catch Keyword

try {
  tryStatements
} catch (exceptionVar) {
  catchStatements
} finally {
  finallyStatements
}

tryStatements
The statements to be executed.

catchStatements
Statement that is executed if an exception is thrown in the try-block.

exceptionVar Optional
An optional identifier to hold the caught exception for the associated catch block. If the catch block does not utilize the exception's value, you can omit the exceptionVar and its surrounding parentheses, as catch {...}.

finallyStatements
Statements that are executed before control flow exits the try...catch...finally construct. These statements execute regardless of whether an exception was thrown or caught.