[移动开发]分页代码（注释+代码）

import java.io.Serializable;
import java.util.List;

public class PageUtil<T> implements Serializable {

    private int page;//当前页
    private int pre;//上一页
    private int next;//下一页
    private int totalpage;//尾页
    private int size;//每页多少条
    private Long total;//总记录数
    private List<T> rows;//当前页记录

    //自己实现自己
    public static void main(String[] args) {
        new PageUtil<>();
    }

    //无参构造
    public PageUtil() {
    }

    //有参构造

    public PageUtil(int page, int size, Long total, List<T> rows) {
        this.page = page;

        //三目运算符
        //判断当前页大于1，则当前页-1，否则当前就在第一页
        this.pre = page>1?page-1:1;//上一页
        //判断当前页小于尾页，则当前页+1，否则当前页就在尾页
        this.next = page<this.totalpage?page+1:this.totalpage;//下一页
        //计算总页数（总页数），总记录数%每页条数，如果等于0，则没有余数，不需要再加一页，否则再            
        //加一页，放余出来的记录数
        this.totalpage = (int) (total%size==0?total/size:(total/size+1));
        this.size = size;
        this.total = total;
        this.rows = rows;
    }

    //get/set赋值取值
    public int getPage() {
        return page;
    }

    public void setPage(int page) {
        this.page = page;
    }

    public int getPre() {
        return pre;
    }

    public void setPre(int pre) {
        this.pre = pre;
    }

    public int getNext() {
        return next;
    }

    public void setNext(int next) {
        this.next = next;
    }

    public int getTotalpage() {
        return totalpage;
    }

    public void setTotalpage(int totalpage) {
        this.totalpage = totalpage;
    }

    public int getSize() {
        return size;
    }

    public void setSize(int size) {
        this.size = size;
    }

    public Long getTotal() {
        return total;
    }

    public void setTotal(Long total) {
        this.total = total;
    }

    public List<T> getRows() {
        return rows;
    }

    public void setRows(List<T> rows) {
        this.rows = rows;
    }
}