When Is The Object Eligible For Garbage Collection?

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The object will not become a candidate for garbage collection until all references to it are discarded. Java objects are assigned by reference so when you had

   classObject = myObject;

You assigned another reference to the same object on the heap. So this line

   myObject = null;

Only gets rid of one reference. To make myObject a candidate for garbage collection, you have to have

  classObject = null;

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