// typeinfo/SimpleProxyDemo.java

// (c)2020 MindView LLC: see Copyright.txt

// We make no guarantees that this code is fit for any purpose.

// Visit http://OnJava8.com for more book information.

interface Interface {

void doSomething();

void somethingElse(String arg);

}

class RealObject implements Interface {

@Override

public void doSomething() {

System.out.println("doSomething");

}

@Override

public void somethingElse(String arg) {

System.out.println("somethingElse " + arg);

}

}

class SimpleProxy implements Interface {

private Interface proxied;

SimpleProxy(Interface proxied) {

this.proxied = proxied;

}

@Override

public void doSomething() {

System.out.println("SimpleProxy doSomething");

proxied.doSomething();

}

@Override

public void somethingElse(String arg) {

System.out.println(

"SimpleProxy somethingElse " + arg);

proxied.somethingElse(arg);

}

}

class SimpleProxyDemo {

public static void consumer(Interface iface) {

iface.doSomething();

iface.somethingElse("bonobo");

}

public static void main(String[] args) {

consumer(new RealObject());

consumer(new SimpleProxy(new RealObject()));

}

}

/* Output:

doSomething

somethingElse bonobo

SimpleProxy doSomething

doSomething

SimpleProxy somethingElse bonobo

somethingElse bonobo

*/