java 原型模式

应用场景一个类需要创建多个实例

public class Teacher {
    public String educationtime = null;
    public String subject = null;
}

public class School implements Cloneable {
    private String name =null;
    private String address = null;
    private ArrayList<String> style = new ArrayList<>();
    private Teacher teacher = null;

    public School(String name){
        this.name = name;
        teacher = new Teacher();
    }

    public void setSummary(String address, ArrayList<String> style){
        this.address = address;
        this.style = style;
    }

    public void setTeacher(String educationtime,String subject){
        teacher.educationtime = educationtime;
        teacher.subject = subject;
    }

    public School clone() throws CloneNotSupportedException{
        return (School)super.clone();
    }

    public void display(){
        System.out.println(this.name + "  " + this.address);
        for(String st: style){
            System.out.println("学校风格:" + st);
        }

        System.out.println("老师信息:" + teacher.educationtime + "  " + teacher.subject);
    }
}

public class School2 implements Cloneable {
    private String name =null;
    private String address = null;
    private ArrayList<String> style = new ArrayList<>();
    private Teacher teacher = null;

    public School2(String name){
        this.name = name;
        teacher = new Teacher();
    }

    public void setSummary(String address, ArrayList<String> style){
        this.address = address;
        this.style = style;
    }

    public void setTeacher(String educationtime,String subject){
        teacher.educationtime = educationtime;
        teacher.subject = subject;
    }

    public School2 clone(){
        String name = this.name;
        String address = this.address;
        ArrayList<String> style = new ArrayList<>(this.style);

        School2 copy = new School2(this.name);
        copy.setSummary(address,style);
        copy.setTeacher(this.teacher.educationtime,this.teacher.subject);
        return copy;
    }

    public void display(){
        System.out.println(this.name + "  " + this.address);
        for(String st: style){
            System.out.println("学校风格:" + st);
        }

        System.out.println("老师信息:" + teacher.educationtime + "  " + teacher.subject);
    }
}

public class PrototypeDemo {
    public static void main(String[] args) throws CloneNotSupportedException{
        ArrayList<String> style = new ArrayList<>();
        style.add("中原建造风格");
        style.add("西部建造风格");
        System.out.println("-------浅拷贝-------");
        School school = new School("中原大学");
        school.setSummary("河南省中原路1号",style);
        school.setTeacher("八年教学经验","unix内核高级编程");
        //浅拷贝
        School school1 = school.clone();
        school1.setTeacher("两年教学经验","高等数学");

        school.display();
        school1.display();

        System.out.println("-------深拷贝-------");
        School2 school2 = new School2("中原大学");
        school2.setSummary("河南省中原路1号",style);
        school2.setTeacher("八年教学经验","unix内核高级编程");
        //深拷贝
        School2 school3 = school2.clone();
        school3.setTeacher("两年教学经验","高等数学");

        school2.display();
        school3.display();
    }
}