public interface Interface {
	void doSomething();
	void somethingElse(String arg);
}

public class RealObject implements Interface {

	public void doSomething() {
		System.out.println("RealObject.doSomething()");
	}

	public void somethingElse(String arg) {
		System.out.println("RealObject.somethingElse("+arg+")");
	}
}
 

public class SimpleProxy implements Interface {
	
	private Interface proxied;
	
	public SimpleProxy(Interface proxied) {
		this.proxied = proxied;
	}
	
	public void doSomething() {
		System.out.println("SimpleProxy.doSomething()");
		proxied.doSomething();
		
	}
	
	public void somethingElse(String arg) {
		System.out.println("SimpleProxy.somethingElse("+arg+")");
		proxied.somethingElse(arg);
	}
}
 

/**
 * 動態代理 簡單例項
 */
public 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()));
	}
}