What do you mean by "disappears entirely"? Can you just check for a null value? The reason I ask that is because if a session variable was never created and you try to access it you will get a null value. So setting it to null, then accessing it will return you the same value as if it never existed.
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What do you mean by
What do you mean by "disappears entirely"? Can you just check for a null value? The reason I ask that is because if a session variable was never created and you try to access it you will get a null value. So setting it to null, then accessing it will return you the same value as if it never existed.
He's right-- If you haven't
He's right-- If you haven't set a sessionVariable at all yet, then
session.getVariable("somethingUnset")will returnnullanyway.I can't think of anything functionally different about
session.setVariable("varName", null).