54 lines
1.3 KiB
Java
54 lines
1.3 KiB
Java
// reflection/SimpleProxyDemo.java
|
|
// (c)2021 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
|
|
*/
|