Reference to assertEquals is ambiguous when running a unit test

In my application

`CategoryDao` is a `interface`, `Category` is a model `class` 

My code is

CategoryTestCase.java

package com.binod.onlineshopping.category.test;
import com.binod.onlineshopping.category.dao.CategoryDao;
import com.binod.onlineshopping.category.model.Category;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import org.testng.annotations.BeforeClass;
import org.testng.annotations.Test;

import static org.testng.AssertJUnit.assertEquals;

/**
 * Created by binod on 7/13/17.
 */
public class CategoryTestCase {

    private static AnnotationConfigApplicationContext context;
    private static CategoryDao categoryDao;
    private Category category;

    @BeforeClass
    public static void init() {

        context = new AnnotationConfigApplicationContext();
        context.refresh();
        categoryDao = (CategoryDao) context.getBean("categoryDao");
    }

    @Test
    public void addCategory(){
        category=new Category();
        category.setCname("Television");
        category.setCdescription("TV is the product");
        category.setImageUrl("c_Tv.png");
     assertEquals("sucessfully inserted..",true,categoryDao.addCategory(category));
    }

}

The error is :

Error:(34, 6) java: reference to assertEquals is ambiguous
 both method assertEquals(java.lang.String,boolean,boolean) in org.testng.AssertJUnit and method assertEquals(java.lang.String,java.lang.Object,java.lang.Object) in org.testng.AssertJUnit match

I am trying to junit test in my springmvc with hibernate project.I am trying to test in my insert module.but it gives a above error. I saw many tutorial and references but i am unable to handle that error. Thanks in advance.