Eclipse - where does the (id=nn) come from in the show view variables pane

[jim kobe]

Hi,

I am trying to understand the information presented by Eclipse when debugging a Java class.

In the "Variables" panel a variable will be listed, such as "newName". To the right will be something like " "Sue" (id=72) "

I understand "Sue" is the string assigned to the variable newName.

Where does the "72" come from? It seems to be an Object Identifier. Is that correct?

A two part question: How is the id used? By java compiler or JVM? How can a human use such a number?


Important, where can I find such an answer?

I tried the Eclipse Documentation and Google with no success.

Thank you very much,

jim
Lviv, Ukraine

[Radovan Vukovic]

This should be object Identifier. according to this doc it is used by VM

How you can use this, well depending what you want...
E.g. create a breakpoint using the condition System.identityHashCode(object) == number