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                            ~~~
/**
 * 面向對象三大特征:封裝,繼承,多態
 * 封裝性在Java當中的體現:
 * 1.方法就是一種封裝
 * 2.關鍵字private也是一種封裝
 * 
 * 封裝就是將一些細節信息隱藏起來,對于外界不可見
 */
~~~
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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