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超类

网络superclass; Supertype; java.lang.Object

超类

网络释义

超类

superclass

超类(SuperClass) ：用java术语来讲,被继承的类称为超类(SuperClass)，也有叫做父类，继承的类称为子类。面向对象编程的 …

Supertype

描述实体之间的关系用子类（SUBTYPE）和超类（SUPERTYPE）说明的办法。一个实体可以是某一实体的子类，也可以是某 …

java.lang.Object

但是在编译中， javac 将发现超类 ( java.lang.Object ) 没有名为 hasCode() 的方法可以覆盖。因此，编译器将报错，如图 1 中 …

superclasses

定义一个类，你必须指定被定义类的一个或多个父类(parent classes)或超类(superclasses)。关于超类的比如，每个人都有父母…

supertypes

...系（ternary relationships）、超类（supertypes）、子类（subtypes）等。

superclass subclass abstract class

suppose中文 ... matinee 日戏... superclass subclass abstract class 超类子类抽象类 suppose 假定 ...

CRegionElement

矩形、圆角矩形、椭圆、多边形可抽象出区域超类(CRegionElement)。颜色充填、晕线充填、点状符号充填可抽象出充填超类(…

例句：

An attempt was made to reuse an existing method name from a superclass , and the signatures did not match .

试图重用超类现有的方法名称，而签名不匹配。

Methods that use references to superclasses must be able to use objects of subclasses without knowing it.

使用了对超类的引用的方法必须能在不知道子类具体类型的情况下使用子类对象。

Because a superclass is not referenced as frequently as a sublcass the names do not have to be as concise .

由于超类不会像子类那样被频繁引用，对子类的命名就不必考虑太多简洁的因素。

However, the subclass leaves the concrete class as is and does not attempt to instantiate the superclass .

子类没有对具体的方法做改变，也没有试图实例化超类。

It is also very easy to modify superclasses and add new subclasses because you merely need to modify or add one table .

修改超类和添加新的子类也非常容易，因为您只需要修改或添加一张表。

According to this principle , the ability to substitute a subclass object for a superclass object is characteristic of good design .

此原则表明，子类对象对超类对象的替代能力是优秀设计的重要标志。

So before an object is created , another object of the same class or of its superclass must be constructed .

所以在创建对象之前，必须构造相同类或其超类的另一个对象。

After the @implementation keyword , we see the name of the class (Employee) and its superclass.

在 @implementation 关键字后面，我们看到了类名（Employee ）及其超类。

That article is the single best resource that I've seen for understanding how the superclass works .

那篇文章是我见过的关于理解超类如何运行的最好的资源。

Table per-class : (Optional ) Each concrete subclass is mapped to a table and contains columns for super class attributes .

按类表：（可选）每个具体的子类映射到一个表，并且包含超类属性的列。

It is normal for a standard class to be a super class .

标准类作为超类是正常的。

You can never cast objects of sibling classes ( sharing the same parent ), even with an explicit cast.

你永远不可能转化具有同一个超类的类的对象，即使是刻意转化。（请提意见）

Make sure that Constructors from superclass is checked and that the superclass is java. lang. Exception (Figure 46 ).

确保选中了 Constructorsfromsuperclass ，并且超类是 java.lang.Exception （图 46 ）。

Classes usually constitute a taxonomic hierarchy (a subclass -superclass hierarchy ).

类通常包括一个分类层次（一个子类 -超类层次）。

Notice that because both of the extracted methods use the number member variable , it is dragged into the superclass .

注意，因为两个提取方法都使用 number 成员变量，所以要涉及到超类。

After a script has been created , it retains the reference to the default superclass as its own helper superclass.

当创建完一个脚本以后，它保留着默认超类的参考，就好象是它自己的助手参考一样。

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