單項(xiàng)選擇題

public class Employee{      
private String name; 
public Employee(String name){          
this.name = name;      } 
public void display(){        
System.out.print(name);      } } 
public class Manager extends Employee{      
private String department; 
public Manager(String name,String department){         
super(name); 
this.department = department; 
} 
public void display(){ 
System.out.println(super.display()+”,”+department);      } } 
執(zhí)行語(yǔ)句new Manager(“smith”,”SALES”)后程序的輸出是哪項(xiàng)?() 

A. smith,SALES
B. null,SALES
C. smith,null
D. null,null
E. 編譯錯(cuò)誤

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