97免费在线观看视频,亚洲综合自拍网,黄色毛片免费观看,热久久综合网,免费看日产一区二区三区 狠狠操av,久久久涩涩涩,在线精品免费视频,人人插天天干,久久91精品国产91久久

單項(xiàng)選擇題

public class Pet{    
private String name;    
public Pet(){ 
System.out.print(1);    } 
public Pet(String name){       
System.out.print(2);    } } 
public class Dog extends Pet{    
public Dog(){ 
System.out.print(4);    } 
public Dog(String name){       
this(); 
System.out.print(3);    } } 
執(zhí)行new Dog(“棕熊”);后程序輸出是哪項(xiàng)?()  

A. 143
B. 423
C. 243
D. 1134

微信掃碼免費(fèi)搜題