單項(xiàng)選擇題

Which statement about static inner classes is true？（）

A. An anonymous class can be declared as static.
B. A static inner class cannot be a static member of the outer class.
C. A static inner class does not require an instance of the enclosing class.
D. Instance members of a static inner class can be referenced using the class name of the static inner class.

你可能感興趣的試題

多項(xiàng)選擇題

class BaseClass{
private float x= 1.0f；
protected void setVar （float f） {x = f；}
}
class SubClass extends BaseClass {
private float x = 2.0f；
//insert code here 16. }
Which two are valid examples of method overriding？（）

A. Void setVar（float f） {x = f；}
B. Public void setVar（int f） {x = f；}
C. Public void setVar（float f） {x = f；}
D. Public double setVar（float f） {x = f；}
E. Public final void setVar（float f） {x = f；}
F. Protected float setVar（） {x=3.0f； return 3.0f； }

單項(xiàng)選擇題

1. class A {
2. public int getNumber（int a） {
3. return a + 1；
4. }
5. }
6.
7. class B extends A {
8. public int getNumber （int a） {
9. return a + 2
10. }
11.
12. public static void main （String args[]） {
13. A a = new B（）；
14. System.out.printIn（a.getNumber（0））；
15. }
16. }
What is the result？（）

A. Compilation succeeds and 1 is printed.
B. Compilation succeeds and 2 is printed.
C. An error at line 8 causes compilation to fail.
D. An error at line 13 causes compilation to fail.
E. An error at line 14 causes compilation to fail.

Which statement about static inner classes is true？ （）

你可能感興趣的試題

class BaseClass{ private float x= 1.0f； protected void setVar （float f） {x = f；} } class SubClass extends BaseClass { private float x = 2.0f； //insert code here 16. } Which two are valid examples of method overriding？（）

Which statement about static inner classes is true？（）

class BaseClass{
private float x= 1.0f；
protected void setVar （float f） {x = f；}
}
class SubClass extends BaseClass {
private float x = 2.0f；
//insert code here 16. }
Which two are valid examples of method overriding？（）