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.
In this example, we check if a given String is null or empty and then we print the appropriate message.
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