Writing Scripts in Nashorn - Scripting in Java: Integrating with Groovy and JavaScript - page 81

catch(identifier) {
// Handle the error here
}

/* A try-finally block */
try {
// Statements that may throw errors
}
finally {
// Perform cleanup work here
}

/* A try-catch-finally block */
try {
// Statements that may throw errors
}
catch(identifier) {
// Handle the error here
}
finally {
// Perform cleanup work here
}

■ in strict mode, it is a SyntaxError to use eval or arguments as the identifier in a
catch block.

Tip

The following is a try block with multiple catch blocks supported as a Nashorn
extension where e is an identifier. You can use any other identifier in place of e :

/* A try block with multiple catch blocks */
try {
// Statements that may throw errors
}
catch (e if e instanceof RangeError) {
// Handle RangeError here
}
catch (e if e instanceof TypeError) {
// Handle TypeError here
}
catch (e) {
// Handle other errors here
}