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Add object to ArrayList at specified index

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南笙 2020-11-30 18:59

I think it\'s a fairly simple question, but I can\'t figure out how to do this properly.

I\'ve got an empty arraylist:

ArrayList list =         


        
      
      
      

        

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                 遥遥无期 
              
              
    
                
                   遥遥无期
                                             
                
                
                (楼主)
            
              
                  
    
                2020-11-30 19:46
              
    

            
    
            
    
              
              

    I draw your attention to the ArrayList.add documentation, which says it throws    IndexOutOfBoundsException - if the index is out of range (index < 0 || index > size())
    


    Check the size() of your list before you call list.add(1, object1)
    
    
    
             
    
                                                        
    
            
    
            
    
              
                
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