構建模式將一個複雜的物件分離構建。

public interface TerrainBuilder {

    public ComplxBuilder buildWall();
    public ComplxBuilder buildFort();
    public AllBuilder build();

}

public class ComplxBuilder implements TerrainBuilder{

    AllBuilder allBuilder=new AllBuilder();
    @Override
    public ComplxBuilder buildWall() {
        allBuilder.setW(
 
new Wall(10,20,30,45));
        return this;
    }

    @Override
    public ComplxBuilder buildFort() {
        allBuilder.setF(new Fort(20,30,40,50));
        return this;
    }

    @Override
    public AllBuilder build() {
        return allBuilder;
    }


}


public class AllBuilder {

    private Wall w;
    
 
private Fort f;


    public Wall getW() {
        return w;
    }

    public void setW(Wall w) {
        this.w = w;
    }

    public Fort getF() {
        return f;
    }

    public void setF(Fort f) {
        this.f = f;
    }

    public AllBuilder() {
    }

    @Override
    public String toString() {
        
 
return "AllBuilder{" +
                "w=" + w +
                ", f=" + f +
                '}';
    }
}


public class Wall {

    private int x;
    private int y;
    private int z;
    private int v;

    public Wall() {
    }

    public int getX() {
        return x;
    }

    public void setX(int x) {
        this.x = x;
    }

    public int getY() {
        return y;
    }

    public void setY(int y) {
        this.y = y;
    }

    public int getZ() {
        return z;
    }

    public void setZ(int z) {
        this.z = z;
    }

    public int getV() {
        return v;
    }

    public void setV(int v) {
        this.v = v;
    }

    public Wall(int x, int y, int z, int v) {
        this.x = x;
        this.y = y;
        this.z = z;
        this.v = v;
    }
}


public class Fort {

    private int x;
    private int y;
    private int z;
    private int v;

    public int getX() {
        return x;
    }

    public void setX(int x) {
        this.x = x;
    }

    public int getY() {
        return y;
    }

    public void setY(int y) {
        this.y = y;
    }

    public int getZ() {
        return z;
    }

    public void setZ(int z) {
        this.z = z;
    }

    public int getV() {
        return v;
    }

    public void setV(int v) {
        this.v = v;
    }

    public Fort() {
    }

    public Fort(int x, int y, int z, int v) {
        this.x = x;
        this.y = y;
        this.z = z;
        this.v = v;
    }
}

public class main {

    public static void main(String[] args) {
        TerrainBuilder builder=new ComplxBuilder();
        AllBuilder t=builder.buildWall().buildFort().build();
        System.out.println(t.toString());
    }
}