Take care of PR comments

Author: lijamie98

examples/src/main/java/network/lightsail/CheckStellarAssetContract.java

@@ -12,11 +12,13 @@
 import org.stellar.sdk.xdr.LedgerKey.LedgerKeyContractData;
 
 /**
- * This example shows how to check the existence of the SAC (Stellar Asset Contract) of a class asset.
+ * This example shows how to check the existence of the SAC (Stellar Asset Contract) of a class
+ * asset.
  */
 public class CheckStellarAssetContract {
   public static void main(String[] args) throws IOException {
     String rpcServerUrl = "https://soroban-testnet.stellar.org:443";
+    Network network = Network.TESTNET;
     Asset assetNative = Asset.createNativeAsset();
     Asset assetUSDC =
         Asset.createNonNativeAsset(
@@ -26,28 +28,18 @@ public static void main(String[] args) throws IOException {
             "UNKN", "GDQOE23CFSUMSVQK4Y5JHPPYK73VYCNHZHA7ENKCV37P6SUEO6XQBKPP");
 
     try (SorobanServer sorobanServer = new SorobanServer(rpcServerUrl)) {
-      System.out.println(
-          "The SAC ID of the asset ["
-              + assetNative
-              + "] is "
-              + getContractData(sorobanServer, assetNative));
-      System.out.println(
-          "The SAC ID of the asset ["
-              + assetUSDC
-              + "] is "
-              + getContractData(sorobanServer, assetNative));
-      System.out.println(
-          "The SAC ID of the asset ["
-              + assetUSDC
-              + "] is unknown ("
-              + getContractData(sorobanServer, assetUnknown)
-              + ")");
+      for (Asset asset : List.of(assetNative, assetUSDC, assetUnknown)) {
+        String contractId = asset.getContractId(network);
+        System.out.printf(
+            "The contract id for %s is %s, it is %s\n",
+            asset,
+            contractId,
+            isContractDeployed(sorobanServer, contractId) ? "deployed" : "not deployed");
+      }
     }
   }
 
-  public static String getContractData(SorobanServer sorobanServer, Asset asset)
-      throws IOException {
-    String contractId = asset.getContractId(Network.TESTNET);
+  public static boolean isContractDeployed(SorobanServer sorobanServer, String contractId) {
     List<LedgerKey> ledgerKeys =
         List.of(
             LedgerKey.builder()
@@ -60,13 +52,6 @@ public static String getContractData(SorobanServer sorobanServer, Asset asset)
                         .build())
                 .build());
     GetLedgerEntriesResponse response = sorobanServer.getLedgerEntries(ledgerKeys);
-    if (response.getEntries() != null && !response.getEntries().isEmpty()) {
-      LedgerEntryData entryData =
-          LedgerEntryData.fromXdrBase64(response.getEntries().get(0).getXdr());
-      if (entryData.getContractData() == null) return null;
-      return entryData.getContractData().getContract().getContractId().toXdrBase64();
-    } else {
-      return null;
-    }
+    return response.getEntries() != null && !response.getEntries().isEmpty();
   }
 }

src/test/java/org/stellar/sdk/operations/InvokeHostFunctionOperationTest.java

@@ -292,10 +292,10 @@ public void testNotEqualsSource() {
   }
 
   @Test
-  public void testUploadContractWasmOperationBuilder() {
+  public void testInstallContractWasmOperationBuilder() {
     byte[] wasm = new byte[] {0x00, 0x01, 0x02, 0x03, 0x34, 0x45, 0x66, 0x46};
     InvokeHostFunctionOperation operation =
-        InvokeHostFunctionOperation.uploadContractWasmOperationBuilder(wasm).build();
+        InvokeHostFunctionOperation.installContractWasmOperationBuilder(wasm).build();
     HostFunction expectedFunction =
         HostFunction.builder()
             .discriminant(HostFunctionType.HOST_FUNCTION_TYPE_UPLOAD_CONTRACT_WASM)