Java修仙之基础功法篇-＞构建者模式

构建者模式调用过程（原理）详解及案例

public class Test {
    public static void main(String[] args) {
        //备注：请直接使用@Biuder不要犯傻
        Course course = new CourseBuilder()
                .addName("设计模式")
                .addPPT("【PPT课件】")
                .addVideo("【回放视频】")
                .addNote("【课堂笔记】")
                .addHomework("【课后作业】")
                .build();
 
        System.out.println(course);
    }
}

public class CourseBuilder {
    private Course course = new Course();
 
    public CourseBuilder addName(String name) {
        course.setName(name);
        return this;
    }
 
    public CourseBuilder addPPT(String ppt) {
        course.setPpt(ppt);
        return this;
    }
 
    public CourseBuilder addVideo(String video) {
        course.setVideo(video);
        return this;
    }
 
    public CourseBuilder addNote(String note) {
        course.setNote(note);
        return this;
    }
 
    public CourseBuilder addHomework(String homework) {
        course.setHomework(homework);
        return this;
    }
 
    public Course build() {
        return this.course;
    }
}

@Data
@NoArgsConstructor
@AllArgsConstructor
public class Course {
 
    private String name;
    private String ppt;
    private String video;
    private String note;
 
    private String homework;
 
    @Override
    public String toString() {
        return "CourseBuilder{" +
                "name='" + name + '\'' +
                ", ppt='" + ppt + '\'' +
                ", video='" + video + '\'' +
                ", note='" + note + '\'' +
                ", homework='" + homework + '\'' +
                '}';
    }
}

构建者组成部分

备注：@biuder注解 = 构建者模式（请合理利用注解）