package JDBC;

import java.sql.Connection;
import java.sql.DriverManager;


import java.sql.ResultSet;

import com.mysql.jdbc.Statement;



public class jdbc {

	private static final String URL ="jdbc:mysql://127.0.0.1:3306/zhao";
	private static final String USER ="root";
	private static final String PASSWORD ="";

	public static void main(String[] args) throws Exception {

		// 加载驱动程序
		Class.forName("com.mysql.jdbc.Driver");
		// 获取数据库连接
		Connection conn = DriverManager.getConnection(URL, USER, PASSWORD);
		// 通过数据库连接操纵数据库。实现增删查改
		Statement stmt=(Statement) conn.createStatement();
		ResultSet rs = stmt
				.executeQuery("select user_name,age from imocc_goddess");

		while (rs.next()) {
			System.out.println(rs.getString("user_name") + ","
					+ rs.getInt("age"));

		}
	}

}

报错说：

Exception in thread "main" java.lang.IncompatibleClassChangeError: Found class com.mysql.jdbc.Statement, but interface was expected

at JDBC.jdbc.main(jdbc.java:25)