13th Builder Model

The builder pattern is when the algorithm that creates the complex object should be independent of the part of the object and the mode in which they are assembled.

Importjava.util.LinkedList;Importjava.util.List;/*** Created by Hero on 16-4-3.*/ Public classProduct {Privatelist<string> parts =NewLinkedlist<>();  Public voidAdd (String part) {Parts.add (part); }     Public voidShow () { for(String p:parts) {System.out.print (P+ "\ T");    } System.out.println (); }}/*** Created by Hero on 16-4-3.*/ Public Abstract classBuilder { Public Abstract voidBuildparta ();  Public Abstract voidBUILDPARTB ();  Public AbstractProduct GetResult ();}/*** Created by Hero on 16-4-3.*/ Public classConcreteBuilder1extendsBuilder {PrivateProduct Product =NewProduct (); @Override Public voidBuildparta () {Product.add (A); } @Override Public voidBUILDPARTB () {Product.add ("B"); } @Override PublicProduct GetResult () {returnproduct; }}/*** Created by Hero on 16-4-3.*/ Public classConcreteBuilder2extendsBuilder {PrivateProduct Product =NewProduct (); @Override Public voidBuildparta () {Product.add ("X"); } @Override Public voidBUILDPARTB () {Product.add ("Y"); } @Override PublicProduct GetResult () {returnproduct; }}/*** Created by Hero on 16-4-3.*/ Public classDirector { Public voidConstruct (Builder builder) {Builder.buildparta ();    BUILDER.BUILDPARTB (); }} Public classMain { Public Static voidMain (string[] args) {Director Director=NewDirector (); ConcreteBuilder1 ConcreteBuilder1=NewConcreteBuilder1 (); ConcreteBuilder2 ConcreteBuilder2=NewConcreteBuilder2 (); Product Product=NULL; Director.        Construct (ConcreteBuilder1); Product=Concretebuilder1.getresult ();        Product.show (); Director.        Construct (CONCRETEBUILDER2); Product=Concretebuilder2.getresult ();    Product.show (); }}

13th Builder Model