A example using Proxy.newProxyInstance in Java

ProxyNewProxyInstanceUsageSimple.java

public class Application {

    private interface Interface1 {
        void method1();
    }

    private interface Interface2 {
        void method2();
    }

    public static void main(String[] args) {
        Object o = Proxy.newProxyInstance(Thread.currentThread().getContextClassLoader(),
                new Class[]{Interface1.class, Interface2.class}, (proxy, method, args1) -> {

                    System.out.println(method.getDeclaringClass());
                    System.out.println(method.getName());

                    return null;
                });

        ((Interface1) o).method1();
        ((Interface2) o).method2();
    }
}