How does dynamic proxies impact performance or memory usage?

Dynamic Proxies, Java, Performance, Memory Usage

Understanding the impact of dynamic proxies on performance and memory usage in Java applications is crucial for optimizing resource management.


      // Example of using dynamic proxies in Java
      import java.lang.reflect.InvocationHandler;
      import java.lang.reflect.Method;
      import java.lang.reflect.Proxy;

      interface HelloWorld {
          void greet(String name);
      }

      class HelloWorldImpl implements HelloWorld {
          public void greet(String name) {
              System.out.println("Hello, " + name);
          }
      }

      class DynamicProxyHandler implements InvocationHandler {
          private Object target;

          public DynamicProxyHandler(Object target) {
              this.target = target;
          }

          @Override
          public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
              System.out.println("Before method: " + method.getName());
              Object result = method.invoke(target, args);
              System.out.println("After method: " + method.getName());
              return result;
          }
      }

      public class DynamicProxyExample {
          public static void main(String[] args) {
              HelloWorld helloWorld = new HelloWorldImpl();
              HelloWorld proxy = (HelloWorld) Proxy.newProxyInstance(
                  helloWorld.getClass().getClassLoader(),
                  helloWorld.getClass().getInterfaces(),
                  new DynamicProxyHandler(helloWorld)
              );
              proxy.greet("World");
          }
      }

How does dynamic proxies impact performance or memory usage?

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How does dynamic proxies impact performance or memory usage?

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