While debugging in Intellij IDEA, I can see objects with {TYPE@SOME_NUMBER}, e.g. as can be seen in the picture below {PersistentBag@8507}.
What is SOME_NUMBER, e.g. 8507? How does Intellij calculates it?
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1https://stackoverflow.com/questions/2322903/deciphering-variable-information-while-debugging-java – binoternary May 26 '17 at 15:29
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That's basically just a memory reference. In general, you'll never need to do anything with it and can just ignore it.
I've never actually seen a scenario where you actually need to care about that number. Since Java manages memory for you, it won't really ever matter.
About the only thing I can think of that would matter would be you can use that number to determine if a value in two places is the same value, or just look the same.
For example, if you pass an object as a value to do different classes, they would both show the same @SOME_NUMBER, meaning they're the same object.
samanime
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