Exception process: whether the cstatement in finally should be executed?

Question

in the Exception process, whether the coding statement in the finally block should be executed, if new Exception be throw again in the catch block ahead of them? like this:
catch(Exception ex){
xxx;
throw new SQLExecption("aaa");
}finally{
close();
I wrroy that the close() should not be executed once I throw new Exception in catch block.
thanks very much

Answer 1

The contents of the finally block are guaranteed to be executed if you throw an exception.
Generally speaking you should release any resources in the finally block that were acquired in the try block, because otherwise they will leak when exceptions occur.
Example:
Connection c = null;
try {
   c = ... // Get a connection
    // Do something with the connection.  
   c.close();
   c = null;
} catch( SQLException e ) {
   logger.log(Level.SEVERE, "Could not foo the bar", e );
} finally {
   try {
      if( c != null ) c.close();
   } catch( SQLException e ) {
      logger.log(Level.WARNING, "Could not close the ostensibly open connection", e );
}