class Parent {

public void count() { System.out.println(10%3);

} 

}

public class Child extends Parent{

public void count() {

System.out.println(10/3);

}

public static void main(String args[]) {

Parent p = new Child();

p.count();

} 

}

interface Parent{ public int count(int i); 

}

public class Test implements Parent { public int count(int i){

return i % 9; 

}

public static void main(String[] args){

int i = p.count(20);

} 

}

public class Test { 

public Test(){

System.out.println(“构造方法一被调用了”); 

}

public Test(int x){ 

this();

System.out.println(“构造方法二被调用了”); 

}

public Test(boolean b){ 

this(1);

System.out.println(“构造方法三被调用了”); 

}

public static void main(String[] args){ 

Test test = new Test(true);

} 

}

public class Test { 

public Test(){

System.out.println(“构造方法一被调用了”); 

}

public Test(int x){ 

this();

System.out.println(“构造方法二被调用了”); 

}

public Test(boolean b){ 

this(1);

System.out.println(“构造方法三被调用了”); 

}

public static void main(String[] args){ 

Test test = new Test(true);

} 

}

class Base {

public void method(){ 

System.out.print ("Base method");

} 

}

class Child extends Base{

public void methodB(){ 

System.out.print ("Child methodB");

} 

}

class Sample {

public static void main(String[] args) { Base base= new Child(); 

base.methodB();

} 

}

下列选项中的输出结果正确的是（） 

public class Test { public Test(){

System.out.println(“构造方法一被调用了”); 

}

public Test(int x){ this();

System.out.println(“构造方法二被调用了”); 

}

public Test(boolean b){ this(1);

System.out.println(“构造方法三被调用了”); 

}

public static void main(String[] args){ Test test = new Test(true);

} 

}

class Parent{ 

public String name;

public Parent(String pName){ this.name = pName;

} 

}

public class Test extends Parent { //第 1 行 

public Test(String Name){ //第 2 行 

name="hello"; //第 3 行

super("kitty"); //第 4 行 

}

}

下列选项说法正确的是（）。

class Employee;

class Manager extends Employee; 

class Director extends Employee; 

则以下语句能通过编译的是（）