cant get Java code to work

[vb_student]

Hello

My JDBCDemo class code is

public class JDBCDemo {
   Connection db_connection;
   Statement db_statement;
   ResultSet result;
}

and it is not importing the required libraries which define Connection, Statement, Resultset.

I guess these are all javaclasses, if they are, is there any way to find which libraries they are located in, so that i may add the required libraries? is there any way i can add the rt.jar to JDBCDemo.java, or is that not possible

i tried to compile JDBCDemo.java and it came up with the following
C:\JDBCApp>javac JDBCDemo.java
JDBCDemo.java:2: cannot resolve symbol
symbol : class Connection
location: class JDBCDemo
Connection db_connection;
^
JDBCDemo.java:3: cannot resolve symbol
symbol : class Statement
location: class JDBCDemo
Statement db_statement;
^
JDBCDemo.java:4: cannot resolve symbol
symbol : class ResultSet
location: class JDBCDemo
ResultSet result;
^
3 errors

C:\JDBCApp>