chore(java): simplify generated codec name (#1850)

## What does this PR do?

simplify generated codec name

before:

![image](https://github.com/user-attachments/assets/bbb51fe7-23d1-405a-89c4-e4d0c4c8ab60)

after:

![image](https://github.com/user-attachments/assets/f3540884-89e7-4a81-9d04-d3dff66ff379)

## Related issues

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## Does this PR introduce any user-facing change?

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issue](https://github.com/apache/fury/issues/new/choose) describing the
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- [ ] Does this PR introduce any public API change?
- [ ] Does this PR introduce any binary protocol compatibility change?

## Benchmark

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java/fury-core/src/main/java/org/apache/fury/builder/AccessorHelper.java

@@ -27,6 +27,7 @@
 import java.util.Collection;
 import java.util.Map;
 import java.util.WeakHashMap;
+import java.util.concurrent.ConcurrentHashMap;
 import org.apache.fury.codegen.CodeGenerator;
 import org.apache.fury.codegen.CodegenContext;
 import org.apache.fury.codegen.CompileUnit;
@@ -53,11 +54,18 @@ public class AccessorHelper {
   private static final String OBJ_NAME = "obj";
   private static final String FIELD_VALUE = "fieldValue";
 
+  // Must be static to be shared across the whole process life.
+  private static final Map<String, Integer> idGenerator = new ConcurrentHashMap<>();
+
   public static String accessorClassName(Class<?> beanClass) {
-    String name =
-        ReflectionUtils.getClassNameWithoutPackage(beanClass)
-            + "FuryAccessor_"
-            + CodeGenerator.getClassUniqueId(beanClass);
+    String key = CodeGenerator.getClassUniqueId(beanClass);
+    Integer id = idGenerator.get(key);
+    if (id == null) {
+      synchronized (idGenerator) {
+        id = idGenerator.computeIfAbsent(key, k -> idGenerator.size());
+      }
+    }
+    String name = ReflectionUtils.getClassNameWithoutPackage(beanClass) + "FuryAccessor_" + id;
     return name.replace("$", "_");
   }
 

java/fury-core/src/main/java/org/apache/fury/builder/BaseObjectCodecBuilder.java

@@ -56,6 +56,7 @@
 import java.util.Map;
 import java.util.Set;
 import java.util.StringJoiner;
+import java.util.concurrent.ConcurrentHashMap;
 import java.util.function.Function;
 import java.util.function.Supplier;
 import org.apache.fury.Fury;
@@ -157,6 +158,9 @@ public BaseObjectCodecBuilder(TypeRef<?> beanType, Fury fury, Class<?> parentSer
     jitCallbackUpdateFields = new HashMap<>();
   }
 
+  // Must be static to be shared across the whole process life.
+  private static final Map<String, Map<String, Integer>> idGenerator = new ConcurrentHashMap<>();
+
   public String codecClassName(Class<?> beanClass) {
     String name = ReflectionUtils.getClassNameWithoutPackage(beanClass).replace("$", "_");
     StringBuilder nameBuilder = new StringBuilder(name);
@@ -167,12 +171,17 @@ public String codecClassName(Class<?> beanClass) {
     } else {
       nameBuilder.append("Fury");
     }
-    nameBuilder.append(codecSuffix()).append("Codec");
-    nameBuilder.append('_').append(fury.getConfig().getConfigHash());
-    String classUniqueId = CodeGenerator.getClassUniqueId(beanClass);
-    if (StringUtils.isNotBlank(classUniqueId)) {
-      nameBuilder.append('_').append(classUniqueId);
+    nameBuilder.append("Codec").append(codecSuffix());
+    Map<String, Integer> subGenerator =
+        idGenerator.computeIfAbsent(nameBuilder.toString(), k -> new ConcurrentHashMap<>());
+    String key = fury.getConfig().getConfigHash() + "_" + CodeGenerator.getClassUniqueId(beanClass);
+    Integer id = subGenerator.get(key);
+    if (id == null) {
+      synchronized (subGenerator) {
+        id = subGenerator.computeIfAbsent(key, k -> subGenerator.size());
+      }
     }
+    nameBuilder.append('_').append(id);
     return nameBuilder.toString();
   }
 

java/fury-core/src/main/java/org/apache/fury/builder/MetaSharedCodecBuilder.java

@@ -22,7 +22,9 @@
 import static org.apache.fury.builder.Generated.GeneratedMetaSharedSerializer.SERIALIZER_FIELD_NAME;
 
 import java.util.Collection;
+import java.util.Map;
 import java.util.SortedMap;
+import java.util.concurrent.ConcurrentHashMap;
 import org.apache.fury.Fury;
 import org.apache.fury.builder.Generated.GeneratedMetaSharedSerializer;
 import org.apache.fury.codegen.CodeGenerator;
@@ -86,11 +88,20 @@ public MetaSharedCodecBuilder(TypeRef<?> beanType, Fury fury, ClassDef classDef)
         new ObjectCodecOptimizer(beanClass, grouper, !fury.isBasicTypesRefIgnored(), ctx);
   }
 
+  // Must be static to be shared across the whole process life.
+  private static final Map<Long, Integer> idGenerator = new ConcurrentHashMap<>();
+
   @Override
   protected String codecSuffix() {
     // For every class def sent from different peer, if the class def are different, then
     // a new serializer needs being generated.
-    return "MetaShared" + classDef.getId();
+    Integer id = idGenerator.get(classDef.getId());
+    if (id == null) {
+      synchronized (idGenerator) {
+        id = idGenerator.computeIfAbsent(classDef.getId(), k -> idGenerator.size());
+      }
+    }
+    return "MetaShared" + id;
   }
 
   @Override