构建者模式-第一种方式

/**
* 建造者
*/
public abstract class Builder {
// 地基
public abstract void buildA();
// 钢筋工程
public abstract void buildB();
// 粉刷
public abstract void buildC();

public abstract Product getProduct();
}

public class ConcreteBuilder extends Builder {
private Product product;
public ConcreteBuilder() {
this.product = new Product();
}
@Override
public void buildA() {
product.setBuildA("地基");
}
@Override
public void buildB() {
product.setBuildB("钢筋工程");
}
@Override
public void buildC() {
product.setBuildC("粉刷");
}
@Override
public Product getProduct() {
return product;
}
}

public class Product {
private String buildA;
private String buildB;
private String buildC;
public String getBuildA() {
return buildA;
}
public void setBuildA(String buildA) {
this.buildA = buildA;
}
public String getBuildB() {
return buildB;
}
public void setBuildB(String buildB) {
this.buildB = buildB;
}
public String getBuildC() {
return buildC;
}
public void setBuildC(String buildC) {
this.buildC = buildC;
}
@Override
public String toString() {
return "Product{" +
"buildA='" + buildA + '\'' +
", buildB='" + buildB + '\'' +
", buildC='" + buildC + '\'' +
'}';
}
}
/**
* 指挥者
*/
public class Director {

public Product create(Builder builder) {
builder.buildA();
builder.buildB();
builder.buildC();
return builder.getProduct();
}
}

public class TestBuilder {
public static void main(String[] args) {
Director director = new Director();
Product product = director.create(new ConcreteBuilder());
System.out.println(product); // Product{buildA='地基', buildB='钢筋工程', buildC='粉刷'}
}
}

posted @ 2022-02-25 13:34  剑阁丶神灯  阅读(35)  评论(0)    收藏  举报