JUnit AssertEquals失败

import static org.junit.Assert.assertEquals;

System.out.println("obj1 name = " + obj1.getName());
System.out.println("obj1 value = " + (obj1.getvalue() == null ? "null" : "not null"));
System.out.println("obj2 name = " + obj2.getName());
System.out.println("obj2 value = " + (obj2.getvalue() == null ? "null" : "not null"));

assertEquals(obj2, obj1);

产量

obj1 name = DC2
obj1 value = null
obj2 name = DC2
obj2 value = null

java.lang.AssertionError: 
Expected :com.gms.contract.myClass.inventory.MyClass@795ce9b5
Actual   :com.gms.contract.myClass.inventory.MyClass@280cb0b4

assertEquals不应该按值比较吗?? 但也许我错了?。。。

谢谢!