Any reason why PreparedStatement isClosed() hang?

Question

I was debugging some old Java code and it seems it hangs here

PreparedStatement myStatement;

some code.....

try {
    if (!myStatement.isClosed()) {
        myStatement.close();
    }
}

Now, I can't debug this directly in Netbeans, but I can compile a new jar file with log4j statements and it seems to be stuck at the if statement.

Was using ojdbc14-10.2.0.5.0.jar Oracle driver on Oracle 11g DB.

Answer 1

I'm guessing you are calling the close() method in a finalizer. Try using this way:

try {
    myStatement = ...
    ...// execute or fetch...
} finally {
    if(myStatement != null)
        myStatement.close();
}

Calling close() for an already closed statement does nothing so its not a problem. You can always remove the isClosed()