package com.foo;
public class BarServiceStub implements BarService {
    private final BarService barService;

    // The real remote proxy object is passed in through the constructor
    public (BarService barService) {
        this.barService = barService;
    }

    public String sayHello(String name) {
        // The following code is executed on the client. You can do local ThreadLocal caching on the client side, or verify parameters, etc.
        try {
            return barService.sayHello(name);
        } catch (Exception e) {
            // You can return the mock data.
            return "MockData";
        }
    }
}

public BarServiceStub(BarService barService)