单项选择题
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.
相关考题
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多项选择题
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； } -
单项选择题
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. -
填空题
5. String foo = “base”； 6. foo.substring（0，3）； 7. foo.concat（“ket”） 8. Type the value of foo at line 8.（）
