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Am I casting incorrectly or is this unavoidable?


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  #1  
Old October 9th, 2012, 04:33 AM
Stefan1 Stefan1 is offline
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Am I casting incorrectly or is this unavoidable?
Hi,
I have a tree where each node is of type Node. Some nodes are LeafNodes which is a subclass of Node. Other nodes are InternalNodes which is also a subclass of Node.
java Code:
Original - java Code 
  1. if( !isLeafNode( node ) ){
  2.     InternalNode n = (InternalNode) node;
  3.      ......
  4. }

The compiler gives a warning for the line "InternalNode n = (InternalNode) node;". The warning is:
Quote:
Type safety: Unchecked cast from Node to InternalNode

Is there something I should/can do to prevent this warning from occurring? Or is this unavoidable and I can just suppress the warning?

Thanks in advance,
Stefan1
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  #2  
Old October 9th, 2012, 05:21 AM
Corpsecreate Corpsecreate is offline
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Im not a good candidate to answer this question but have you tried putting the code in a try/catch block?
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Old October 9th, 2012, 09:25 AM
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NormR NormR is offline
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How is node defined? What relationship does it have to InternalNode?
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