数据库实训 eclipse与MySQL连接

package com.easy;
import java.util.*;

public class model {
	public static void main(String args[]){
		int x = test();
		System.out.println(x);
	}
	
	@SuppressWarnings("finally")
	public static int test(){
		int a=0;
		try{
			a = 2/0;
			return a;
		}
		catch(Exception e){
			return 1;
		}
		finally{
			return 2;
		}
		
	}
}

打印值为2

package com.easy;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

public class JDBC {
	public static void main(String args[]){
		try {
//			加载驱动
			Class.forName("com.mysql.cj.jdbc.Driver");
			
//			创建连接
			String url="jdbc:mysql://localhost:3306/mysql";
			String user="root";
			String password="root";
			
//			创建执行对象con
			Connection con = DriverManager.getConnection(url, user, password);
			
			Statement sta = con.createStatement();
			
//			定义sql语句
			String sql ="SELECT now() AS time";
			ResultSet rs = sta.executeQuery(sql);
			
//			解析结果集合
			while(rs.next()){
				String time = rs.getString("time");
				System.out.println(time);
			}
			
//抛出两个异常			
		} catch (ClassNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
}