Can JDBC3.0 code coexist with J2SE 1.4 ?

Question

I am working on a large project that currently is deployed on J2SE 1.3.1.
One class implements java.sql.Connection and, as there are new methods
on the Connection interface in J2SE 1.4, this class
won't compile with 1.4.
I can add the additional methods to MyConnection, but
there is no separate jdbc.jar for jdbc 3.0 which means
I can't execute the modified class with J2SE 1.3.
Am I missing something here?
Is there really no way the same code that implements java.sql.Connection can run in both 1.3 and 1.4?
Peter Booth

Answer 1

The class is a customized connection that works with our own connection pool.
The problem is that to have the class compile with Java 1.4, I need to implement
new methods such as the following. The first method works
fine but the second depends upon the existence of
java.sql.SavePoint - which would require the Java 1.4
JDBC classes.
I am sure I am not the only person encountering this.
Is there any reason why a JDBC 3 jar isn't available
as a separate download?.
public PreparedStatement prepareStatement(String sql, String[] columnNames) throws SQLException
throw new java.lang.UnsupportedOperationException(
"MyConnection: Method prepareStatement(String , String[] ) not implemented yet. \nThis is a Java 1.4 method and we're still using Java 1.3.1 in production");
public void releaseSavepoint(Savepoint savepoint) throws SQLException
{                                                                                      throw new java.lang.UnsupportedOperationException(  "MyConnection: Method releaseSavepoint(Savepoint ) not implemented yet. \nThis is a Java 1.4 method and we're still using Java 1.3.1");                                       
}