User Guide

Statements 219
In the following example, the finally block is used to delete an ActionScript object,
regardless of whether an error occurred. Create a new AS file called Account.as.
class Account {
var balance:Number = 1000;
function getAccountInfo():Number {
return (Math.round(Math.random() * 10) % 2);
}
}
In the same directory as Account.as, create a new AS or FLA document and enter the
following ActionScript in Frame 1 of the Timeline:
import Account;
var account:Account = new Account();
try {
var returnVal = account.getAccountInfo();
if (returnVal != 0) {
throw new Error("Error getting account information.");
}
}
finally {
if (account != null) {
delete account;
}
}
The following example demonstrates a try..catch statement. The code within the try
block is executed. If an exception is thrown by any code within the
try block, control passes
to the
catch block, which shows the error message in a text field using the
Error.toString() method.
In the same directory as Account.as, create a new FLA document and enter the following
ActionScript in Frame 1 of the Timeline:
import Account;
var account:Account = new Account();
try {
var returnVal = account.getAccountInfo();
if (returnVal != 0) {
throw new Error("Error getting account information.");
}
trace("success");
}
catch (e) {
this.createTextField("status_txt", this.getNextHighestDepth(), 0, 0, 100,
22);
status_txt.autoSize = true;
status_txt.text = e.toString();
}