feat(json-rpc/web3ClientVersion): use java.specification.version for …

…jdk version retrieval

  - use `java.specification.version` instead of parsing `java.version`
  - ensure consistent version reporting across different Java releases(jdk10+)

framework/src/main/java/org/tron/core/services/jsonrpc/TronJsonRpcImpl.java

@@ -24,7 +24,6 @@
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.ExecutionException;
 import java.util.concurrent.ExecutorService;
-import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 import lombok.Getter;
 import lombok.extern.slf4j.Slf4j;
@@ -226,15 +225,11 @@ public static void handleLogsFilter(LogsFilterCapsule logsFilterCapsule) {
 
   @Override
   public String web3ClientVersion() {
-    Pattern shortVersion = Pattern.compile("(\\d\\.\\d).*");
-    Matcher matcher = shortVersion.matcher(System.getProperty("java.version"));
-    matcher.matches();
-
     return String.join("/", Arrays.asList(
         "TRON",
         "v" + Version.getVersion(),
         System.getProperty("os.name"),
-        "Java" + matcher.group(1)));
+        "Java" + System.getProperty("java.specification.version")));
   }
 
   @Override