RFR: 8314592: Add shortcut to SymbolLookup::find [v3]

[Maurizio Cimadamore]

On Mon, 15 Apr 2024 13:48:09 GMT, Per Minborg <pminborg at openjdk.org> wrote:

>> While `SymbolLookup` correctly uses an `Optional` return to denote whether a symbol has been found by the lookup or not (which enables composition of symbol lookups), many clients end up just calling `Optional::get`, or `Optional::orElseThrow()` on the result.
>> 
>> This PR proposes to add a convenience method `SymbolLookup::findOrThrow` that will do a lookup and, if no symbol can be found, throws an `IllegalArgumentException` with a relevant exception message.
>
> Per Minborg has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Update src/java.base/share/classes/java/lang/foreign/SymbolLookup.java
>   
>   Co-authored-by: Maurizio Cimadamore <54672762+mcimadamore at users.noreply.github.com>

src/java.base/share/classes/java/lang/foreign/SymbolLookup.java line 152:

> 150: 
> 151:     /**
> 152:      * Returns the address of the symbol with the given name or throws an Exception.

Suggestion:

     * Returns the address of the symbol with the given name or throws an exception.

-------------

PR Review Comment: https://git.openjdk.org/jdk/pull/18474#discussion_r1565837858