超星 - 第13次作业

单选题

For the following code, which statement is not true?对于下面的代码，哪个语句是不正确的?public class Sphere{private double radius;public double x;private double y;private double z;}

A. x is available to code that is written outside the Circle class. x可用于在Circle类之外编写的代码
B. radius is not available to code written outside the Circle class. radius不能用于在Circle类之外编写的代码
C. radius, x, y, and z are called members of the Circle class. radius、x、y和z称为Circle类的成员
D. z is available to code that is written outside the Circle class. z可用于编写在Circle类之外的代码

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单选题

You should not define a class field that is dependent upon the values of other class fields: 你不应该定义一个依赖于其他类域值的类域:

A. in order to avoid having stale data 为了避免数据过时
B. because it is redundant 因为它是多余的
C. because it should be defined in another class 因为它应该在另一个类中定义
D. in order to keep it current 为了保持最新

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单选题

What does the following UML diagram entry mean?下面的UML图条目是什么意思?+ setHeight(h : double) : void

A. this is a public attribute named Height and is a double data type这是一个名为Height的公共属性，是double数据类型
B. this is a private method with no parameters and returns a double data type 这是一个没有参数的私有方法，返回一个double数据类型
C. this is a private attribute named Height and is a double data type 这是一个名为Height的私有属性，是一个double数据类型
D. this is a public method with a parameter of data type double and does not return a value这是一个公共方法，参数是数据类型double，没有返回值

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单选题

Methods that operate on an object's fields are called:操作于对象域中的方法被称为：

A. instance variables 实例变量
B. instance methods .实例方法
C. public methods 公共方法
D. private methods 私有方法

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单选题

The scope of a private instance field is:私有实例字段的范围是:

A. the instance methods of the same class 同一个类的实例方法
B. inside the class, but not inside any method 在类中，但不在任何方法中
C. inside the parentheses of a method header 方法头的括号内
D. the method in which they are defined 定义它们的方法

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单选题

A constructor:构造函数:

A. always accepts two arguments 总是接收两个参数
B. has return type of void 返回类型为void
C. has the same name as the class 具有与类相同的名称
D. always has an access specifier of private 总是有一个私有的访问说明符

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单选题

Which of the following statements will create a reference, str, to the String, “Hello, World”?哪个语句将创建对字符串“Hello, World”的引用str ?

A. String str = "Hello, World";
B. string str = "Hello, World";
C. String str = new "Hello, World";
D. str = "Hello, World";

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单选题

Two or more methods in a class may have the same name as long as:类中的两个或多个方法可能具有相同的名称，只要:

A. they have different return types 它们有不同的返回类型
B. they have different parameter lists 它们有不同的参数集合
C. they have different return types, but the same parameter list 它们有不同的返回类型，但是相同的参数列集合
D. you cannot have two methods with the same name 你不能有两个同名的方法

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单选题

A class specifies the __ and that a particular type of object has.类指的是具有特定类型的_和___的对象。

A. relationships; methods 关系;方法
B. fields; object names 字段;对象名称
C. fields; methods 字段;方法
D. relationships; object names 关系;对象名称

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单选题

This refers to the combining of data and code into a single object. 以下哪个指的是将数据和代码组合成一个对象。

A. Data hiding 数据隐藏
B. Abstraction 抽象
C. Object 对象
D. Encapsulation 封装

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For the following code, which statement is not true?对于下面的代码，哪个语句是不正确的?public class Sphere{private double radius;public double x;private double y;private double z;}

You should not define a class field that is dependent upon the values of other class fields: 你不应该定义一个依赖于其他类域值的类域:

What does the following UML diagram entry mean?下面的UML图条目是什么意思?+ setHeight(h : double) : void

Methods that operate on an object's fields are called:操作于对象域中的方法被称为：

The scope of a private instance field is:私有实例字段的范围是:

A constructor:构造函数:

Which of the following statements will create a reference, str, to the String, “Hello, World”?哪个语句将创建对字符串“Hello, World”的引用str ?

Two or more methods in a class may have the same name as long as:类中的两个或多个方法可能具有相同的名称，只要:

A class specifies the ________ and ________ that a particular type of object has.类指的是具有特定类型的_____和_____的对象。

This refers to the combining of data and code into a single object. 以下哪个指的是将数据和代码组合成一个对象。

A class specifies the __ and that a particular type of object has.类指的是具有特定类型的_和___的对象。