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Converting a TreeSet to ArrayList?

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花落未央
花落未央 2020-12-17 08:52

I have a TreeSet which contains > 100k objects. I have another method which requires ArrayList as an param.

Is there any way I can accomplish this without iterating

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  • 庸人自扰
    庸人自扰 (楼主)
    2020-12-17 09:14

    ArrayList has a convenience method addAll that fits the bill nicely:

    final Set set = ...
List list = new ArrayList(someBigNum);
list.addAll(set);

    
    
             
    
                                                        
    
            
            
    
              
                
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