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Alex Rivera
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I was reading an InfoWorld article , and came across this little tidbit: Take the latest version of Java, which tries to make null-pointer checking easier by offering shorthand syntax for the endless pointer testing. Just adding a question mark to each method invocation automatically includes a test for null pointers, replacing a rat's nest of if-then statements, such as: public String getPostcode(Person person) { String ans = null; if (person != null) { Name nm = person.getName(); if (nm != null) { ans = nm.getPostcode(); } } return ans; } With this: public String getFirstName(Person person) { return person?.getName()?.getGivenName(); } I've scoured the internet and got nothing. So, my question: is there any official documentation on this? Or, is this just a use of the ternary operator that I've never seen before? I found that C# has a similar operator, the ?? operator, but I'd like to get the documentation for the language I'm working in.
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