair, Network, TransactionBuilder
+
+def send_transaction() -> soroban_rpc.SendTransactionResponse:
+    server = SorobanServer(server_url='https://soroban-testnet.stellar.org', client=None)
+
+    root_keypair = Keypair.from_secret(
+        "SXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
+    )
+    root_account = server.load_account("GBSBL6FBPX5UHKL4AZCPUU6PXKUBYMKRUN3L4YQ4V2CCWSE7YMN2HYPB")
+    contract_id = "CA3D5KRYM6CB7OWQ6TWYRR3Z4T7GNZLKERYNZGGA5SOAOPIFY6YQGAXE"
+    transaction = (
+        TransactionBuilder(
+            source_account=root_account,
+            network_passphrase=Network.TESTNET_NETWORK_PASSPHRASE,
+            base_fee=100,
+        )
+        .append_invoke_contract_function_op(contract_id,"increment")
+         # mark this transaction as valid only for the next 30 seconds
+        .set_timeout(30)
+        .build()
+    )
+    transaction.sign(root_keypair)
+    response = server.send_transaction(transaction)
+    return response
+
+response = send_transaction()
+
+print("status", response.status)
+print("hash:", response.hash);
+print("status:", response.status);
+print("errorResultXdr:", response.error_result_xdr);
+```
+
+```js
+// yarn add @stellar/stellar-sdk
+import * as StellarSdk from "@stellar/stellar-sdk";
+
+import { Server } from "@stellar/stellar-sdk/rpc";
+const server = new Server("https://soroban-testnet.stellar.org");
+
+async function sendTransaction() {
+  try {
+    const contractId =
+      "CA3D5KRYM6CB7OWQ6TWYRR3Z4T7GNZLKERYNZGGA5SOAOPIFY6YQGAXE";
+    const sourceSecretKey =
+      "SXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX";
+    const contract = new StellarSdk.Contract(contractId);
+    const accountId =
+      "GBSBL6FBPX5UHKL4AZCPUU6PXKUBYMKRUN3L4YQ4V2CCWSE7YMN2HYPB";
+    const account = await server.getAccount(accountId);
+    const fee = StellarSdk.BASE_FEE;
+    const transaction = new StellarSdk.TransactionBuilder(account, { fee })
+      .setNetworkPassphrase(StellarSdk.Networks.TESTNET)
+      .setTimeout(30)
+      .addOperation(contract.call("increment"))
+      .build();
+
+    const sourceKeypair = StellarSdk.Keypair.fromSecret(sourceSecretKey);
+    transaction.sign(sourceKeypair);
+
+    server.sendTransaction(transaction).then((result) => {
+      console.log("hash:", result.hash);
+      console.log("status:", result.status);
+      console.log("errorResultXdr:", result.errorResultXdr);
+    });
+  } catch (error) {
+    console.error("Error fetching transaction:", error);
+  }
+}
+
+sendTransaction();
+```
+
+```java
+// implementation 'network.lightsail:stellar-sdk:0.44.0'
+import org.stellar.sdk.AccountConverter;
+import org.stellar.sdk.InvokeHostFunctionOperation;
+import org.stellar.sdk.KeyPair;
+import org.stellar.sdk.Network;
+import org.stellar.sdk.SorobanServer;
+import org.stellar.sdk.Transaction;
+import org.stellar.sdk.TransactionBuilder;
+import org.stellar.sdk.TransactionBuilderAccount;
+import org.stellar.sdk.responses.sorobanrpc.SendTransactionResponse;
+
+public class SendTransactionExample {
+
+    public static void main(String[] args) {
+        SorobanServer server = new SorobanServer("https://soroban-testnet.stellar.org");
+        try {
+            TransactionBuilderAccount account = server.getAccount("GBSBL6FBPX5UHKL4AZCPUU6PXKUBYMKRUN3L4YQ4V2CCWSE7YMN2HYPB");
+            KeyPair sourceKeyPair = KeyPair.fromSecretSeed("SXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX");
+            String contractId = "CA3D5KRYM6CB7OWQ6TWYRR3Z4T7GNZLKERYNZGGA5SOAOPIFY6YQGAXE";
+            InvokeHostFunctionOperation operation =  InvokeHostFunctionOperation.invokeContractFunctionOperationBuilder(contractId, "increment", null).build();
+            // Build the transaction
+            Transaction transaction = new TransactionBuilder(AccountConverter.enableMuxed(), account, Network.TESTNET)
+                    .addOperation(operation)
+                    .build();
+
+            // Sign the transaction
+            transaction.sign(sourceKeyPair);
+
+            // Send the transaction using the SorobanServer
+            SendTransactionResponse response = server.sendTransaction(transaction);
+            System.out.println(response.getStatus());
+            System.out.println(response.getHash());
+            System.out.println(response.getLatestLedger());
+            System.out.println(response.getLatestLedgerCloseTime());
+        } catch (Exception e) {
+            System.err.println("An error has occurred:");
+            e.printStackTrace();
+        }
+    }
+}
+
+```
+
+</CodeExample>
+</div>