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Kotlin nullable string9/26/2023 ![]() ![]() We have the isEmpty() method from String class that we can use to check if String is empty, but we still need to perform the null check first, to avoid NullPointerException if we call the method on a null String.įor a complete tutorial on how to handle exceptions in Java, you can check out Exception Handling in Java. If either of these conditions is true, the code prints “str is null or empty!” If neither of these conditions are true, the code prints “str is not null or empty! Using the isEmpty() method from String class An if-else statement is used to check if the String is null or if its length is equal to 0, which would indicate that it is an empty String. 1 Answer Sorted by: 8 There is no way for the compiler to prove that after isNullOrBlank evaluates to false, that the argument must not be null. In this example, we check if a given String is null or empty and then we print the appropriate message. ![]() User Registration, Log in, Log out – Video Tutorials. ![]()
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