发表新帖
发表新帖

Passing in “any” class type into a java method

后端 未结
关注
3 2026
我寻月下人不归
我寻月下人不归 2021-01-26 11:21

Okay say I have a class: 

public class ExampleClass() {
    public void exampleClassMethod(ArrayList abcdefg> arrList) {
        ....
3条回答
  • 时光取名叫无心
    时光取名叫无心 (楼主)
    2021-01-26 11:58

    Use List to accept any List object in the method.

    public void exampleClassMethod2(List custClassArg) {
    ....
}



    use List instead of ArrayList as it give more flexibility.
    


    Also you can use List if all the other customClasses extends from a base type.
    
    
    
             
    
                                                        
    
            
            
    
              
                
                0
              
                   
                
               讨论(0)
              
                                                  
              
              
    
                          
             
       
          
              
    
                                       
    

    

                
    
                         
          
                              			
        
        
        
    
          
    
            
            
    
              
              
    
            
    


                                 
              
    
            
    
                          
    

        
         
    
                
                
    
                  
                
    
                
    
                   看不清?
                
    
              
    
                                  
    
                    
   
                 
             
              
    提交回复
    
            
    
          
    
        
    
      
       
      
    
    
    
          
 
     
 
    
        
    热议问题