10. public class Bar { 
11.static void foo（int...x） { 
12. // insert code here 
13. } 
14. } 
Which two code fragments， inserted independently at line 12， will allow the class to compile？（）

11. public interface Status { 
12. /* insert code here */ int MY_VALUE = 10； 
13. } 
Which three are valid on line 12？（）

Given the following code：    
1） class Parent {    
2） private String name；    
3） public Parent（）{}    
4） } 
5） public class Child extends Parent {    
6） private String department； 
7） public Child（） {} 
8） public String getValue（）{ return name； }    
9） public static void main（String arg[]） {    
10） Parent p = new Parent（）；    
11） } 
12） } 
Which line will cause error？（）   

class Parent {    
String one， two； 
public Parent（String a， String b）{    
one = a；    
two = b；    } 
public void print（）{ System.out.println（one）； }    } 
public class Child extends Parent {    
public Child（String a， String b）{    
super（a，b）；    
} 
public void print（）{ 
System.out.println（one + " to " + two）；    
} 
public static void main（String arg[]）{   
 Parent p = new Parent（"south"， "north"）；    
Parent t = new Child（"east"， "west"）；    
p.print（）；    
t.print（）；    
}    
} 
Which of the following is correct？（）

public class Parent {    
int change（） {…}    
} 
class Child extends Parent { 
   } 
Which methods can be added into class Child？（）    

String s= "hello"；    
String t = "hello"； 
char c[] = {’h’，’e’，’l’，’l’，’o’} ；    
Which return true？（）