静态代理（static Proxy)

IHello.java

package com.brj.springDemo;

public interface IHello {

public abstract void hello();

}

Hello.java

package com.brj.springDemo;

public class Hello implements IHello {

public void hello() {
  System.out.println("Hello!");
}

}

HelloProxy.java

package com.brj.springDemo;

public class HelloProxy implements IHello {

private Hello target;

public HelloProxy(Hello target){
  this.target = target;
}

public void hello() {
  System.out.println("write the log file..");
  target.hello();
  System.out.println("write the log file.... ");
}

}

Test.java

package com.brj.springDemo;

public class Test {

public static void main(String agrs[]){
  IHello proxy = new HelloProxy(new Hello());
  proxy.hello();
}

}

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