TO connect multiple database

Connect to database using user input

import java.sql.*;
import java.util.*;
class  ConnectToDatabase
{
    public static void main(String[] args) 
    {
        Scanner input=new Scanner(System.in);
        System.out.print("Enter database: ");
        String db=input.next();
        try{
           Class.forName("com.mysql.jdbc.Driver");
           Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/"+db, "root", "root");
           Statement st=con.createStatement();
           System.out.print("Enter table name: ");
           String table=input.next();
           ResultSet rs=st.executeQuery("select * from "+table);

           while(rs.next()){
               System.out.println(rs.getString(1)+" "+rs.getString(2));
           }
        }
        catch(Exception e){}
        }
}