Closing resultset and statements

Question

Hi!
I just got told that I do not need to close my resultsets and statements in the code, it it enough that the connection are closed. Is this correct?
Eg:
public method myMethod() {
ResultSet rs = null;
Statement sqlStmt = null;
try {
query = "SELECT something";
rs = sqlStmt.executeQuery(query);
if (rs.next())
do something...
// close rs
if (rs != null) {
rs.close();
rs = null;
sqlStmt.close();
sqlStmt = null;
} // end try
catch (errors)...
finally {
if (con != null) {                   <-- Is this line enough to close everything and release connections?
try {
con.close();
catch (exception)...
} // end finally

Answer 1

No, you have to explicitly close the resultset, statement, and connection in order to release resources allocated to each of them. Closing the connection will only relase the connection, not the resultset, and statement.
you could do all of it in the finally as follows:
finally {
     try {
          if (rs != null) {
               rs.close();
          if (stmt != null) {
               stmt.close();
          if (conn != null) {
               conn.close();
     } catch (Exception e) {}
also there is no need to set rs = null, stmt = null after the close()