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How do I copy the contents of one ArrayList into another?

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傲寒
傲寒 2020-11-27 10:46

I have some data structures, and I would like to use one as a temporary, and another as not temporary.

ArrayList myObject = new ArrayList

        
      
      
      

        

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                 借酒劲吻你 
              
              
    
                
                   借酒劲吻你
                                             
                
                
                (楼主)
            
              
                  
    
                2020-11-27 11:21
              
    

            
    
            
    
              
              

    Straightforward way to make deep copy of original list is to add all element from one list to another list.
    


    ArrayList originalList = new ArrayList();
ArrayList duplicateList = new ArrayList();

for(Object o : originalList) {
    duplicateList.add(o);
}



    Now If you make any changes to originalList it will not impact duplicateList.
    
    
    
             
    
                                                        
    
            
            
    
              
                
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