一、最低级分页
resources下的db.properties
db.driver=com.mysql.cj.jdbc.Driver
db.url=jdbc:mysql://localhost:3305/db
db.user=root
db.password=
db.pageSize=3
Demo2.java
```
package cn.zcx;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;