建造者模式 生成器模式 创建型 设计模式(五)详解程序员

package builder; 
public interface MainBoard { 
String desc(); 
}

package builder; 
public class DellMainBoard implements MainBoard { 
@Override 
public String desc() { 
return "DELL mainBoard"; 
} 
}

package builder; 
public class AsusMainBoard implements MainBoard { 
@Override 
public String desc() { 
return "ASUS mainBoard"; 
} 
}

package builder; 
public interface DisplayDevice { 
String Desc(); 
}

package builder; 
public class DellDisplayDevice implements DisplayDevice { 
@Override 
public String Desc() { 
return "DELL display device"; 
} 
}

package builder; 
public class AsusDisplayDevice implements DisplayDevice { 
@Override 
public String Desc() { 
return "ASUS display device"; 
} 
}

package builder; 
public interface Creator { 
MainBoard createMainBoard(); 
DisplayDevice createDisplayDevice(); 
}

package builder; 
public class ConcreateCreatorDell implements Creator { 
@Override 
public MainBoard createMainBoard() { 
return new DellMainBoard(); 
} 
@Override 
public DisplayDevice createDisplayDevice() { 
return new DellDisplayDevice(); 
} 
}

package builder; 
public class ConcreateCreatorAsus implements Creator { 
@Override 
public MainBoard createMainBoard() { 
return new AsusMainBoard(); 
} 
 
@Override 
public DisplayDevice createDisplayDevice() { 
return new AsusDisplayDevice(); 
} 
}

package builder; 
public class AssembleComputer { 
Creator creator; 
AssembleComputer(Creator creator){ 
this.creator = creator; 
} 
 
public Computer getComputer(){ 
Computer computer = new Computer(); 
MainBoard mainBoard = creator.createMainBoard(); 
DisplayDevice displayDevice = creator.createDisplayDevice(); 
computer.setMainBoard(mainBoard); 
computer.setDisplayDevice(displayDevice); 
return computer; 
} 
}

package builder; 
public class AssembleComputerRefactor { 
CreatorRefactor creatorRefactor; 
AssembleComputerRefactor(CreatorRefactor creatorRefactor){ 
this.creatorRefactor = creatorRefactor; 
} 
 
public Computer getComputer(){ 
creatorRefactor.assembleMainBoard(); 
creatorRefactor.assembleDisplayDevice(); 
return creatorRefactor.getComputer(); 
} 
}

package buildPattern; 
public interface Builder { 
void buildPart1(); 
void buildPart2(); 
Product buildProduct(); 
}

package buildPattern; 
  
public class ConcreateBuilder implements Builder { 
private Product product = new Product(); 
  
@Override 
public void buildPart1() { 
//... 
} 
  
@Override 
public void buildPart2() { 
//... 
} 
  
@Override 
public Product buildProduct() { 
return product; 
} 
}

package buildPattern; 
public class Product { 
}

package buildPattern; 
  
public class Director { 
  
private Builder builder; 
  
Director(Builder builder) { 
this.builder = builder; 
} 
  
public Product getProduct() { 
builder.buildPart1(); 
builder.buildPart2(); 
return builder.buildProduct(); 
} 
} 

package simplebuilder; 
  
/** 
* Created by noteless on 2018/10/17. 
* Description:假定有一个MyObject类,有7个属性前面两个v1 和 v2 是必选,其余可选 
* 
* @author noteless 
*/ 
public class MyObject { 
  
private int v1;//必选 
private int v2;//必选 
private int v3;//可选 
private int v4;//可选 
private int v5;//可选 
private int v6;//可选 
private int v7;//可选 
  
private static class Builder { 
  
private int v1; 
private int v2; 
  
private int v3 = 0; 
private int v4 = 0; 
private int v5 = 0; 
private int v6 = 0; 
private int v7 = 0; 
  
public Builder(int v1, int v2) { 
this.v1 = v1; 
this.v2 = v2; 
} 
  
public Builder setV3(int v3) { 
this.v3 = v3; 
return this; 
} 
  
public Builder setV4(int v4) { 
this.v4 = v4; 
return this; 
} 
  
public Builder setV5(int v5) { 
this.v5 = v5; 
return this; 
} 
  
public Builder setV6(int v6) { 
this.v6 = v6; 
return this; 
} 
  
public Builder setV7(int v7) { 
this.v7 = v7; 
return this; 
} 
  
public MyObject build() { 
return new MyObject(this); 
} 
} 
  
private MyObject(Builder builder) { 
v1 = builder.v1; 
v2 = builder.v2; 
v3 = builder.v3; 
v4 = builder.v4; 
v5 = builder.v5; 
v6 = builder.v6; 
v7 = builder.v7; 
} 
  
@Override 
public String toString() { 
final StringBuilder sb = new StringBuilder("MyObject{"); 
sb.append("v1=").append(v1); 
sb.append(", v2=").append(v2); 
sb.append(", v3=").append(v3); 
sb.append(", v4=").append(v4); 
sb.append(", v5=").append(v5); 
sb.append(", v6=").append(v6); 
sb.append(", v7=").append(v7); 
sb.append('}'); 
return sb.toString(); 
} 
  
public static void main(String[] args) { 
  
MyObject my = new MyObject.Builder(1, 2). 
setV3(3).setV4(4).setV5(5).setV6(6).setV7(7).build(); 
System.out.println(my.toString()); 
} 
}