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Is this legal syntax ? A d = new A().aob = new A();

 
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This is from the ExamLab Diagnostic Test for SCJP 5 by M Devaka Cooray

 
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Is this legal syntax ? A d = new A().aob = new A();



Yes, it equivalent to something like...



Henry
 
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I would like to add a line to Henry's code

 
Harry Henriques
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Ankit Garg wrote:I would like to add a line to Henry's code



Ankit, If you add temp2=null, then temp2.aob is referring to an instance of A that is floating on the heap, embedded in an object that is unreachable.

Harry
 
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Yes the object referenced by temp2 will be eligible for GC, but not temp2.aob as a new reference variable named "d" points to it as well...
 
Consider Paul's rocket mass heater.
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