DVDBean.java

public class DVDBean implements Comparable<DVDBean> {

    //名称
    private String name;
    //状态
    private Integer state;
    //日期
    private Integer date;
    //次数
    private Integer count;

    public DVDBean() {
    }

    public DVDBean(String name, Integer state, Integer date, Integer count) {
        this.name = name;
        this.state = state;
        this.date = date;
        this.count = count;
    }

    public String getName() {
        return name;
    }

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

    public Integer getState() {
        return state;
    }

    public void setState(Integer state) {
        this.state = state;
    }

    public Integer getDate() {
        return date;
    }

    public void setDate(Integer date) {
        this.date = date;
    }

    public Integer getCount() {
        return count;
    }

    public void setCount(Integer count) {
        this.count = count;
    }

    @Override
    public int compareTo(DVDBean dvdBean) {

        int result = 0;

//        if(this.state> dvdBean.state){
//            result = 1;
//        }else if(this.state< dvdBean.state){
//            result = -1;
//        }else{
//            if(this.count.compareTo(dvdBean.count)>0){
//                result = 1;
//            }
//
//            if(this.count.compareTo(dvdBean.count)<0){
//                result = -1;
//            }
//        }

        /*先比较状态*/
        if(this.state> dvdBean.state){
            result = 1;
        }

        if(this.state< dvdBean.state){
            result = -1;
        }

        /*再比较count*/
        if(this.count.compareTo(dvdBean.count)>0){
            result = 1;
        }

        if(this.count.compareTo(dvdBean.count)<0){
            result = -1;
        }



        return result;
    }
}