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判断题
建造者模式中,每一个builder都相对独立,而与其他的builder无关
A
对
B
错
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阅读以下说明和Java代码,回答问题[说明]在某些系统中,存在非常复杂的对象,可以采用循序渐进的方式进行组合将小对象组合,成复杂的对象。以下实例展示了Builder(生成器)模式。该实例用来建立“文件”,文件内容包括:一个标题、一串字符以及一些有项目符号的项目。Builder类规定组成文件的方法,Director类利用这个方法产生一份具体的文件。图6-1显示了各个类间的关系。以下是Java语言实现,能够正确编译通过。[Java代码]//Builder. java文件public (1) class Builder {public abstract void makeTitle(String title);public abstract void makeString(String str);public abstract void makeItems(String[] items);public abstract Object getResult();}//Director. java文件public class Director{private (2) builder;public Director(Builder builder){this. builder = builder;}public Object construct(){builder.makeTitle("Greeting");builder.makeString("从早上到白天结束");builder.makeItems(new String[]{"早安", "午安",});builder.makeString("到了晚上");builder.makeItems(new String[]("晚安", "好梦",});return builder.getResult();}}//TextBuilder.java文件public class TextBuilder (3) Builder{private StringBuffer buffer = new StringBuffer();public void makeTitle(String title){buffer.append("『" + title + "』"\n\n");}public void makeString(String str){buffer.append('■' + str + "\n\n ");}public void makeItems(String[] items){for(int i = 0; i (4) ; i++){buffer.append('·' + items[i] + "\n");}buffer.append("\n");}public Object getResult(){return buffer.toString();}}//Main.java文件public class Main {public static void main(String[] args) {Director director = new Director(new TextBuilder());String result = (String)director. (5) ;System.out.println(result);
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阅读下列说明和 C++代码,将应填入(n)处的字句写在答题纸的对应栏内。
【说明】
生成器( Builder)模式的意图是将一个复杂对象的构建与它的表示分离,使得同样的构建过程可以创建不同的表示。图 5-1 所示为其类图。
【C++代码】
#include
#include
using namespace std;
class Product {
private:? ??
string partA, partB;
public:
Product() {?? }
? ? ?void
setPartA(const string}
???? void
setPartB(const string}
//? 其余代码省略
};
class Builder {
public:
??????? (1)?? ;
virtual void buildPartB()=0;
??????? (2)?? ;
};
class ConcreteBuilder1 : public Builder {
private:
Product*?? product;
public:
ConcreteBuilder1() {product = new Product();???? }
??? void
buildPartA() {????? (3)???? ("Component A"); }
??? void
buildPartB() {????? (4)???? ("Component B"); }
Product* getResult() { return product; }
//? 其余代码省略
};
class ConcreteBuilder2 : public Builder {? ??
/*??? 代码省略??? */
};
class Director {
private:?
Builder* builder;
public:? ?
Director(Builder* pBuilder) { builder= pBuilder;}
???? void
construct() {
? ? ? ? ? ? ? (5)???? ;? ? ?
//? 其余代码省略
????? }
//? 其余代码省略
};
int main() {
Director* director1 = new Director(new ConcreteBuilder1());?
director1->construct();? ?
delete director1;? ??
return 0;
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下图所示为(44)设计模式,属于(45)设计模式,适用于(46)。
A.代理(Proxy)
B.生成器(Builder)
C.组合(Composite)
D.观察者(Observer)
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阅读下列说明和 Java 代码,将应填入(n)处的字句写在答题纸的对应栏内。
【说明】
生成器( Builder)模式的意图是将一个复杂对象的构建与它的表示分离,使得同样的构建过程可以创建不同的表示。图 6-1 所示为其类图。
阅读下列说明和C++代码,将应填入(n)处的字句写在答题纸的对应栏内。
【说明】
???? 生成器(Builder)模式的意图是将一个复杂对象的构建与它的表示分离,使得同样的构建过程可以创建不同的表示。图5-1所示为其类图。
?
【C++代码】
#include
#include
using namespace std;
class Product {
private:?
string partA, partB;
public:?
Product() {?? }? ?
void setPartA(const string}
???? void setPartB(const string}? ?
//? 其余代码省略
};
class Builder {
public:? ? ??
(1)??
;?
virtual void buildPartB()=0;? ? ?
(2)??
;
};
class ConcreteBuilder1 : public Builder {
private:?
Product*?? product;
public:
ConcreteBuilder1() {product = new Product();???? }
void buildPartA() {????? (3)???? ("Component
A"); }?
void buildPartB() {????? (4)???? ("Component
B"); }??
Product* getResult() { return product; }
//? 其余代码省略
};
class ConcreteBuilder2 : public Builder {? ??? ? ? ?
/*??? 代码省略??? */
};
class Director {
private:? ??
Builder* builder;
public:??
Director(Builder* pBuilder) { builder= pBuilder;}? ??
void construct() {
????????????????? (5)???? ;
?????????????? //? 其余代码省略? ?
}??
//? 其余代码省略
};
int main() {? ? ??
Director* director1 = new Director(new ConcreteBuilder1());? ?
director1->construct();? ? ??
delete director1;? ? ?
return 0;
【Java代码】
import jav(6)A.util.*;
class Product {? ? ? ?
private String partA;? ? ? ?
private String partB;? ? ? ??
public Product() {}? ? ??
public void setPartA(String s) { partA = s; }? ? ? ?
public void setPartB(String s) { partB = s; }
}
interface Builder {? ?
public?????? (1)???? ;? ??
public void buildPartB();? ? ??
public?????? (2)???? ;
}
class ConcreteBuilder1 implements Builder {? ? ? ?
private Product product;? ? ? ?
public ConcreteBuilder1() { product = new Product();?? }? ? ? ??
public void buildPartA() {????????
(3)??
("Component A"); }
public void buildPartB() {???? ????(4)?? ("Component B"); }? ? ??
public Product getResult() { return product;}
}
class ConcreteBuilder2 implements Builder {?? ? ? ? ?
//? 代码省略
}
class Director {? ? ? ?
private Builder builder;? ? ? ?
public Director(Builder builder) {this.builder = builder; }
public void construct() {
? ? ? ? ? ? ? ? ? (5)???? ;
? ? ? ? ? ? ? //? 代码省略? ? ??
}
}
class Test {? ? ??
public static void main(String[] args) {
???????????????? Director director1 = new
Director(new ConcreteBuilder1());
???????????????? director1.construct();? ? ? ??
}
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Procedure builder. B
Query builder. C
Schema builder. D
Form builder. E
Project builder. F
Transactional builder.
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简单工厂模式(Simple Factory)B
抽象工厂模式(Abstract Factory)C
建造者模式(Builder)D
单例模式(Singleton)
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Document doc=DocumentBuilderFactory.parse(“my.xml”);B
Document doc=DocumentBuilder.parse(“my.xml”);C
DocumentBuilderFactory dbf= DocumentBuilderFactory.newInstance(); DocumentBuilder builder=dbf.newDocumentBuilder(); Document doc=builder.parse(“my.xml”);D
DocumentBuilder builder=new DocumentBuilder(); Document doc=builder.parse(“my.xml”);
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