don't add annotations to inner classes.

generators/java/support/add-java-annotation.spec.ts

@@ -102,6 +102,28 @@ import com.mycompany.myapp.Foo;
 @Foo(bar="baz")
 public class MyTest {}`);
       });
+
+      it('should not add the annotation to inner class', () => {
+        expect(
+          addJavaAnnotation(
+            `package com.mycompany.myapp;
+
+public class MyTest {
+    public static class Inner {
+
+    }
+}`,
+            { annotation: 'Foo' },
+          ),
+        ).toBe(`package com.mycompany.myapp;
+
+@Foo
+public class MyTest {
+    public static class Inner {
+
+    }
+}`);
+      });
     });
   });
 });

generators/java/support/add-java-annotation.ts

@@ -53,7 +53,7 @@ const addJavaAnnotationToContent = (content: string, annotationDef: JavaAnnotati
       throw new Error(`Annotation already exists: ${annotation} replace is not implemented yet.`);
     }
     // add the annotation before class or interface
-    content = content.replace(/\n([a-w ]*(class|@?interface|enum) )/g, `\n@${annotationToAdd}\n$1`);
+    content = content.replace(/\n([a-w ]*(class|@?interface|enum) )/, `\n@${annotationToAdd}\n$1`);
   }
   return content;
 };