Calling method from overridden Java class.

Question

I have a problem with calling an overriden method from java class. I have the following Java class:

public class Base
{
    int state = 0;
    public void called()
    {
        System.out.println("Hello, from called method: " + state);
    }

    public String getFirst() 
    {
       return "From Base;
     }

    //
    ...
    //
}

I use a groovy script to override getFirst() that so that it calls called()

def base = [ getFirst : {
    called()                    // this line has an error
    "From Second"
    }] as Base

base.getFirst()

How do I implement the this?

tim_yates · Accepted Answer · 2012-06-19 10:19:43Z

2

You can't use the proxy magic in that way... At the time of the Maps declaration, it doesn't know it's going to be a Proxy for Base, so it will throw the error

Why not just do it the normal way?

 def base = new Base() {
   public String getFirst() {
     called()
     "from me"
   }
 }

answered Jun 19, 2012 at 10:19

tim_yates

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1 Comment

yurii.pitomets Over a year ago

Hm, it works. Thanks, I googled over one hour and find that overriding in groovy implemented only with closures.

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