OnJava8-Examples/patterns/ProxyDemo.java
2015-05-29 14:18:51 -07:00

45 lines
930 B
Java

//: patterns/ProxyDemo.java
// ©2015 MindView LLC: see Copyright.txt
// Simple demonstration of the Proxy pattern.
interface ProxyBase {
void f();
void g();
void h();
}
class Proxy implements ProxyBase {
private ProxyBase implementation;
public Proxy() {
implementation = new Implementation();
}
// Pass method calls to the implementation:
@Override
public void f() { implementation.f(); }
@Override
public void g() { implementation.g(); }
@Override
public void h() { implementation.h(); }
}
class Implementation implements ProxyBase {
public void f() {
System.out.println("Implementation.f()");
}
public void g() {
System.out.println("Implementation.g()");
}
public void h() {
System.out.println("Implementation.h()");
}
}
public class ProxyDemo {
public static void main(String args[]) {
Proxy p = new Proxy();
p.f();
p.g();
p.h();
}
} ///:~