多項(xiàng)選擇題

AnInterface is an interface.
AnAdapter0 is a non-abstract， non-final class with a zero argument constructor.
AnAdapter1 is a non-abstract， non-final class without a zero argument constructor， but with a constructor that takes one int argument.
Which two construct an anonymous inner class？（）

A. AnAdapter1 aa=new AnAdapter1（）{}
B.AnAdapter0 aa=new AnAdapter0（）{}
C. AnAdapter0 aa=new AnAdapter0（5）{}
D. AnAdapter1 aa=new AnAdapter1（5）{}
E.AnInterface a1=new AnInterface（5）{}

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單項(xiàng)選擇題

class A {
public byte getNumber （） {
return 1；
}
}
class B extends A {
public short getNumber（） {
return 2；
}
public static void main （String args） {
B b = new B （）；
System.out.printIn（b.getNumber（））
}
}
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 14 causes compilation to fail.
E. Compilation succeeds but an exception is thrown at line 14.

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

class A { public byte getNumber （） { return 1； } } class B extends A { public short getNumber（） { return 2； } public static void main （String args） { B b = new B （）； System.out.printIn（b.getNumber（）） } } What is the result？（）

Which statement about static inner classes is true？（）

class A {
public byte getNumber （） {
return 1；
}
}
class B extends A {
public short getNumber（） {
return 2；
}
public static void main （String args） {
B b = new B （）；
System.out.printIn（b.getNumber（））
}
}
What is the result？（）

Which statement about static inner classes is true？（）