Is there a Java reflection utility to do a deep comparison of two objects?

java comparison equals
Uri picture Uri · Sep 19, 2009 · Viewed 81.9k times · Source

I'm trying to write unit tests for a variety of clone() operations inside a large project and I'm wondering if there is an existing class somewhere that is capable of taking two objects of the same type, doing a deep comparison, and saying if they're identical or not?

Answer

Wolfgang picture Wolfgang · Sep 19, 2009

Unitils has this functionality:

Equality assertion through reflection, with different options like ignoring Java default/null values and ignoring order of collections

Related questions

Why Java does not see that Integers are equal?

I have integers that are supposed to be equal (and I verify it by output). But in my if condition Java does not see these variables to have the same value. I have the following code: if (pay[0]==point[0] &&…

Read More
Compare two objects with a check for null

Is there a method in the JDK that compares two objects for equality, accounting for nulls? Something like this: public static boolean equals(Object o1, Object o2) { if (o1 == null) { return o2 == null; // Two nulls are considered equal } else if (…

Read More
When "" == s is false but "".equals( s ) is true

EDIT Thanks for the prompt responses. Please see what the real question is. I have made it bold this time. I do understand the difference between == and .equals. So, that's not my question (I actually added some context for that) …

Read More