任意一個類通過克隆的方法去得出另一類，原始類叫做原型
1、任意建立一個類，讓這個類去實現一個介面Cloneable,重寫一個方法clone()，此時沒有修改clone裡面，也就是淺拷貝，不會克隆屬性

/**
 * 實現一個介面 Cloneable
 * 重寫一個方法 clone()
 */
public class Video implements Cloneable{
    //設定兩個屬性
    private String name;
    private Date createTime;

    //實現裡面的克隆方法
    @Override
    protected Object clone() throws CloneNotSupportedException {
        return super.clone();
    }

    public Video(){

    }

    public Video(String name, Date createTime) {
        this.name = name;
        this.createTime = createTime;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Date getCreateTime() {
        return createTime;
    }

    public void setCreateTime(Date createTime) {
        this.createTime = createTime;
    }

    @Override
    public String toString() {
        return "Video{" +
                "name='" + name + '\'' +
                ", createTime=" + createTime +
                '}';
    }
}
 

2、深拷貝，修改clone裡面的方法內容，進行屬性的拷貝

/**
 * 實現一個介面 Cloneable
 * 重寫一個方法 clone()
 */
public class Video implements Cloneable{
    //設定兩個屬性
    private String name;
    private Date createTime;

    //實現裡面的克隆方法
    @Override
    protected Object clone() throws CloneNotSupportedException {
        Object obj = super.clone();

        Video video = (Video)obj;
        //將這個物件的屬性也克隆
        this.createTime.clone();

        return obj;
    }

    public Video(){

    }

    public Video(String name, Date createTime) {
        this.name = name;
        this.createTime = createTime;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Date getCreateTime() {
        return createTime;
    }

    public void setCreateTime(Date createTime) {
        this.createTime = createTime;
    }

    @Override
    public String toString() {
        return "Video{" +
                "name='" + name + '\'' +
                ", createTime=" + createTime +
                '}';
    }
}