Java模擬Delegate

C#下面的Delegate可以讓方法傳遞方法，在Java下卻沒有類似的機制。如何在Java下面模擬出Delegate呢？使用反射試試。

貼代碼：

/** author:licunqing */
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

public class Delegate {
    private Class<?> c=null;
    private String method=null;
    private Class<?>[] paramsType=null;
    private Object[] params;
    
    public Delegate(Class<?> c,String method,Class<?>[] paramsType,Object[] params)
    {
        this.c=c;
        this.method=method;
        this.paramsType=paramsType;
        this.params=params;
    }
    
    public void invoke() throws NoSuchMethodException, SecurityException, InstantiationException, 
　　　　IllegalAccessException, IllegalArgumentException, InvocationTargetException
    {
        Method m = c.getDeclaredMethod(method, paramsType);
        Object o = c.newInstance();
        m.invoke(o, params);
    }
}