單項(xiàng)選擇題

package foo；
public class Outer {
public static class Inner {
}
}
Which statement is true？（）

A. Compilation fails.
B. An instance of the Inner class can be constructed with “new Outer.Inner（）”.
C. An instance of the Inner class cannot be constructed outside of package foo.
D. An instance of the Inner class can be constructed only from within the Outer class.
E. From within the package foo， and instance of the Inner class can be constructed with “new Inner（）”.

你可能感興趣的試題

單項(xiàng)選擇題

class A {
public A（） {
System.out.println（“hello from a”）；
}
}
class B extends A {
public B （） {
System.out.println（“hello from b”）；
super（）；
}
}
public class Test {
public static void main（String args[]） {
A a = new B（）；
}
}
What is the result when main is executed？（）

A. Compilation fails.
B. hello from a
C. hello from b
D. hello from b hello from a
E. hello from a hello from b

多項(xiàng)選擇題

Which two are benefits of fully encapsulating a class？（）

A. Performance of class methods is improved.
B. Implementation details of the class are hidden.
C. Access modifiers can be omitted on class data members.
D. Code that uses the encapsulation class can access data members directly.
E. Internal operation of the class can be modified without impacting clients of that class.

日韩欧美亚洲 _ 欧美亚洲一区 _ 日本亚洲欧美 _ 亚洲精品欧美 国产白袜脚足J棉袜在线观看_亚洲熟妇av一区二区三区_久久天天躁狠狠躁夜_精品众筹模特私拍在线

package foo； public class Outer { public static class Inner { } } Which statement is true？（）

你可能感興趣的試題

Which two are benefits of fully encapsulating a class？（）

日韩欧美亚洲 _ 欧美亚洲一区 _ 日本亚洲欧美 _ 亚洲精品欧美国产白袜脚足J棉袜在线观看_亚洲熟妇av一区二区三区_久久天天躁狠狠躁夜_精品众筹模特私拍在线

package foo；
public class Outer {
public static class Inner {
}
}
Which statement is true？（）

Which two are benefits of fully encapsulating a class？（）