在文章之前，简单介绍下设计模式中的分类：
总体来说设计模式分为三大类：
创建型模式，共五种：工厂方法模式、抽象工厂模式、单例模式、建造者模式、原型模式。
结构型模式，共七种：适配器模式、装饰器模式、代理模式、外观模式、桥接模式、组合模式、享元模式。
行为型模式，共十一种：策略模式、模板方法模式、观察者模式、迭代子模式、责任链模式、命令模式、备忘录模式、状态模式、访问者模式、中介者模式、解释器模式。
以上也就是常说的23种设计模式，设计模式还有六大原则：
单一职责原则，里氏替换原则，依赖倒置原则，接口隔壁原则，迪米特法则，开闭原则
建造者模式属于创建型模式，在构建对象完成后返回生成的对象，并且将对象的构建与表示分离。
测试类:
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package com.java.idea.builder;
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/**
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* Created by diy_os on 2016/11/3.
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*/
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public class Person {
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private int id;//身份证
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private int age; //年龄
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private String name; //姓名
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private String address; //住址
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private boolean Marry; //是否结婚
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private String level; //水平
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private Person(Builder builder) { //私有化显示类构造器
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this.age = builder.age;
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this.id = builder.id;
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this.address = builder.address;
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this.level = builder.level;
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this.Marry = builder.Marry;
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this.name = builder.name;
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}
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public int getAge() {
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return age;
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}
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public int getId() {
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return id;
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}
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public String getName() {
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return name;
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}
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public String getAddress() {
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return address;
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}
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public boolean getMarray() {
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return Marry;
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}
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public String getLevel() {
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return level;
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}
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public String toString() {
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return "id=" + id + "\n" +
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"name=" + name + "\n"
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+ "age=" + age + "\n" +
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"address=" + address + "\n" +
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"level=" + level + "\n" +
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"Marrry=" + Marry + "\n";
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}
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public static class Builder {
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private int id;//身份证
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private int age; //年龄
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private String name; //姓名
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private String address; //住址
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private boolean Marry; //是否结婚
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private String level; //水平
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public Builder() {
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}
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public Builder setId(int id) {
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this.id = id;
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return this;
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}
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public Builder setAge(int age) {
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this.age = age;
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return this; //返回当前对象
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}
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public Builder setName(String name) {
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this.name = name;
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return this;
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}
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public Builder setAddress(String address) {
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this.address = address;
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return this;
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}
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public Builder setMarray(boolean marray) {
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this.Marry = marray;
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return this;
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}
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public Builder setLevel(String level) {
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this.level = level;
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return this;
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}
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public Person builder() {
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return new Person(this);
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}
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}
- }
点击(此处)折叠或打开
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package com.java.idea.builder;
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/**
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* Created by diy_os on 2016/11/3.
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*/
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public class Main {
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private String p;
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private String q;
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public Main setP(String p) {
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this.p = p;
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return this;
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}
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public Main setQ(String q) {
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this.q = q;
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return this;
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}
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public String toString() {
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return "p=" + p + "\n" + "q=" + q + "\n";
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}
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public static void main(String[] args) {
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Person person1 = new Person.Builder().setAddress("chongqing").setAge(22).setId(1).setLevel("3").setMarray(false).setName("diy_os").builder();
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System.out.println(person1.getName());
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System.out.print(person1);
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Person person2 = new Person.Builder().setAddress("chongqing").setLevel("3").setMarray(false).setName("diy_os").builder();
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System.out.print(person2);
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Main main = new Main();
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System.out.println(main.setP("p").setQ("q").toString());
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}
- }
来自 “ ITPUB博客 ” ，链接：https://blog.itpub.net/29876893/viewspace-2127630/ ，如需转载，请注明出处，否则将追究法律责任。
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